To see the other types of publications on this topic, follow the link: Mandibular condyle Mandible.
Journal articles on the topic 'Mandibular condyle Mandible'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Mandibular condyle Mandible.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Xiao, Fang, Hidetaka Hayashi, Tadashi Fujita, Maya Shirakura, Yuji Tsuka, Eri Fujii, Kazuo Tanne, and Kotaro Tanimoto. "Role of articular disc in cartilaginous growth of the mandible in rats." APOS Trends in Orthodontics 7 (February 1, 2017): 29–34. http://dx.doi.org/10.4103/2321-1407.199176.
Full textAbstract:
Displacement of the temporomandibular joint (TMJ) disc causes a lateral shift of the mandible and less-developed and/or distally located mandible unilaterally and bilaterally, respectively, if occurred in growing individuals. The purpose of this study was to evaluate mandibular condylar growth in growing rats after TMJ discectomy and to explore a certain significant role of articular disc in the TMJ in mandibular or cartilaginous growth. Eighteen 4-week-old Wistar strain male rats were divided into two groups with nine in each group, i.e., rats with TMJ discectomy (discectomy group) and only sham operation (control group). Four weeks after initiating the experiment, morphometric analyses of the mandible were performed using a rat and mouse cephalometer and micro-computed tomography. Then, the mandibular condyles were subjected to histomorphometric analyses. Condylar and mandibular growth was reduced significantly in the discectomy group than in the control group. In the discectomy group, the condyle also became flatter and smaller. In addition, the 4-layer structure of condylar cartilage was unclear with thicker fibrous and thinner lower hypertrophic layers in the discectomy group when compared to the controls. It is shown that resection of the articular disc substantially affects condylar and mandibular growth in terms of the cartilaginous growth, suggesting that TMJ disc is indispensable for maintaining normal growth of the condyle and mandible, leading to optimal development of the TMJ and the entire mandible.
2
Liu, Chang, Sawa Kaneko, and Kunimichi Soma. "Effects of a Mandibular Lateral Shift on the Condyle and Mandibular Bone in Growing Rats." Angle Orthodontist 77, no. 5 (September 1, 2007): 787–93. http://dx.doi.org/10.2319/091806-377.
Full textAbstract:
Abstract Objective: To examine the effects of mandibular lateral shift on the growth and morphology of the condyle and mandibular bone in growing rats. Materials and Methods: A maxillary resin plate was designed to displace 4-week-old rat mandibles 2 mm to the left during closure. The plate was cemented, and the rats were killed after 2, 4, 8, or 12 weeks. Gross dimensions of the condylar head were measured. Radiographic films of the mandibles were exposed, and selected measurements were made. The newly formed bone in the condyle was evaluated with periodic acid and Schiff's reagent (PAS) staining. Results: The length of the condylar head was greater on the ipsilateral side compared with the contralateral side. The experimental rats developed an asymmetric mandible, shorter in horizontal dimension but longer in the vertical dimension on the ipsilateral side. The mandibular growth direction was also affected, with the mandible on the ipsilateral side growing in a more anterior and superior direction. The amount of newly formed bone was greater in the superior subchondral region but lower in the posterior subchondral region on the ipsilateral side compared with the contralateral side. Conclusions: Mechanical stimuli delivered by a functional shift produce a series of morphological and histological responses in the condyle and lead to condylar and mandibular asymmetry in rats.
3
Zarasade, Lobredia, Iswinarno Doso Saputro, and Nadia Tamara Putri. "Mandibular Condyle Fracture Management Outcome in Department of Plastic Reconstructive and Aesthetic Surgery, Dr. Soetomo Hospital on Period 2015- 2018." Jurnal Rekonstruksi dan Estetik 5, no. 1 (January 6, 2021): 35. http://dx.doi.org/10.20473/jre.v5i1.24323.
Full textAbstract:
Background : The high incidence of condyle mandible fractures is due to the role of the mandibular ramus which has stronger resistance compared to head condyle mandibular. The management of condyle fractures is still controversial because of the prognosis. Management of condyle fractures of the mandible should aim at maximally reducing morbidity, postoperative complications, and aesthetic and / or functional impairment.Methods: The medical records of 56 patients with condyle mandible fractures who presented at the Dr. Soetomo Hospital Surabaya from January 2015 to December 2018 were reviewed retrospectively. We analyzed characteristics of the patients (age), type of fractures, management of fractures, and outcome from management.Results : This study shows that a total of 56 patients, 22 were patients with mandibular condyle fractures only and 34 patients with mandibular condyle fractures with other maxillofacial fractures. The studied showed that male patients (84%) is more than female patients (16%). The mean age of the patients involved in this study was 28.25 ± 1.78 years, with the youngest being 12 years old and the oldest being 67 years old. The results of the overall study with good occlusion results in 48 patients, it was found that 22 patients were treated with closed reduction and 26 patients with open reduction were performed.Conclusions: The results of condyle mandibula fracture management in Dr. Soetomo Hospital has been according to the indication with the treatment indication along with the result of good management.
4
Oksayan, Ridvan, Oral Sokucu, and Neslihan Ucuncu. "Effects of bite-jumping appliances on mandibular advancement in growing rats: A radiographic study." European Journal of Dentistry 08, no. 03 (July 2014): 291–95. http://dx.doi.org/10.4103/1305-7456.137624.
Full textAbstract:
ABSTRACT Objective: The aim was to evaluate the effects of the use of mandibular advancement appliances on mandibular growth in growing rats. Materials and Methods: Twenty-four 8-week-old male Wistar albino rats were randomly divided into two experimental groups (12 rats each): Group I was a control group, and Group II was the mandibular advancement appliance group. A functional bite-jumping appliance was used in Group II to promote mandibular advancement. Anatomical changes in the condyle and mandible were evaluated by comparing radiographic results from before and after the study, with angular and linear measurements. Friedman and Mann-Whitney U-tests were used in statistical analysis. Results: According to the radiographic results, the growth of mandibles and condyles in Group II was significantly greater than with the length of the condylar process (A-B) and distance from condyle to menton (A-D) variables (P < 0.05). In addition, Group I showed greater mandibular base growth than did Group II (P < 0.05). Conclusions: We conclude that the use of an intraoral bite-jumping appliance can stimulate condylar growth and increase sagittal mandibular advancement in growing rats.
5
Mehra, Anhad, Venkatesh Anehosur, and Niranjan Kumar. "Impacted Mandibular Third Molars and Their Influence on Mandibular Angle and Condyle Fractures." Craniomaxillofacial Trauma & Reconstruction 12, no. 4 (December 2019): 291–300. http://dx.doi.org/10.1055/s-0039-1685459.
Full textAbstract:
The aim of this study is to retrospectively analyze the effect unerupted or partially erupted third molars have on the angle and condyle fracture patterns of the mandible. It also focuses on evaluating the type of impaction that causes angle fracture and the level at which the condyle most commonly fractures. The study involves all the patients who had undergone treatment for condylar and angle of the mandible fractures from 2010 to 2017 in our craniofacial center. The case records and orthopantomograms of each patient were taken into consideration and a correlation was established based on gender, age, etiology, presence of third molars, position of third molars, angulation, and root development of third molars. Of the 150 angle fracture patients, 146 had third molars and 4 did not, whereas of the 130 condyle fractures, third molar was present in 54 patients and absent in 76. The prevalence of angle fractures was statistically significant when a third molar was present, whereas the prevalence of condyle fractures was higher when third molar was absent. The results of age, etiology, angulation, position, and root development of third molars were also statistically significant. However, sex of the patient did not influence the fracture pattern. The presence of an impacted third molar or a completely erupted one has a definite influence on the fracture pattern of the mandible. The occurrence of angle and condyle fractures was mostly affected by the continuity of the cortical bone at the angle of the mandible. Hence, prophylactic removal of mandibular third molars does increase the risk of condyle fractures.
6
Singh, Virendra, Pranav Gupta, Shruti Khatana, and Amrish Bhagol. "Superolateral Dislocation of Bilateral Intact Condyles—An Unusual Presentation: Report of a Case and Review of Literature." Craniomaxillofacial Trauma & Reconstruction 6, no. 3 (September 2013): 205–10. http://dx.doi.org/10.1055/s-0033-1343780.
Full textAbstract:
Dislocation of the mandibular condyle is the clinical condition of the condyle head being displaced out of the glenoid fossa but still remaining within the joint capsule. However, the anatomy of the mandibular condyle, glenoid fossa, and zygomatic arch usually prevent the dislocation of intact condyles out of the glenoid fossa whenever the mandible is subjected to high impact. Complete dislocation of the mandibular condyle from the glenoid fossa can be classified into four groups: anterior, posterior, lateral, and superior dislocation. All the groups except anterior dislocation are rare. Superolateral dislocation of the intact mandibular condyle occurs very rarely. We report a case of lateral dislocation of bilateral intact condyles associated with left parasymphysis fracture. The purpose of this report is to review all of the available English literature on this dislocation and discuss the possible causative mechanism and diagnostic features, as well as clinical management.
7
Rahim, Ashfaq ur, Sadiq Ali, Muhammad Nauman, Tannaza Qayyum, Abdullah Khan, Mohammad Abdullah Khan, and Zahid Iqbal. "Comparison of Preauricular Approach Versus Retromandibular Approach in Management of Condylar Fractures." Pakistan Journal of Medical and Health Sciences 15, no. 8 (August 26, 2021): 2137–40. http://dx.doi.org/10.53350/pjmhs211582137.
Full textAbstract:
Objectives: Surgical treatment of patients with multiple mandibular fractures involving condylar segments may be a difficult proposition for a maxillofacial surgeon. These fractures can be double or triple fractures of the lower mandible and can also be associated with other fractures of the face. While many authors have suggested that the conventional approach to reducing and stabilizing a mandibular symphysis / para-symphysis fracture is appropriate before addressing a fractured condyle, there is another school of thought that suggests that the condylar segment should be reduced and repaired first. This article aims to review the results of operations where the reduction and fixation of a fractured condyle is performed prior to other associated mandible fractures, and to explore the effectiveness of various surgical methods including preauricular and retromandibular proposed in this case. Place and Duration: In the Oral and Maxillofacial surgery department of Faryal Dental College, Lahore for two-years duration from Jan 2018 to Jan 2020. Material and methods: The study included 60 surgically treated patients with multiple mandible fractures (double / triple), including the condyle component. For treatment of the fractured condylar segments, the preauricular and retromandibular (anterior parotid-transmasseteric) approach was used. Results: Condyle fracture was the first segment to be managed during sequencing of surgical treatment, regardless of the method used. First, good reduction and stabilization have been achieved with limited complications in treating a condyle fracture. Conclusion: While it is the surgeon's prerogative to sort multiple mandible fractures, addressing the condylar segment first provides the operator with a viable alternative to the conventional technique. Key words: condylar fractures, multiple mandibular fractures, preauricular approach, retromandibular approach
8
Mishra, Madan, and Gaurav Singh. "A Rare Case Report of an Unusual Dislocation of Fractured Mandibular Condyle." Craniomaxillofacial Trauma & Reconstruction 9, no. 2 (June 2016): 166–69. http://dx.doi.org/10.1055/s-0035-1566161.
Full textAbstract:
Several cases have been reported regarding superolateral, posterior, or superior dislocation of mandibular condyle. The anteromedial dislocation of fractured condyle is the most common among all. This article reports an unusual and unique case of dislocated fractured mandibular condyle wherein the fractured left condylar head was dislocated to the left anatomic angle of mandible. We have not found a single such case in the world English literature published till date. The presented case falls in the rarest of the rare category that will add to our previous knowledge about the types and extent of fracture dislocation of mandibular condyle.
9
Kim, Seong Ryoung, Sam Jang, Kang-Min Ahn, and Jee-Ho Lee. "Evaluation of Effective Condyle Positioning Assisted by 3D Surgical Guide in Mandibular Reconstruction Using Osteocutaneous Free Flap." Materials 13, no. 10 (May 19, 2020): 2333. http://dx.doi.org/10.3390/ma13102333.
Full textAbstract:
In the present study, the reproducibility and postoperative stability of a 3D printed surgical guide were evaluated in mandibular reconstruction with an osteocutaneous free flap (OCFF), including a fibular free flap (FFF) and deep circumflex iliac artery free flap (DCIA). Fifteen patients were enrolled, and a 3D surgical guide was fabricated by simulation surgery using preoperative (T0) Computed tomography (CT) images. Mandibular reconstruction was performed with OCFF using the 3D surgical guide. Postoperative CTs were taken immediately, 1 week (T1), and 6 months (T2) after surgery, to evaluate the reproducibility of the 3D surgical guide and condyle stability. Error of the 3D surgical guide ranged from 0.85 to 2.56 mm. There were no differences in reproducibility according to flap type. Condylar error and error at mandible midpoint were significantly different in FFF. However, there was no difference in DCIA error between the condyle and mandible midpoint. Regarding condyle stability 6 months after surgery, condyles moved more than 2 mm (up to 2.85 mm) in FFF, whereas there were no significant movement in DCIA. Careful intraoperative flap fixation and closed postoperative observation should be considered for stable clinical outcome, especially in the case of FFF.
10
Rodrigues, Lucimar, Luciana Corrêa, and João Gualberto de Cerqueira Luz. "Effects of the condylar process fracture on facial symmetry in rats submitted to protein undernutrition." Acta Cirurgica Brasileira 26, no. 2 (April 2011): 88–93. http://dx.doi.org/10.1590/s0102-86502011000200003.
Full textAbstract:
PURPOSE: To investigate the facial symmetry of rats submitted to experimental mandibular condyle fracture and with protein undernutrition (8% of protein) by means of cephalometric measurements. METHODS: Forty-five adult Wistar rats were distributed in three groups: fracture group, submitted to condylar fracture with no changes in diet; undernourished fracture group, submitted to hypoproteic diet and condylar fracture; undernourished group, kept until the end of experiment, without condylar fracture. Displaced fractures of the right condyle were induced under general anesthesia. The specimens were submitted to axial radiographic incidence, and cephalometric mensurations were made using a computer system. The values obtained were subjected to statistical analyses among the groups and between the sides in each group. RESULTS: There was significative decrease of the values of serum proteins and albumin in the undernourished fracture group. There was deviation of the median line of the mandible relative to the median line of the maxilla, significative to undernutrition fracture group, as well as asymmetry of the maxilla and mandible, in special in the final period of experiment. CONCLUSION: The mandibular condyle fracture in rats with proteic undernutrition induced an asymmetry of the mandible, also leading to consequences in the maxilla.
11
Suhas, S., Sharad Ramdas, P. P. Lingam, H. R. Naveen Kumar, Aashish Sasidharan, and R. Aadithya. "Assessment of temporomandibular joint dysfunction in condylar fracture of the mandible using the Helkimo index." Indian Journal of Plastic Surgery 50, no. 02 (May 2017): 207–12. http://dx.doi.org/10.4103/ijps.ijps_125_16.
Full textAbstract:
ABSTRACT Introduction: Condylar fractures of the mandible are functionally important fractures as the condyle of the mandible being a part of the temporomandibular joint (TMJ) and can lead to TMJ dysfunction if not properly treated. Materials and Methods: This was a cross-sectional study of a total of 33 treated patients with fracture of the mandibular condyle who underwent examination as per the Helkimo index. Their dysfunction was quantified and clinicoepidemiological characteristics were assessed. It was found that majority of our patients were young males involved in a two-wheeler accident. All patients underwent intermaxillary fixation as the minimum treatment and 30% underwent open reduction and internal fixation in addition. Results: There was no statistically significant association between the degree of clinical dysfunction and factors such as age, mechanism of injury, type of condyle fracture, presence of other mandible fractures, and surgical procedure. However, dislocation of the mandibular condyle was found to be a negative prognostic factor and all these patients had some degree of dysfunction. Conclusion: The overall prevalence of TMJ dysfunction according to the Helkimo index was 90%. About 61% of patients had mild dysfunction (Di1) and 30% had moderate dysfunction (Di2). None of the patients had severe dysfunction. To conclude, the Helkimo index is a simple, effective, inexpensive, reliable screening index to assess TMJ dysfunction in condylar fractures of mandible.
12
Choi, Sooji, JeongKeun Lee, SeungIl Song, and Seunghye Kim. "Retrospective Study of the Mandibular Condyle Fracture in Children and Young Adolescents." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 47, no. 1 (February 29, 2020): 1–8. http://dx.doi.org/10.5933/jkapd.2020.47.1.1.
Full textAbstract:
The aim of this retrospective study was to investigate etiology, clinical features, and treatment modalities of the mandibular condyle fracture in children and young adolescents. This study was conducted based on medical records and radiographic examinations of 44 pediatric patients. Patients received treatment under diagnosis of mandibular condylar fracture. They were divided into 4 groups according to their age. The involvement of condyle in the mandible fracture occurred in higher percentage in younger age groups. Falling was the most common etiologic factor in all age group, especially in children with age under 7. Condyle head was the most frequent site of fracture in age group of 4-7 whereas fracture tends to occur in lower condylar areas in older groups. In 54.5% of the mandibular condyle fracture, symphysis fracture was accompanied. Teeth injury occurred in higher incidency when condyle fracture accompanied symphysis fracture. Conservative treatments were applied to 43 out of 44 patients.
13
Md Anisuzzaman, Mostafa, Safiquer Rahman Khan, Mohammad Tariqul Islam Khan, Md Kamal Abdullah, and Alia Afrin. "Evaluation of Mandibular Condylar Morphology By Orthopantomogram In Bangladeshi Population." Update Dental College Journal 9, no. 1 (April 27, 2019): 29–31. http://dx.doi.org/10.3329/updcj.v9i1.41203.
Full textAbstract:
Background: Orthopantomograph (OPG) is one of the most common radiograph use by dental surgeon for evaluate information about teeth, Maxilla, Mandible and other bony structure. It is also available, low price and low doses of radiation. Mandibular condyle is most important landmarks of mandible, which is changes due to ageing process, developmental abnormalities, distinct diseases, trauma, endocrine shock, radio therapy etc. Panoramic radiographs remain the best screening modality for temporomandibular joint abnormalities today. Objectives: The aims at objective of observing and documentation of shapes of condyle on an orthopantomogram, which were very important for treatment of patient in different branch of dentistry specially in oral and maxillofacial surgery.
Materials and Methods: This study composed radiographic evaluation of 500 condylar heads after imaging 250 digitalized OPGs taken for analysis. Then evaluate the mandibular condylar shape in 2D dimensional view (OPG).
Results: In our study, an attempt to common prevalent radiographic shapes of the condylar head on the OPG. 200 pairs of condylar heads were evaluated. Out of them 60% were oval in shape, followed by bird beak (29%), diamond (9%) and least being crooked finger (2%). Oval-oval was commonly occurring mix (67%), whereas crooked/ crooked finger was a rarity.
Conclusion: Due to low radiation exposer and availability, OPG is common chose of dentist for primary evaluate the tooth, mandible and facial skeleton. Shapes of the mandibular condyle also evaluate by OPG which showing ovaloval being most accepted in both genders.
Update Dent. Coll. j: 2019; 9 (1): 29-31
14
Lyros, Ioannis, Miltiadis A. Makrygiannakis, Theodoros Lykogeorgos, Efstratios Ferdianakis, and Apostolos I. Tsolakis. "Posterior Mandibular Displacement—A Systematic Review Based on Animal Studies." Animals 11, no. 3 (March 15, 2021): 823. http://dx.doi.org/10.3390/ani11030823.
Full textAbstract:
Treating extreme mandibular growth is challenging. The mandible is pushed backwards to address itsprotrusion. Nevertheless, conclusions after such displacement in animals have been contradictory. The aim of the present review is to present measurable alterations of the mandible and the condyle following retractionin healthy rats or rabbits. PubMed, Scopus and Web of Science were accessed for relevant studies up to October 2020. Eligibility was determined by the PICOS process, while the risk of bias was estimated with SYRCLE’s risk of bias tool. Retraction resulted in a more distal molar occlusion and the condyle rested more posteriorly. Mandibular anteroposterior bilateral growth restriction was achieved, the condylar process measured smaller and its angulation increased. The condylar neck thickened, its posterior surface flattened, the coronoid process was measured longer, and enlarged retromolar density was registered. Differences in the ramus height and the intercondylar distance were insignificant. Changes persisted for the period of study and subsequently the mandible resumed its inherited growth pattern. The timing of mandibular shaping and TMJ outcomes might depend on the properties of the applied force. Stability is of concern and well-structured, long-term studies are expected to resolve the issue and further clarify the results of posterior mandibular displacement.
15
Zhang, Min, Takahiro Ono, Yongjin Chen, Xin Lv, Shun Wu, Hong Song, Ruini Zhao, and Yibing Wang. "Effects of Condylar Elastic Properties to Temporomandibular Joint Stress." Journal of Biomedicine and Biotechnology 2009 (2009): 1–7. http://dx.doi.org/10.1155/2009/509848.
Full textAbstract:
Mandibular condyle plays an important role in the growth and reconstruction of the temporomandibular joint (TMJ). We aimed to obtain orthotropic elastic parameters of the condyle using a continuous-wave ultrasonic technique and to observe the effects of condylar elastic parameters on stress distribution of the TMJ using finite element analysis (FEA). Using the ultrasonic technique, all nine elastic parameters were obtained, which showed that the mandibular condyle was orthotropic. With the condyle defined as orthotropic, the occlusal stress was transferred fluently and uniformly from the mandible to the TMJ. The stress distribution in the isotropic model showed stepped variation among different anatomical structures with higher stress values in the cartilage and condyle than in the orthotropic model. We conclude that anisotropy has subtle yet significant effects on stress distribution of the TMJ and could improve the reality of simulations.
16
Sá, Milena Peixoto Nogueira de, Jacqueline Nelisis Zanoni, Carlos Luiz Fernandes de Salles, Fabrício Dias de Souza, Uhana Seifert Guimarães Suga, and Raquel Sano Suga Terada. "Morphometric evaluation of condylar cartilage of growing rats in response to mandibular retractive forces." Dental Press Journal of Orthodontics 18, no. 4 (August 2013): 113–19. http://dx.doi.org/10.1590/s2176-94512013000400016.
Full textAbstract:
INTRODUCTION: The mandibular condylar surface is made up of four layers, i.e., an external layer composed of dense connective tissue, followed by a layer of undifferentiated cells, hyaline cartilage and bone. Few studies have demonstrated the behavior of the condylar cartilage when the mandible is positioned posteriorly, as in treatments for correcting functional Class III malocclusion. OBJECTIVE: The aim of this study was to assess the morphologic and histological aspects of rat condyles in response to posterior positioning of the mandible. METHODS: Thirty five-week-old male Wistar rats were selected and randomly divided into two groups: A control group (C) and an experimental group (E) which received devices for inducing mandibular retrusion. The animals were euthanized at time intervals of 7, 21 and 30 days after the experiment had began. For histological analysis, total condylar thickness was measured, including the proliferative, hyaline and hypertrophic layers, as well as each layer separately, totaling 30 measurements for each parameter of each animal. RESULTS: The greatest difference in cartilage thickness was observed in 21 days, although different levels were observed in the other periods. Group E showed an increase of 39.46% in the total layer, reflected by increases in the thickness of the hypertrophic (42.24%), hyaline (46.92%) and proliferative (17.70%) layers. CONCLUSIONS: Posteriorly repositioning the mandible produced a series of histological and morphological responses in the condyle, suggesting condylar and mandibular adaptation in rats.
17
TSOLAKIS, I. A., C. VERIKOKOS, D. PERREA, E. BITSANIS, and A. I. TSOLAKIS. "Effects of diet consistency on mandibular growth. A review." Journal of the Hellenic Veterinary Medical Society 70, no. 3 (October 30, 2019): 1603. http://dx.doi.org/10.12681/jhvms.21782.
Full textAbstract:
This article is a review that focuses on the diet consistency and how this affects mandibular morphology. Various published studies focused on the relationship between mastication and growth of the mandible because it is considered that mandibular growth is dependent on the loads exerted by the function of the masticatory muscles. Moreover it has been pointed out that the increase of orthodontic anomalies is due to the modern softer diet. Even in rats, soft diet is one of the factors causing malocclusions. All of the studies have been experimental, mainly in rodents, since this research is impossible to be applied on humans in a short period of time. Most experimental studies suggested that occlusal loading affects bone mass, bone amount, bone density, the length and the width of the bone, the degree of mineralization, the genetic expression, the collagen immunoreaction and the chondrocytes action on the cartilage. It is stated that bone volumes and thickness of the mandible of rats fed with soft diet were smaller when compared to animals fed with hard diet. Also the mandibles and condyles were smaller and less dense in the rats of soft diet as compared to controls. Furthermore the length and the width of the condyle in the soft diet group of animals were smaller as compared to the condyle of the hard diet group of animals. Soft diets affect also the degree of mineralization, and the action of the chondrocytes on the cartilage.
18
SOUZA, Denis Pimenta e., José Luiz Cintra JUNQUEIRA, and Ricardo RAITZ. "Mandible condyle osteochondroma: clinical case report." RGO - Revista Gaúcha de Odontologia 65, no. 4 (December 2017): 371–75. http://dx.doi.org/10.1590/1981-863720170002000133542.
Full textAbstract:
ABSTRACT Osteochondroma is one of the most common benign bone tumours. However, it a rare in the mandibular condyle. Depending on the symptoms and duration of the osteochondroma, the management ranges from excision of the tumor alone to condylectomy along with tumor excision. This paper presents a case of Osteochondroma after surgical treatment affecting the mandible of a 39-year-old man and highlights the diagnosis, surgical procedures and 3-year follow-up period. At the clinical examination, the patient presented severe mandibular lateral deviation to the right, left side disocclusion with a slight oral opening limitation, dental abrasion compatible with bruxism and class III. After 3-year follow-up 3 years later revealed that the surgical management posed was successful for Osteochondroma and the patient is currently under regular review.
19
Zieliński, Rafał, Marcin Kozakiewicz, Bartłomiej Konieczny, Michał Krasowski, and Jakub Okulski. "Mechanical Evaluation of Titanium Plates for Osteoesynthesis High Neck Condylar Fracture of Mandible." Materials 13, no. 3 (January 27, 2020): 592. http://dx.doi.org/10.3390/ma13030592.
Full textAbstract:
Background: In the literature no information about plates for the high-neck mandibular condylar osteosynthesis could be found despite that 30 plate designs have been published. The main course consider the basal condylar or diacapitular fractures. The aim of the study was to test mechanically all available designs (only 4 of 30 was proper) on polyurethane mandibles using an individually designed clamping system. Methods: Forces required for a 1 mm displacement of fixed fracture fragments and incidents of screw loosening were recorded. Results: It has occured that dedicated plates for fixation are much weaker than set of two straight plates (p < 0.0001). General observation is the bigger plate and more screws, the better rigid stable osteosynthesis of mandibular condyle, however, there are limitations in plates design for high-neck fractures resulted in restricted operation field. Conclusion: Double straight plates occured to be the best mechanical fixation for high-neck fractures of the mandibular condyle. Maybe other existing plates could be used but only after prebending or that fracture required novel dedicated plates design.
20
Kawakami, Masayoshi, Kazuhiko Yamamoto, Tomohiro Inoue, Atsuhisa Kajihara, Masaki Fujimoto, and Tadaaki Kirita. "Disk Position and Temporomandibular Joint Structure Associated with Mandibular Setback in Mandibular Asymmetry Patients." Angle Orthodontist 79, no. 3 (May 1, 2009): 521–27. http://dx.doi.org/10.2319/040708-199.1.
Full textAbstract:
Abstract Objective: To determine the changes in articular disk position and the temporomandibular joint (TMJ) structure in patients who had an asymmetric setback of the mandible performed by a bilateral sagittal split ramus osteotomy with manual positioning of the condyle. Materials and Methods: Twenty-two patients with skeletal Class III malocclusion being treated at Nara Medical University Hospital were evaluated using clinical examination and pre- and postoperative magnetic resonance images of their TMJs. Results: Changes in articular disk position after asymmetric setback surgery were not statistically significant, although a tendency of anterior displacement in the fossa was noted. The anterior and posterior joint spaces did not show significant changes, whereas the condyle head of the deviated or contralateral side tended to be positioned downward. Conclusion: The asymmetric setback of the mandible with intraoperative manual positioning of the condyle does not significantly change the disk position in the fossa.
21
Sasaki, Ryo, Noriko Sangu Miyamoto, Kohei Tominaga, and Toshihiro Okamoto. "Refracture of the Mandibular Condyle in Epilepsy." Craniomaxillofacial Trauma & Reconstruction Open 5 (January 1, 2020): 247275122097809. http://dx.doi.org/10.1177/2472751220978091.
Full textAbstract:
Refracture of the mandible following stable internal fixation would be rare. A 28-years-old male patient was transferred to our emergency center due to fall caused by epilepsy seizure. Computed tomography (CT) showed left condylar base fracture with medial displacement and dislocation, and symphysis fracture. The fracture of condyle and symphysis were performed osteosynthesis with 2 mini-plates on ideal lines of osteosynthesis. The proximal segment of the condyle was placed totally three 7-mm-screws and 2 mini-plates. Six days after surgery, the patient transferred to our emergency center again due to fall by epileptic seizure. The patient drunk a lot of alcohol on the day before. CT indicated that left side fracture of condylar neck with medial displacement above the fixation plates, and no fracture of symphysis. The fracture line run on upper screw of posterior plate. The proximal segment of condyle could not be repositioned in the secondary surgery. The epilepsy patient following mandibular fracture might cause further epilepsy seizures. The risk factors of recurrence seizures should be evaluated including alcohol intake, less sleep and a history of noncompliance to anti-epileptic drugs.
22
Guven, Yeliz, Sevgi Zorlu, Abdulkadir Burak Cankaya, Oya Aktoren, and Koray Gencay. "A Complex Facial Trauma Case with Multiple Mandibular Fractures and Dentoalveolar Injuries." Case Reports in Dentistry 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/301013.
Full textAbstract:
The principles of management of mandibular fractures differ in children when compared to adults and depend on the specific age-related status of the growing mandible and the developing dentition. This paper presents a case report with a complex facial trauma affecting the mandibular body and condyle region and dentoalveolar complex. Clinical examination revealed soft tissue injuries, limited mouth opening, lateral deviation of the mandible, an avulsed incisor, a subluxated incisor, and a fractured crown. CBCT examination revealed a nondisplaced fracture and an oblique greenstick fracture of the mandibular body and unilateral fracture of the condyle. Closed reduction technique was chosen to manage fractures of the mandible. Favorable healing outcomes on multiple fractures of the mandible throughout the 6-year follow-up period proved the success of the conservative treatment. This case report is important since it presents a variety of pathological sequelae to trauma within one case.
23
Kozakiewicz, Marcin, Rafal Zieliński, Michał Krasowski, and Jakub Okulski. "Forces Causing One-Millimeter Displacement of Bone Fragments of Condylar Base Fractures of the Mandible after Fixation by All Available Plate Designs." Materials 12, no. 19 (September 25, 2019): 3122. http://dx.doi.org/10.3390/ma12193122.
Full textAbstract:
Background: There has been no direct comparison of all existing plates dedicated for fracture osteosynthesis of mandibular condyle base until now. The aim of the study was to test mechanically all available designs of titanium plates on the market on polyurethane mandibles using an individually designed clamping system. Methods: Forces required for a 1 mm displacement of fixed fracture and incidents of screw loosening were recorded. Results indicated the best mechanical plates among all existing designs available. Results: It has occured that some of osseofixation plates should not be used any more, whereas some shape of the single plates are similar shape to two single plates shape are regarded as the best osseofixation method for condyle base fracture. Conclusion: General observation is the bigger plate and more screws, the better rigid stable osteosynthesis of mandibular condyle base. 4 plates of current designs of total 30 tested series can be recommended for open rigid internal fixation of fractures of the base of the mandibular condyle. The rest of 26 existing plates should not be used in condylar base fractures.
24
Kau, Chung H., Omar Almakky, and Patrick J. Louis. "Team approach in the management of revision surgery to correct bilateral temporomandibular joint replacements." Journal of Orthodontics 47, no. 2 (March 4, 2020): 156–62. http://dx.doi.org/10.1177/1465312520908276.
Full textAbstract:
This case report describes the successful second surgical treatment of a 26-year-old white female patient with a retrognathic mandible and previous bilateral total joint prostheses placement. The patient had previously presented with bilateral idiopathic condylar resorption (ICR) which caused clockwise mandibular rotation and resulted in anterior open bite and a retrognathic mandible. The patient had undergone definitive corrective for the ICR where condylectomies were performed bilaterally. In addition, total joint prostheses using ‘stock joints’ were used to restore the condyle and glenoid fossa on both sides. Although the previous surgery corrected the anterior open bite and restored the condyles, the patient was still suffering from joint symptoms (significant pain), restricted mandibular movements, increased overjet (12 mm) and a retrognathic mandible. The treatment plan included a combined orthodontic surgical approach: (1) bimaxillary orthognathic surgery: a surgical procedure on the mandible to reposition the prosthetic joints and correct the mandible position, and a segmental LeFort I to expand the maxilla; and (2) post-surgical orthodontics treatment to detail the occlusion. At the end of the treatment, good aesthetic and functional results were obtained with the cooperation of two specialties. This case emphasises the importance of three-dimensional planning and multidisciplinary treatment when addressing complex jaw movements. It also emphasises the importance orthodontic planning and collaboration with the orthodontist.
25
Anirudhan, Anroop, Sherin A. Khalam, and Rakesh Koshy Zachariah. "Evaluation of clinical use of indigenously developed delta plate in management of subcondylar fracture." Clinics and Practice 3, no. 2 (October 11, 2013): 28. http://dx.doi.org/10.4081/cp.2013.e28.
Full textAbstract:
Condylar fractures account for 25-35% of mandibular fractures and deserve a special consideration apart from rest of the mandible due to their anatomical differences and healing potential. Previous clinical and biomechanical studies have recommended using two miniplates for fixation of condyle fractures. Two miniplates require a certain size of the proximal condyle fragment and thus are applicable mainly in cases involving low fractures. The present study evaluates the clinical use of indigenously developed titanium delta-shaped miniplate in open reduction and internal fixation of subcondylar fracture.
26
Gu, Yan, and James A. McNamara. "Mandibular Growth Changes and Cervical Vertebral Maturation." Angle Orthodontist 77, no. 6 (November 1, 2007): 947–53. http://dx.doi.org/10.2319/071006-284.1.
Full textAbstract:
Abstract Objective: To evaluate mandibular dimensional changes and regional remodeling occurring during five intervals of circumpubertal growth. Materials and Methods: This investigation evaluated a unique sample of subjects in whom tantalum implants were placed into the craniofacial complex during childhood. The sample was obtained from the Mathews and Ware implant study originally conducted at the University of California San Francisco in the 1970s, with longitudinal cephalometric records of 20 subjects (13 female, 7 male) available for evaluation. Cephalograms at six consecutive stages of cervical vertebral maturation (CS1 through CS6) were analyzed. Results: Peak mandibular growth was noted during the interval from CS3 to CS4. Forward rotation of the mandible was due to greater mandibular growth posteriorly than anteriorly. Progressive closure of the condylar-ramus-occlusal (CRO) angle resulted in a forward and upward orientation of the ramus relative to the corpus of the mandible due to increased vertical growth of the condyle. Conclusions: A peak in mandibular growth at puberty was substantiated. Mandibular remodeling and condylar rotation continue to occur after the growth spurt.
27
Manzie, Timothy, and Emma Lewis. "Novel use of the transparotid approach to the mandible for benign pathology." BMJ Case Reports 13, no. 7 (July 2020): e233246. http://dx.doi.org/10.1136/bcr-2019-233246.
Full textAbstract:
Access to the mandibular ramus can be difficult. There are a number of described methods for accessing the mandibular ramus and condyle, including a transoral or transcutaneous approach. Access via a transoral approach prevents surgical scars but can result in an excessive amount of bone removal from the anterior mandibular ramus. The transparotid approach has been described and commonly used for the management of mandibular trauma. It allows for direct access to the mandibular ramus and condyle with a number of possible complications, including salivary fistula formation, sialocele and facial nerve injury. Despite these risks, this approach is commonly used in the setting of trauma. This case report describes an additional indication, the successful use of the transparotid approach for the management of benign odontogenic pathology.
28
Chandra, Subhash, G. Anitha, Uma Shankar, BHV Rama Krishnam Raju, K. Venkata Srikanth, and Afshan Laheji. "Condylar Hyperplasia." Journal of Contemporary Dental Practice 13, no. 6 (2012): 914–17. http://dx.doi.org/10.5005/jp-journals-10024-1253.
Full textAbstract:
ABSTRACT Condylar hyperplasia (CH), as the name suggests, affects mandibular condyle producing overgrowth of condyle, which is characterized by a slowly progressive, usually unilateral enlargement of the mandible, facial asymmetry and deviation of chin to the unaffected side. The condition is known to be selflimiting, usually begins around puberty, but may not be recognized until later in life. This paper reports a case of severe facial asymmetry secondary to CH, which was successfully treated by high condylectomy only. How to cite this article Shankar U, Chandra S, Raju BHVRK, Anitha G, Srikanth KV, Laheji A. Condylar Hyperplasia. J Contemp Dent Pract 2012;13(6):914-917.
29
Dominguez, ManuelFernandez, Jose Luis Del Castillo, Mario Muñoz Guerra, RuthSanchez Sanchez, and Maria Mancha De La Plata. "Condylar Osteochondroma Treated with Total Condylectomy and Preservation of the Articular Disc: A Case Report." Craniomaxillofacial Trauma & Reconstruction 8, no. 2 (June 2015): 136–40. http://dx.doi.org/10.1055/s-0034-1393727.
Full textAbstract:
Osteochondroma is frequently found in the general skeleton but is rare in the condylar region of the mandible. We report a case of an osteochondroma of large size and rapid growth in the mandibular condyle, which was treated with total condylectomy and condylar replacement with a costochondral graft and preservation of the articular disc. In cases with a healthy and well-positioned articular disc, it may be preserved with no need of disc repositioning.
30
de Oliveira Filho, Marco Antonio, Luis Eduardo Almeida, Andrea Duarte Doetzer, Allan Fernando Giovanini, and Osvaldo Malafaia. "Spontaneous Condyle-Like Development after Total Resection of Mandible Giant Osteochondroma: Case Report and a Follow-Up for Five Years." Case Reports in Surgery 2020 (February 6, 2020): 1–5. http://dx.doi.org/10.1155/2020/3720909.
Full textAbstract:
Osteochondroma manifests as a benign tumor that occurs as an abnormal bony development. This tumor is commonly asymptomatic and presents an exophytic outgrowth on bone surfaces, near synovial joints, a condition that invariably induces evident facial deformities. Treatment for this type of tumor usually involves a surgical approach promoting a total or partial resection of the affected anatomical area associated to prosthetic reconstruction of the bone area extracted. We present a case report about a giant mandibular condyle osteochondroma in a 37-year-old female patient. Her treatment involved a total condylectomy without immediate condylar reconstruction, which would be performed in a posterior surgical approach. During the patient’s follow-up (every 6 months of post operation), a spontaneous and rudimentary condyle-like formation was observed. Because the stomatognathic function and facial harmony were satisfactory, we observed the condyle-like development for 5 years of follow-up. Also, because both the aesthetic aspect and functional evolution of the maxillary bone were considered satisfactory, no complementary reconstruction surgical treatment was required for the giant osteochondroma of the mandibular condyle.
31
Martins, Wilson Denis, Marina de Oliveira Ribas, Maria Helena de Sousa, Fernando Luiz Zanferrari, and Thais Lanzoni. "Osteochondroma of the Mandibular Condyle: Literature Review and Report of a Case." Journal of Contemporary Dental Practice 8, no. 4 (2007): 52–59. http://dx.doi.org/10.5005/jcdp-8-4-52.
Full textAbstract:
Abstract Aim The intent of this report is to present a brief review of the literature on osteochondroma and to present a case involving the surgical removal and replacement of a major portion of the condyle and angle of the mandible using free autogenous mandibular bone. Background While osteochondroma is the most common tumor of skeletal bones, it is relatively uncommon in the jaws occuring at the condyle or the tip of the coronoid process. This benign cartilage-capped growth is usually discovered incidentally on radiographic examination or on palpation of a protruding mass in the affected area. Malocclusion and progressive facial asymmetry are common findings in most cases of condylar osteochondroma. Report A case of a 29-year-old woman with an osteochondroma of the mandibular condyle is presented. Surgical treatment was tumor resection, grafting, and reshaping of the mandibular angle and ramus. As this lesion is usually asymptomatic and discovered incidentally on radiographic examination, the general practitioner usually is the first professional to make the diagnosis. Summary Condylectomy cannot be recommended as routine in all cases.37 Common surgical treatments include condylectomy and reconstruction.24 If the tumor involves only a limited area of the condylar surface, then preservation of the remaining portion of the condyle and reshaping should be done. Reasons for not taking such a conservative approach are the possibilities of malignancy and the risk of recurrence. In this case report the extraoral vertical ramus osteotomy, associated with free autogenous mandibular bone, presented several advantages. Citation de Oliveira Ribas M, Martins WD, de Sousa MH, Zanferrari FL, Lanzoni T. Osteochondroma of the Mandibular Condyle: Literature Review and Report of a Case. J Contemp Dent Pract 2007 May;(8)4:052-059.
32
Acharya, Pradip, G. Ren, MR Jaisani, A. Dongol, RP Yadav, AK Mahat, and F. Dong. "Application of cone-beam computed tomography (CBCT) for diagnosis and management of mandibular condyle fractures." Health Renaissance 13, no. 3 (August 3, 2017): 73–81. http://dx.doi.org/10.3126/hren.v13i3.17930.
Full textAbstract:
Background: Cone beam computed tomography (CBCT) provides precise imaging of temporomandibular joint anatomy without superimposition and distortion. CBCT is relatively a new imaging modality and used commonly in dental practice.Objective: The aim of this study is to present detailed imaging of emporomandibular joint in case of condyle fracture using CBCT for its use in diagnosis, surgical planning and evaluation of treatment.Method: In our study, we evaluated 3D - CBCT (three dimensional Cone beam computed tomography) examinations of 18 patients with mandibular condyle fractures. All of the fractures in our cases were overlooked on CBCT, thus providing axial, coronal and para-sagittal imaging of condylar head including 3D dimensional volumetric images of the condyle and surrounding structures.Result: Out of 18 condylar fracture patient’s CBCT, 8 radiographs showed condylar head (intracapsular) fracture, 2 condylar neck, 8 subcondylar fracture. 13 condylar fractures were unilateral and 5 were bilateral fracture. 9 of the condylar fractures were not associated with the mandible fracture. Out of the 9 associated condylar fractures; 3 were associated with symphysis fracture, 4 associated with parasymphysis fracture, 1 associated with body fracture and remaining 1 associated with mandibular angle fracture. 6 of the condylar fracture showed no signs of displacement of the fractured part and among 12 displaced condylar fracture parts 8 medially and 4 laterally displaced recorded in CBCT. All of the patients were given treatment on the basis of CBCT diagnosis and the results obtained from it was clinical satisfactory without complaints.Conclusion: We concluded that CBCT is the latest sophisticated technology which provides clear image of condylar head without superimposition of other structures, presented supplementary information for a more effective diagnosis and management of mandibular condyle fractures. Health Renaissance 2015;13 (3): 73-81
33
Awasthy, Arunima, Pramod Krishna B, Rajdeep Singh, Heena Mazhar, Durgesh Kumbhare, and Palak Agrawal. "Can Condylar Fracture Still Be Treated with Conservative Approach?? – A Retrospective Study." RGUHS Journal of Dental Sciences 13, no. 3 (2021): 169–75. http://dx.doi.org/10.26715/rjds.13_3_4.
Full textAbstract:
Background: Ideal management of mandibular condylar fractures remains controversial in maxillofacial trauma. Traditionally, conservative approach was implemented but recently ORIF (Open Reduction with Internal Fixation) has become prevalent. A difference of opinion has been acknowledged in the review of literature concerning the results achieved by open/closed reduction of fractures of the condyle in mandible. Research Objectives: To assess the preference of treatment for fractures of condyle and their indications, advantages, disadvantages and complications for open/closed reduction of fractures of condyle. Methodology: A 13-year retrospective study involving 56 patients who reported with fractures of condylar region were selected from 264 patients who experienced maxillofacial fractures. Out of them, seven were treated with ORIF, while 49 underwent closed reduction. Every patient was critically evaluated for identifying their indications, advantages, disadvantages, their effectiveness and complications of chosen interventions used in the management of condylar fractures. Findings: A male predominance was observed. Closed reduction with concomitant active physical therapy after inter-maxillary fixation gave similar results to that of open method. Conclusion: This study manifested that an appropriately followed conservative treatment provided similar clinical results when compared to ORIF for the management of condylar fractures. In cases with severe loss of height of mandible, surgical intervention is to be preferred to restore it. Further prospective randomized controlled trials with larger sample size are required to come to a decisive conclusion.
34
Kokal, Shailesh Nareshkumar, Suraj Arjun Ahuja, Nareshkumar T. Kokal, and Haemant A. Baonerkar. "Clinical Experience with Osteosynthesis of Subcondylar Fractures of the Mandible using Delta Plate." Journal of Contemporary Dentistry 6, no. 1 (2016): 63–66. http://dx.doi.org/10.5005/jp-journals-10031-1143.
Full textAbstract:
ABSTRACT Mandibular condyle fractures are one of the most frequent injuries of the facial skeleton. The option for open treatment of mandibular condyle fractures has become more favorable since osteosynthesis materials were developed in the past few decades. However, the rigid fixation techniques of treating condyle fractures remain one of the controversial issues in maxillofacial trauma. Several techniques and plate types such as adaption miniplates, minidynamic compression plates, resorbable plates, and double plates have been evaluated biomechanically in various experimental and clinical studies. The present case report is to evaluate the clinical use of indigenously developed titanium delta-shaped miniplate in open reduction and internal fixation of subcondylar fracture. How to cite this article Kokal SN, Ahuja SA, Kokal NT, Baonerkar HA. Clinical Experience with Osteosynthesis of Subcondylar Fractures of the Mandible using Delta Plate. J Contemp Dent 2016;6(1):63-66.
35
Sudheesh, K. M., Rajendra Desai, K. Sn Siva Bharani, and S. Subhalakshmi. "Evaluation of the Mandibular Function, after Nonsurgical Treatment of Unilateral Subcondylar Fracture: A 1-Year Follow-Up Study." Craniomaxillofacial Trauma & Reconstruction 9, no. 3 (September 2016): 229–34. http://dx.doi.org/10.1055/s-0036-1584399.
Full textAbstract:
There are no clearly defined guidelines for when an open or closed treatment is indicated for treatment of mandibular condylar fractures. The aim of the study is to analyze the mandibular function after nonsurgical treatment of unilateral subcondylar fractures, in a prospective study. A prospective study was conducted on 30 patients with unilateral mandibular subcondylar fracture undergoing nonsurgical treatment. Clinical and radiographic examinations were done prior to treatment and at 12-month follow-up. Pain, perceived occlusion, mouth opening, protrusion, and horizontal movements of the mandible were evaluated by clinical examination. Radiologic evaluation was done using Panoramic and Reverse Towne's radiographs. At 12-month follow-up, there was minimal pain in the temporomandibular joint region, there was an improvement in the perceived occlusion, and mouth opening did not reduce. There was insignificant absolute difference between left and right lateral mandibular movements. The amount of increase in the protrusion of mandible was insignificant. On radiographic evaluation, the degree of coronal and sagittal displacement was insignificant at follow-up. Mean ramus height pretreatment and 12 months posttreatment were 0.98 ± 0.50 and 0.87 ± 0.47, respectively. Based on this study, patients had adequate mandibular function and minimal pain after nonsurgical treatment. Unilateral subcondylar fractures of the mandible can be treated nonsurgically in patients with minimal occlusal discrepancies, adequate mouth opening, minimal displacement of condyle, and minimal ramus height shortening.
36
Zohar, Yuval, and Nelo Laurian. "Bifid condyle of the mandible with associated polythelia and manual anomalies." Journal of Laryngology & Otology 101, no. 12 (December 1987): 1315–19. http://dx.doi.org/10.1017/s0022215100103767.
Full textAbstract:
SummarySyndromes of oro-mandibular-skeletal anomalies are confusing by their ambiguous and overlapping components. It is our purpose to bring attention to a case comprising a group of anomalies: bifid mandibular condyle, asymmetric contralateral ascending ramus of the mandible, supernumerary nipples (polythelia), supernumerary-rudimentary postaxial sixth fingers and clinodactyly. The associated malformations presented do not correspond to any previous report. The case may therefore represent a new malformation syndrome.
37
Gali, Rajasekhar, Sathya Kumar Devireddy, Kishore Kumar Rayadurgam Venkata, Sridhar Reddy Kanubaddy, Chaithanyaa Nemaly, and Mallikarjuna Dasari. "Preauricular transmasseteric anteroparotid approach for extracorporeal fixation of mandibular condyle fractures." Indian Journal of Plastic Surgery 49, no. 01 (January 2016): 59–65. http://dx.doi.org/10.4103/0970-0358.182254.
Full textAbstract:
ABSTRACT Introduction: Free grafting or extracorporeal fixation of traumatically displaced mandibular condyles is sometimes required in patients with severe anteromedial displacement of condylar head. Majority of the published studies report the use of a submandibular, retromandibular or preauricular incisions for the access which have demerits of limited visibility, access and potential to cause damage to facial nerve and other parotid gland related complications. Purpose: This retrospective clinical case record study was done to evaluate the preauricular transmasseteric anteroparotid (P-TMAP) approach for open reduction and extracorporeal fixation of displaced and dislocated high condylar fractures of the mandible. Patients and Methods: This retrospective study involved search of clinical case records of seven patients with displaced and dislocated high condylar fractures treated by open reduction and extracorporeal fixation over a 3-year period. The parameters assessed were as follows: a) the ease of access for retrieval, reimplantation and fixation of the proximal segment; b) the postoperative approach related complications; c) the adequacy of anatomical reduction and stability of fixation; d) the occlusal changes; and the e) TMJ function and radiological changes. Results: Accessibility and visibility were good. Accurate anatomical reduction and fixation were achieved in all the patients. The recorded complications were minimal and transient. Facial nerve (buccal branch) palsy was noted in one patient with spontaneous resolution within 3 months. No cases of sialocele or Frey's syndrome were seen. Conclusion: The P-TMAP approach provides good access for open reduction and extracorporeal fixation of severely displaced condylar fractures. It facilitates retrieval, transplantation, repositioning, fixing the condyle and also reduces the chances of requirement of a vertical ramus osteotomy. It gives straight-line access to condylar head and ramus thereby permitting perpendicular placement of screws with minimal risk of damage to the facial nerve.
38
Shanmugam, Devakumari, Neil Dominic, Vijhayapriya Thanasekaran, Amudha Purushothaman, Dinesh Sridhar, and Devameena Shanmugam. "Management of mandibular condylar fractures by the retromandibular approach – An evaluation of its complications." Asian Journal of Medical Sciences 12, no. 2 (February 1, 2021): 80–85. http://dx.doi.org/10.3126/ajms.v12i2.31113.
Full textAbstract:
Background: Mandibular condyle fractures are commonly encountered in the practice of maxillofacial surgeon. Even though being a commonly seen fracture, the fracture condyle of the mandible demands meticulous diagnosis and a tailor made treatment plan for each and every patient. The treatment plan largely depends on the age of the patient and the displacement of the fractured fragment. This retrospective study provides an insight in to the management of fracture mandibular condyle by retromandibular approach.
Aims and Objectives: The aim of this study was to evaluate the complications of the retromandibular transparotid approach in surgically operated patients with mandibular condylar fractures.
Materials and Methods: A retrospective study was performed by analyzing the treatment records of patients who underwent open reduction and internal fixation (ORIF) by the retromandibular transparotid approach for seven years. Thirty-five patients who fulfilled the criteria were included in the study. Clinical parameters such as marginal mandibular nerve weakness, sialocele, occlusal derangement and decreased mouth opening were recorded during the first, fourth and twelfth weeks postoperatively. The retrieved data were analyzed for complications of the retromandibular approach in the management of mandibular condylar fractures.
Results: In patients (N= 35) who underwent ORIF by the retromandibular transparotid approach, findings recorded at the end of the first week included 5 patients with sialocele, 2 patients with derangement of occlusion, 6 patients with restricted mouth opening and 1 patient with marginal mandibular nerve weakness. However, postoperatively, at the end of 4 weeks, the only complication observed was sialocele in 3 patients. Furthermore, at the end of 12 weeks, sialocele had completely resolved in all 3 patients, and they were free of complications.
Conclusion: The retromandibular transparotid approach is a reliable and straightforward technique with manageable complications.
39
Aquilina, Peter, William C. H. Parr, Uphar Chamoli, and Stephen Wroe. "Finite Element Analysis of Patient-Specific Condyle Fracture Plates: A Preliminary Study." Craniomaxillofacial Trauma & Reconstruction 8, no. 2 (June 2015): 111–16. http://dx.doi.org/10.1055/s-0034-1395385.
Full textAbstract:
Various patterns of internal fixation of mandibular condyle fractures have been proposed in the literature. This study investigates the stability of two patient-specific implants (PSIs) for the open reduction and internal fixation of a subcondylar fracture of the mandible. A subcondylar fracture of a mandible was simulated by a series of finite element models. These models contained approximately 1.2 million elements, were heterogeneous in bone material properties, and also modeled the muscles of mastication. Models were run assuming linear elasticity and isotropic material properties for bone. The stability and von Mises stresses of the simulated condylar fracture reduced with each of the PSIs were compared. The most stable of the plate configurations examined was PSI 1, which had comparable mechanical performance to a single 2.0 mm straight four-hole plate.
40
CANSIZ, EROL, SUZAN CANSEL DOGRU, and YUNUS ZIYA ARSLAN. "COMPARATIVE EVALUATION OF THE MECHANICAL PROPERTIES OF RESORBABLE AND TITANIUM MINIPLATES USED FOR FIXATION OF MANDIBULAR CONDYLE FRACTURES." Journal of Mechanics in Medicine and Biology 15, no. 02 (April 2015): 1540032. http://dx.doi.org/10.1142/s0219519415400321.
Full textAbstract:
In this paper, comparative evaluation of the mechanical properties of resorbable and titanium miniplates, which are used for the fixation of the mandibular condyle fractures, was carried out using finite element analysis (FEA). To do so, first two-dimensional (2D) computed tomography (CT) images of mandibles recorded from 10 adult patients were converted into three-dimensional (3D) solid body models. Then these models were transferred to the finite element software. In the finite element stage of the study, a condyle fracture was created onto the mandible and double-titanium and double-resorbable miniplates were separately fixed to the mandible surface such that the fractured sites to be firmly attached. Stress distribution over the plates and interfragmentary displacements between adjacent surfaces, which stem from the clenching force applying to the mandible, were calculated using FEA. It was observed from the results that maximum tensile stresses occurred in the titanium miniplates were significantly higher than those obtained from resorbable miniplates (p < 0.01). Higher maximum displacements between fractured surfaces were observed in the case of resorbable plate systems (p < 0.01). Maximum stress and displacement values obtained from both titanium and resorbable plate systems were under clinically acceptable limits. According to results, resorbable plates showed a similar reliability with titanium miniplates in terms of withstanding various stress and strain deformations.
41
Budzik, Grzegorz, Paweł Turek, Tomasz Dziubek, and Michał Gdula. "Elaboration of the measuring procedure facilitating precision assessment of the geometry of mandible anatomical model manufactured using additive methods." Measurement and Control 53, no. 1-2 (December 2, 2019): 181–91. http://dx.doi.org/10.1177/0020294019881708.
Full textAbstract:
This article presents a procedure for minimizing ATOS II Triple Scan system measurement errors during the verification of geometrical accuracy of the final lateral-mandibular condyle model. The process of manufacturing a template geometrically similar to that of lateral-mandibular condyle was performed on the five-axis machining centre 100 DMU MonoBlock. The next stage of the research was related to the implementation of the measurement system procedure on the template model, and the 12 anatomical models of the mandibular body-condyle were manufactured using five different additive methods. As a result of the comparison of anatomical models of the mandibular body-condyle designed in reverse engineering/computer-aided design systems and manufactured using additive methods, the average results of histograms and parameters determining the accuracy of geometry of 12 models were obtained. In the case of models manufactured using fused deposition modelling, PolyJet and selective laser sintering techniques, a unimodal distribution was observed in the same way as in the template model. The best results were obtained in the case of models manufactured using selective laser sintering techniques (standard deviation = 0.06 mm). In the case of fused deposition modelling and PolyJet, a similar value of standard deviation (about 0.07 mm) was observed, despite the fact that the layer thickness for PolyJet technology was 0.016 mm. In the case of melted and extruded modelling and ColorJet Printing technologies, there was a bimodal distribution. Through the implementation of own template and measurement method, it will be easier to estimate errors in the manufacturing of anatomical models of lateral-mandibular condyle part. As a result, medical models, surgical templates and implants will be manufactured more accurately and precisely, which will significantly reduce intraoperative complications during the surgical procedure in this area.
42
Goil, Pradeep, Manojit Midya, Pankaj Sharma, and Gautam Prakash. "Chondroma of the mandibular condyle- rare location of a common benign cartilage tumour: case report and review of literature." International Journal of Otorhinolaryngology and Head and Neck Surgery 4, no. 5 (August 25, 2018): 1313. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20183708.
Full textAbstract:
<p>Chondroma is a benign tumour of mature hyaline cartilage.It is common in the tubular bones the hands and feetand conspicuous by its rarity in the mandible. We hereby present an interesting case of chondroma of the mandibular condyle that was managed in our department. The antecedent radiological findings and postoperative histopathological peculiarities of the case are discussed. This case also focuses the negligent attitude of our society towards one’s health problems until they are fraught with beliefs of cancer. Chondroma of the mandibular is a rare, benign slow growing tumour. Condylectomy is considered adequate treatment for all condylar masses. Surrounding margins of healthy soft tissue is also excised to prevent recurrences. </p>
43
Tuna, Elif Bahar, Aysun Dündar, Abdülkadir Burak Çankaya, and Koray Gençay. "Conservative Approach to Unilateral Condylar Fracture in a Growing Patient: A 2.5-Year Follow Up." Open Dentistry Journal 6, no. 1 (January 12, 2012): 1–4. http://dx.doi.org/10.2174/1874210601206010001.
Full textAbstract:
Condylar fractures in children are especially important because of the risk of a mandibular growth-center being affected in the condylar head, which can lead to growth retardation and facial asymmetry. The purpose of this article is to follow up the two and half year clinical and radiological evaluation of the conservative treatment of a 10 year-old patient, who had a unilateral green-stick type fracture. The patient presented with painful facial swelling localized over the left condylar region, limited mouth-opening and mandibular deviation to the left. Panoramic radiography and computed tomography confirmed the diagnosis of incomplete fracture on the left condyle with one side of the bone fractured and the other bent. Closed reduction was chosen to allow for initial fibrous union of the fracture segments and remodeling with a normal functional stimulus. A non-rigid mandibular splint was applied in order to remove the direct pressure on the fracture side of the mandible. Clinical and radiologic examination after 30 months revealed uneventful healing with reduction of the condylar head and remodeling of the condylar process following conservative treatment.
44
Barham, H. P., P. Collister, V. D. Eusterman, and A. M. Terella. "The Relationship of the Facial Nerve to the Condylar Process: A Cadaveric Study with Implications for Open Reduction Internal Fixation." International Journal of Otolaryngology 2015 (2015): 1–3. http://dx.doi.org/10.1155/2015/715126.
Full textAbstract:
Introduction. The mandibular condyle is the most common site of mandibular fracture. Surgical treatment of condylar fractures by open reduction and internal fixation (ORIF) demands direct visualization of the fracture. This project aimed to investigate the anatomic relationship of the tragus to the facial nerve and condylar process.Materials and Methods. Twelve fresh hemicadavers heads were used. An extended retromandibular/preauricular approach was utilized, with the incision being based parallel to the posterior edge of the ramus. Measurements were obtained from the tragus to the facial nerve and condylar process.Results. The temporozygomatic division of the facial nerve was encountered during each approach, crossing the mandible at the condylar neck. The mean tissue depth separating the facial nerve from the condylar neck was 5.5 mm (range: 3.5 mm–7 mm, SD 1.2 mm). The upper division of the facial nerve crossed the posterior border of the condylar process on average 2.31 cm (SD 0.10 cm) anterior to the tragus.Conclusions. This study suggests that the temporozygomatic division of the facial nerve will be encountered in most approaches to the condylar process. As visualization of the relationship of the facial nerve to condyle is often limited, recognition that, on average, 5.5 mm of tissue separates condylar process from nerve should help reduce the incidence of facial nerve injury during this procedure.
45
Iikubo, Masahiro, Ikuho Kojima, Maya Sakamoto, Akane Kobayashi, Hidetoshi Ikeda, and Takashi Sasano. "Morphological and Histopathological Changes in Orofacial Structures of Experimentally Developed Acromegaly-Like Rats: An Overview." International Journal of Endocrinology 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/254367.
Full textAbstract:
Tongue enlargement and mandibular prognathism are clinically recognized in almost all patients with acromegaly. An acromegaly-like rat model recently developed by exogenous administration of insulin-like growth factor I (IGF-I) was used to investigate morphological and histopathological changes in orofacial structures and to clarify whether these changes were reversible. Exogenous administration of IGF-I evoked specific enlargement of the tongue with identifiable histopathological changes (increased muscle bundle width, increased space between muscle bundles, and increased epithelial thickness), elongation of the mandibular alveolar bone and ascending ramus, and lateral expansion of the mandibular dental arch. Regarding histopathological changes in the mandibular condyle, the cartilaginous layer width, bone matrix ratio, and number of osteoblasts were all significantly greater in this rat model. After normalization of the circulating IGF-I level, tongue enlargement and histopathological changes in the tongue and mandibular condyle were reversible, whereas morphological skeletal changes in the mandible remained.
46
Cavalcanti, Samantha Cristine Santos Xisto Braga, Luciana Corrêa, and João Gualberto de Cerqueira Luz. "Facial symmetry evaluation after experimentally displaced condylar process fracture in methotrexate treated rats." Acta Cirurgica Brasileira 27, no. 3 (March 2012): 210–16. http://dx.doi.org/10.1590/s0102-86502012000300002.
Full textAbstract:
PURPOSE: To investigate the facial symmetry of high and low dose methotrexate (MTX) treated rats submitted to experimentally displaced mandibular condyle fracture through the recording of cephalometric measurements. METHODS: One hundred male Wistar rats underwent surgery using an experimental model of right condylar fracture. Animals were divided into four groups: A - saline solution (1mL/week); B - dexamethasone (DEX) (0,15mg/Kg); C - MTX low dose (3 mg/Kg/week); D - MTX high dose (30 mg/Kg). Animals were sacrificed at 1, 7, 15, 30 and 90 days postoperatively (n=5). Body weight was recorded. Specimens were submitted to axial radiographic incidence, and cephalometric mensurations were made using a computer system. Linear measurements of skull and mandible, as well as angular measurements of mandibular deviation were taken. Data were subjected to statistical analyses among the groups, periods of sacrifice and between the sides in each group (α=0.05). RESULTS: Animals regained body weight over time, except in group D. There was reduction in the mandibular length and also changes in the maxilla as well as progressive deviation in the mandible in relation to the skull basis in group D. CONCLUSION: Treatment with high dose methotrexate had deleterious effect on facial symmetry of rats submitted to experimentally displaced condylar process fracture.
47
Hartati, Sri, Heryumani JCP, and Kuswahyuning Kuswahyuning. "Perubahan Posisi Mandibula pada Perawatan Kamuflase Maloklusi Kelas III Skeletal." Majalah Kedokteran Gigi Indonesia 20, no. 2 (December 1, 2013): 140. http://dx.doi.org/10.22146/majkedgiind.7675.
Full textAbstract:
Maloklusi kelas III skeletal pada umumnya memiliki hubungan rahang yang prognatik, yaitu mandibula terletak lebih maju dari maksila. Perawatan kamuflase non pembedahan pada pasien dewasa dengan maloklusi kelas III memerlukan pencabutan dua gigi premolar mandibula atau empat gigi premolar untuk memberikan ruang retraksi gigi incisivus mandibula. Prinsip perawatan teknik Begg adalah mekanisme gaya differensial dengan menggunakan gaya yang ringan dan kontinyu. Penggunaan elastik intermaksiler kelas III menyebabkan ekstrusi gigi molar atas, retrusi gigi insisivus bawah, rotasi mandibula searah jarum jam dan perubahan posisi kondilus. Penelitian ini bertujuan untuk mengetahui perubahan linier dan anguler posisi mandibula pada perawatan kamuflase maloklusi kelas III skeletal setelah dilakukan perawatan ortodontik dengan teknik Begg. Penelitian dilakukan pada 20 pasang sefalogram lateral dari subjek laki-laki dan perempuan usia 18-25 tahun yang memenuhi kriteria penelitian. Seluruh subjek yang dirawat dengan teknik Begg disertai pencabutan dua gigi premolar pertama bawah. Perubahan posisi mandibula ditentukan dengan perubahan titik Pg dan Pg. terhadap sumbu X dan sumbu Y sedangkan perubahan anguler dengan melihat perubahan sudut Y-axis. Data yang diperoleh dianalisisi dengan paired t test. Hasil penelitian perubahan posisi mandibula setelah perawatan ortodontik kamuflase dengan alat cekat teknik Begg menunjukkan perubahan yang bermakna (p<0,05). Titik Pg mengalami pergeseran ke arah posterior dan inferior dan sudut Y-axis mengalami peningkatan berarti terjadi rotasi searah jarum jam.Skeletal Class III malocclusion generally has prognatic jaw relationship. The mandibular is more forward than the maxilla. Camouflage non-surgical treatment in adult patients with Class III malocclusion required extraction of two mandibular premolars or four premolar teeth to give a space of mandibular incisors teeth retraction. The Begg technique treatment principle is the mechanism of differential force using light and continuous force. The use of inter-maxillary elastic Class III causes the extrusion of upper molars, retrusion of lower incisors, clockwise rotation of the mandible and changing of condyle position. This research aims to determine the linear changing and angular position of the mandible on the camouflage treatment of skeletal Class III malocclusion after orthodontic treatment with Begg technique. The research was conducted on 20 pairs of lateral cephalogram of men and women aged 18-25 years who met the research criteria. All subjects were treated with Begg technique with extraction of two lower first premolars. The changing of mandibular position is determined by changing the point Pg and Pg. to X axis and Y axis, while the angular changing is determined by looking at the changing of Y-axis. The obtained data were analysed with paired t test analysis. The results show that there are significant changes in mandibular position after camouflage orthodontic treatment with fixed appliance of Begg technique (p<0,05). Pg point is shifted towards the posterior and inferior, and Y-axis angle increases. It means that the clockwise rotation has happened.
48
Sarwar, Humaira, Irfan Shah, Ali Akhtar Khan, Adnan Babar, Saad Mehmood, and Wajid Meraj. "CLINICAL AND RADIOLOGICAL OUTCOMES OF MANDIBULAR CONDYLAR FRACTURES AFTER CONSERVATIVE TREATMENT." PAFMJ 71, no. 2 (April 30, 2021): 667–71. http://dx.doi.org/10.51253/pafmj.v71i2.5251.
Full textAbstract:
Objective: To assess the clinical as well as radiological outcomes of the conservative management of mandibular condyle fractures.
Study Design: Cross-sectional comparative study.
Place and Duration of Study: Department of Oral and Maxillofacial Surgery (OMFS), Armed Forces Institute of Dentistry (AFID), Rawalpindi, from Feb 2018 to Aug 2019.
Methodology: A total of 60 patients diagnosed as isolated mandible trauma with unilateral condyle fractures were studied. All patients were assessed radiologically on orthopantomogram (OPG) before the start of treatment. They were assessed clinically for maximum mouth opening (MMO), occlusion, pain and masticatory satisfaction before the start of treatment and after conservative management. Conservative Management includes soft diet only or maxillomandibular fixation (MMF) followed by active physical therapy. After 6 months of follow up, pre-treatment and post-treatment clinical parameters and radiological finding were compared.
Results: Sixty patients were managed conservatively, among them 37 (62%) were male and 23 (38%) were female with age range of 21-53 years. There was statistically significant decrease in pain (p-value 0.002) and improvement in mastication (pvalue 0.079) before and after the conservative treatment of mandibular condylar fractures. Overall 46 (77%) patients treated with conservative management were satisfied with their mastication and 40 (67%) patients had mild pain on mastication. All the patients showed satisfactory occlusion and had no occlusal discrepancy on last follow up visit. Maximum mouth opening improved from 32.38 ± 4.54 to 40.90 ± 1.75 after treatment. The mean of preoperative ramus length difference of both sides of the mandible was 4.23 ± 2.3 mm............
49
Bielecki-Kowalski, Bartosz, and Marcin Kozakiewicz. "Choice of Screws for Fixation of Mandibular Condyle Fractures Guided by Anthropometric Data." Applied Sciences 11, no. 8 (April 9, 2021): 3371. http://dx.doi.org/10.3390/app11083371.
Full textAbstract:
Open reduction and internal fixation (ORIF) is becoming increasingly common in treatment of the condylar process, including mandible head fractures. This approach significantly improves the results in terms of anatomical reduction of bone fragments, and shortens the treatment time, allowing for early functional recovery. The success of ORIF is largely determined by the stability of the osteosynthesis. The stabilization effect depends on the screw type and length of the plate used, in addition to the diameter and length of the screws used. The aim of this study was to determine the largest possible screw length that can be used in ORIF of the mandibular condyle considering the variable bone thickness. A total of 500 condyles were examined using computer tomography (CT)-based 3D models in Caucasians. For all models, three measurements were made in the frontal projection in places typical for the stabilization of osteosynthesis plates in the fractures of the condylar process: the base, the top, and the sigmoid notch. In addition, one measurement of the mandible head was made in the place of the greatest width. The results showed that 8 mm screws should be used in the region of the condylar base as the longest anatomically justified screw, whereas in the area of a sigmoid notch only 1.5–2 mm screws should be used. Measurements in the area of the neck top revealed statistically significant differences in the measurements between the sex of patients, with average differences below 1 mm (p < 0.05). In this area, the maximal length of the screw was found to be 10 mm. In mandibular head fractures, the use of long screws is extremely important due to the desired effect of fragment compression. Statistically significant differences were found in the measurement results between women and men. The maximal screw length for bicortical fixation was found to be 22 mm in men and 20 mm in women. In post-traumatic patients, the ability to obtain a clear measurement is often limited by a deformed anatomy. Taking into account the fact that the fracture stability is influenced by both the plate length and the length of the fixation screws, an assessment of the standard measurement values in a cohort group will improve the quality of the surgical fixations of the fractures.
50
Farzad, Payam. "A Case of an Extensive Keratocystic Odontogenic Tumor in the Mandible Reconstructed with a Custom-Made Total Joint Prosthesis." Craniomaxillofacial Trauma & Reconstruction 11, no. 2 (June 2018): 131–37. http://dx.doi.org/10.1055/s-0036-1597585.
Full textAbstract:
The use of virtual surgical planning and computer-aided design/computer-aided manufacturing has previously been reported to enhance the planning for the reconstruction of mandibular continuity defects and to reduce surgical time. Reported is a case of a large keratocystic odontogenic tumor (KOT) affecting right hemimandible including the condylar neck. This case was initially reconstructed with a condyle-bearing reconstruction plate, but because of fatigue fracture 15 years later, a new reconstruction with a custom-made total joint temporomandibular prosthesis was performed.