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Journal articles on the topic 'Articulation and occlusion'
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Orthlieb, J. D., J. P. Ré, M. Jeany, and A. Giraudeau. "Articulation temporo-mandibulaire, occlusion et bruxisme." Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale 117, no. 4 (September 2016): 207–11. http://dx.doi.org/10.1016/j.revsto.2016.07.006.
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Dejak, Anna, Aneta Gliszczyńska, Aleksandra Kapiczke, and Beata Dejak. "Comparison of TMJ angles based on the ARCUSdigma II examination and occlusion records in the Protar 7 articulator." Prosthodontics 68, no. 1 (March 15, 2018): 73–84. http://dx.doi.org/10.5604/01.3001.0011.6808.
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Introduction. Prosthetic restorations should be adjusted to the patients’ occlusion and articulation. Traditional and modern articulator and face-bow systems that simulate individual jaw movements are used in the treatment. Aim of the study. The aim of the study was to compare the values of TMJ angles based on the ARCUSdigma examination and wax occlusion records in the Protar 7 articulator. Method. The study was conducted on a group of 20 patients aged 23-30 years with full dentition and normal occlusion. The position of the maxilla was recorded with face-bow ARCUSevo. Every patient was examined using ARCUSdigma II device. Cast models of the maxilla and mandible were made and mounted in Protar 7 articulator. Wax occlusion records were taken in intercuspal, protrusive and laterotrusive positions. On their basis TMJ angles were established in the articulator. The sagittal condylar inclination and Bennett angles relative to the Frankfurt plane obtained using electronic measurement and manual settings in the articulator were compared. Results. Mean values of sagittal condylar inclination angles based on occlusion records in Protar 7 articulator amounted to 56.9° on the left and 53.7° on the right side and the ARCUSdigma respectively 58.8° for the left and 55.6° for the right TMJ. According to occlusion records in articulator average Bennett angles were valued 11.2° (left) and 9.7° (right), while ARCUSdigma 8.5° (left) and 7.3° (right). Conclusions. Mean values of sagittal condylar inclination angles determined by the occlusion records in Protar 7 articulator and obtained in the ARCUSdigma examination were different and higher than the average values. Mean values of Bennett angles obtained in an ARCUSdigma examination were lower than using occlusion records in Protar 7 articulator and lower than the average values.
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Arnautska, Hristina, Desislava Konstantinova, Mariana Dimova, Ivan Gerdzhikov, and Tihomir Georgiev. "Functional disorders in patients with unbalanced occlusion and articulation." Journal of Medical and Dental Practice 2, no. 3 (November 16, 2015): 293–99. http://dx.doi.org/10.18044/medinform.201523.293.
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Ercoline, William R., Kent K. Gillingham, Frances A. Greene, and Fred H. Previc. "Effects of Variations in Head-Up Display Pitch-Ladder Representations on Orientation Recognition." Proceedings of the Human Factors Society Annual Meeting 33, no. 20 (October 1989): 1401–5. http://dx.doi.org/10.1177/154193128903302008.
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Head-up display (HUD) research has centered on modifications to the basic aircraft control symbology—the pitch-ladder lines. Although some of these modifications have led to minor improvements in attitude recognition, major problems still exist: pilots continue to experience spatial disorientation and to complain of occlusion due to the HUD symbols. This experiment compared four variations of a basic HUD pitch ladder: Display A, double articulation; Display B, single negative articulation; Display C, single negative articulation with gradually increasing thickness; and Display D, single negative articulation with gradually increasing thickness in a global arrangement. Accuracy of bank recognition was best when pitch-ladder symbology incorporated noticeable asymmetry. Double articulation and graduated thickness were associated with greater accuracy of pitch recognition. Studies under dynamic conditions are recommended.
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Ozawa, Erika, Ei-ichi Honda, Hiroshi Tomizato, Tohru Kurabayashi, Kulthida Nunthayanon, Hiroko Ohmori, Kazuo Shimazaki, and Takashi Ono. "Preliminary study of articulatory characteristics in open bite subjects revealed by 3T magnetic resonance imaging movies." APOS Trends in Orthodontics 11 (April 10, 2021): 14–22. http://dx.doi.org/10.25259/apos_174_2020.
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Objectives: Previous studies have reported that articulatory dysfunction accompanied by a certain type of malocclusion can be improved by orthodontic treatment. We developed a 3-T magnetic resonance imaging (MRI) movie method with tooth visualization that can display the dynamic movement of articulation without radiation exposure. To the best of our knowledge, there is currently no report on the possible differences in articulatory movement between subjects with a normal occlusion and those with malocclusion using the 3T MRI movie method. Thus, the objective of this study was to examine the articulatory difference between subjects with a normal occlusion and those with an open bite using an MRI movie. Materials and Methods: Twenty healthy adult females, ten with a normal occlusion and ten with an anterior open bite were recruited. The overbite of the open bite subjects was zero or smaller, and all of them exhibited a tongue-thrusting habit during swallowing. A turbo spin echo image with a contrast medium was used to visualize the anterior teeth, and articulatory movement during articulation of the vowel-consonant-vowel syllable (/asa/) was scanned. The difference in tongue movement between subjects with a normal occlusion and those with an open bite was compared by measuring seven variables. Moreover, the distance between the incisal edge and the tongue apex during articulation of /s/ and the speech duration were compared. Furthermore, frequency analysis on /s/ by fast Fourier transform power spectrum was performed. Results: The tongue apex of the open bite subjects moved more anteriorly than that of the normal subjects. However, there was no significant difference in the phonetic analysis between subjects with a normal occlusion and those with an open bite. Conclusion: The 3-T MRI movie was an efficient method to quantify articulatory tongue movements. Although there was a difference in tongue movement during swallowing between subjects with a normal occlusion and those with an open bite, the difference in the articulatory tongue movements was minimal, suggesting it could be a functional compensation.
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Chkhikvadze, T. V., E. M. Roschin, and V. V. Bekreev. "Comparative analysis of the application of virtual and mechanical articulators in functional diagnostics." RUDN Journal of Medicine 24, no. 1 (December 15, 2020): 38–51. http://dx.doi.org/10.22363/2313-0245-2020-24-1-38-51.
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The paper presents the results of examination of patients with articulation disorders of the lower jaw caused by internal pathology of the TMJ. The purpose of the presented work: to study the effectiveness of the use of mechanical and virtual articulators in the functional diagnosis of patients with internal TMJ disorders. All patients underwent comprehensive clinical and instrumental examination including cone-beam computed tomography (CT) and axiographic examination (optical axiograph Dentograf Prosystom, Russia). CBCT was used to assess the state of the TMJ and determine the individual ratio of jaw and joint models. When axiography was recorded and analyzed articular trajectories of the lower jaw. In the first group of patients dynamic occlusion was evaluated using a mechanical articulator, in the second group a virtual articulator was used. It was revealed that the use of mechanical articulators in functional diagnostics to assess dynamic occlusion is limited and does not allow to obtain individualized patient data, their efficiency was 75%. The use of virtual articulators allows to evaluate the dynamic occlusion during opening and closing of the mouth, protrusion and laterotrusion, as well as the continuous movement of the lower jaw with the registration of all possible dental contacts. Due to the combination of CT data of the patient’s head and virtual models, the highest accuracy of placing models in the virtual articulator in accordance with the individual characteristics of patients was achieved.
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Nahlah, E. A., P. S. Baker, D. S. Pannu, and J. Londono. "Technique for Rebasing and Tooth Replacement of the Implant Retained Fixed Complete Denture Incorporating an Existing Metal Framework." International Journal of Medical and Dental Sciences 2, no. 2 (July 1, 2013): 215. http://dx.doi.org/10.19056/ijmdsjssmes/2013/v2i2/86789.
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This article describes a simplified impression technique for replacement of acrylic resin denture base material and teeth for an implant retained fixed complete denture utilizing the existing metal framework. This method permits precise alignment of the impression and framework to implants and residual ridges, and simultaneously provides a cast and record for articulation of replacement teeth at the appropriate vertical dimension of occlusion.
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Dimova, Mariana. "OCCLUSION AND ARTICULATION IN BRUXISM AND BRUXOMANIA INVESTIGATED WITH THE SYSTEM T-SCAN III." Journal of IMAB - Annual Proceeding (Scientific Papers) 20, no. 5 (November 25, 2014): 655–60. http://dx.doi.org/10.5272/jimab.2014205.655.
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Lykhota, K. M. "EVALUATION OF THE DYNAMICS OF OCCLUSION RATIO DURING ORTHODONTIC TREATMENT OF PATIENTS WITH PERMANENT BITE." Ukrainian Dental Almanac, no. 4 (December 12, 2018): 50–54. http://dx.doi.org/10.31718/2409-0255.4.2018.09.
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The unity of the tooth-jaw system is ensured by the close interaction of dental rows, jaws, chewing and facial muscles, temporomandibular joint. Surgical anomalies of bite are often accompanied by significant changes in occlusion ratio of the tooth-jaw system, which significantly affects the quality of life of patients [1, 2, 3]. Significant influence on occlusion ratio has orthodontic treatment. Introduction of high technologies into the practice of prevention and treatment of abnormalities of the zygomatic system contributes to the improvement of dental health, however, the problem of violation of occlusive ratio in dental anomalies and deformations persists in connection with the increase in the prevalence of bite pathology among the population of Ukraine [4, 5].
Investigation of violations of occlusion of dentitions is an integral part of the complex functional analysis of the dental maxillary apparatus. The most common clinical technique for the analysis of occlusive ratio is the technique of occlusion through articulation paper. However, this method does not meet current requirements, because it reflects neither such parameters as the strength and timeliness of tooth contacts, nor contains information about the nature of occlusive violations. Checking only the static parameters of occlusion is not a complete objective method of assessing the quality of treatment. With a sufficient number and correctly placed occlusal contacts, adequate interposition of the components of the temporomandibular joint, the formation of physiological occlusion will be the basis for the uniform distribution of functional loads. In order to solve the problems, a comprehensive study of the parameters of dynamic occlusion is necessary [6, 7].
Up to date, an objective criterion for evaluating occlusion is the use of computerized analysis of occlusion with the help of T-Scan. The results obtained during this study can be used to control the quality of performed orthodontic treatment [6, 7, 8, 9].
Purpose. Determination of the dynamics of occlusal ratio for 117 people of different age groups with sagittal malocclusions during orthodontic treatment generally and specific methods.
Materials and methods of research. Occlusion contacts were assessed using a computerized occlusion analysis of T-Scan III (USA). Depending on the type of pathology of the occlusion, patients were divided into two groups: A (patients with distal occlusion) and B (patients with mesial occlusion), which depended on the method of orthodontic treatment, and were further divided into 2 subgroups.
In the subgroups A1 (33 patients) and B1 (28 patients), the treatment was performed with the help of individual myofunctional apparatus - Elastoelainers, in group II patients of subgroup A2 (35 patients), and patients of subgroup B2 (21 patients) - treatment was carried out using fixed dentistry (bracket system).
The control group consisted of 20 people of the same age with physiological bites and intact dentition.
Results. Studies have shown that people with sagittal malocclusions expressed disturbances of occlusal ratio (presence premature occlusal contacts on the natural teeth, changes in the direction of the trajectory of the total vector occlusion load) experienced significant changes in the dynamics of the proposed orthodontic treatment, and closer to those of the control group immediately after treatment.
Conclusions. The effectiveness of orthodontic treatment of patients with sagittal anomalies of occlusion with the help of individually myofunctional devices has been proved, which is confirmed by the data of the dynamics of indices of computer occlusion.
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Davydov, В. N., Т. S. Kochkonyan, D. A. Domenyuk, S. V. Dmitrienko, and Ghamdan Al-Harazi. "Odontoscopic and morphometric assessment of occlusion circuits of permanent teeth in patients with physiological occlusion." Medical alphabet, no. 24 (September 26, 2021): 50–58. http://dx.doi.org/10.33667/2078-5631-2021-24-50-58.
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A dentist needs special knowledge in odontology and odontoglyphics, which allows visualizing the space and relief of the tooth surface, as well as conducting an in-depth analysis of the individual morphometric characteristics of the tooth. Expansion of knowledge about the variability of the occlusal relief will allow achieving balanced occlusal-articulation relationships of the dentition and preserving the physiological state of the dentition. The article presents the results of odontoscopic and morphometric studies of vertical, transverse parameters of the upper large molars in patients with various physiological types of occlusion. The subject of the study was the segments of the upper molars obtained from plaster models of the jaws of 92 people with physiological occlusion, a full set of permanent teeth and various types of dental system (patients in group 1 – normodontism, patients in group 2 – macrodontism, patients in group 3 – microdontism). For morphometry in the transverse direction, the vestibular-lingual size of the crown and neck of the tooth, as well as the intertubercular distance, were used. To measure the vertical parameters, the height of the mesial (protocone, paracone) and distal (metacone, hypocone) odontomeres and tubercle of the occlusal surface was determined. The results of the study showed that in people with physiological occlusion and macrodontism of permanent teeth, vertical, transverse parameters exceed those of people with normodont and microdont types of the dental system. It is advisable to use the obtained odontometric features at the stages of diagnosing occlusal relationships and identifying various forms of pathological, physiological abrasion with varying degrees of loss of occlusal surfaces.
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Prabhat, K. C., Sanjeev Kumar Verma, Sandhya Maheshwari, Ibne Ahmad, and Mohd Tariq. "Computed Tomography Evaluation of Craniomandibular Articulation in Class II Division 1 Malocclusion and Class I Normal Occlusion Subjects in North Indian Population." ISRN Dentistry 2012 (August 16, 2012): 1–5. http://dx.doi.org/10.5402/2012/312031.
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Objective. The purpose of this study is to investigate the Craniomandibular articulation morphology and position of condyle in mandibular fossae in Angle’s class I normal occlusion and Angle’s class II division 1 malocclusion. Materials and Methods. The present study was conducted on 40 subjects with 20 subjects in each group, and the computed tomography images were obtained using spiral computed tomography technique. Each measurement was compared by two-factor analysis of variance (ANOVA) while changes in anterior and posterior joint spaces were done by paired t-test. Results. Statistically significant anterior positioning of condyle was observed in class I normal malocclusion, and it was significant only on right side in class II division 1 malocclusion. Conclusions. There was no difference found in the condylar process and joint morphology between right and left sides of both Angle’s Class I normal occlusion and Angle’s class II division 1 malocclusion. Evaluation of the position of the condyles in their respective mandibular fossae showed concentric position with a tendency towards anterior positioning for both right and left sides of the subjects with Angle’s Class I normal occlusion as well as subjects with Angle’s class II division 1 malocclusion.
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Vallino-Napoli, Linda D. "A Profile of the Features and Speech in Patients with Mandibulofacial Dysostosis." Cleft Palate-Craniofacial Journal 39, no. 6 (November 2002): 623–34. http://dx.doi.org/10.1597/1545-1569_2002_039_0623_apotfa_2.0.co_2.
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Purpose To present a profile of the features and speech in patients with mandibulofacial dysostosis (MFD). Data were collected on occlusion, palatal condition, hearing, resonance, voice, and articulation. Patients Thirty patients with MFD ranging in age from 1.6 to 21.0 years. Study Design Retrospective and prospective cross-sectional designs. Setting Pediatric tertiary care hospital. Results Sixty percent of the patients had an open bite. Isolated cleft palate was found in 37% with other types of cleft conditions occurring less frequently. Twenty-three percent underwent tracheostomy. All patients demonstrated hearing loss, 93% were conductive and 7% were mixed. Resonance, voice, and articulation were also affected. Seventy-seven percent had aberrant resonance including hypernasality, hyponasality, mixed hyper- and hyponasality or muffled resonance, which was found in 40% of the patients. Voice quality was abnormal in 63%. All patients had articulation errors. Although overlap between categories occurred, results showed that 60% had errors related to malocclusion, 30% demonstrated errors usually associated with velopharyngeal inadequacy and 50% had general articulatory or phonological errors that could be attributed to other causes. Conclusions The features and speech of patients with MFD are complex. The speech disorders may have multiple overlapping etiologies that require careful differential diagnosis. This is imperative to establish appropriate treatment regimens and evaluate clinical outcomes.
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Hussein, Majed. "IMPAKT OF THE VERTICAL DIMENSION OF OCCLUSION AND ARRANGEMENT OF TEETH ON SPEECH ARTICULATION (QUESTIONNAIRE STUDY)." Journal of IMAB - Annual Proceeding (Scientific Papers) 26, no. 2 (June 17, 2020): 3198–202. http://dx.doi.org/10.5272/jimab.2020262.3198.
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BHANU, BIR, and GRINNELL JONES. "MULTIPLE LOOK ANGLE SAR RECOGNITION." International Journal of Image and Graphics 04, no. 01 (January 2004): 85–98. http://dx.doi.org/10.1142/s0219467804001300.
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The focus of this paper is optimizing the recognition of vehicles in Synthetic Aperture Radar (SAR) imagery by exploiting the azimuthal variance of scatterers using multiple SAR recognizers at different look angles. The variance of SAR scattering center locations with target azimuth leads to recognition system results at different azimuths that are independent, even for small azimuth deltas. Extensive experimental recognition results are presented in terms of receiver operating characteristic (ROC) curves to show the effects of multiple look angles on recognition performance for MSTAR vehicle targets with configuration variants, articulation, and occlusion.
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Bocklage, Rainer. "Biomechanical Aspects of Monoblock Implant Bridges for the Edentulous Maxilla and Mandible: Concepts of Occlusion and Articulation." Implant Dentistry 13, no. 1 (March 2004): 49–53. http://dx.doi.org/10.1097/01.id.0000116452.45096.e0.
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Habar, Ike Damayanti. "Gigitiruan sebagian imidiat untuk memperbaiki estetik gigi anterior yang mengalami kelainan periodontal." Journal of Dentomaxillofacial Science 6, no. 1 (April 30, 2007): 21. http://dx.doi.org/10.15562/jdmfs.v6i1.133.
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The treatment of immediate partial denture has the objective of enhancing the aestheticsof the condition and position of protrusive anterior teeth because of periodontal disorderthat would improve the face appearance. This case study was carried out on a 32-year oldfemale patient with protrusive and very mobile anterior teeth that obstruct the lipsclosure. The diagnosis of patient was dental protrusion in upper and lower mandiblealong with diastema as the result of rapidly progressive periodontitis. The treatmentimplemented was the construction of immediate partial denture with extraction of theanterior teeth. After insertion, control was performed at 24 hours, three days and sevendays. It appeared that aesthetics, occlusion, articulation, retention and stabilization wasvery good.
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Bozhkova, Tanya P. "The T-SCAN System in Evaluating Occlusal Contacts." Folia Medica 58, no. 2 (June 1, 2016): 122–30. http://dx.doi.org/10.1515/folmed-2016-0015.
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AbstractBackground: Normal occlusal and articulation relations between the jaws ensure equal distribution of occlusal forces during mastication. A T-SCAN system allows these relations to be measured dynamically during the articulation cycle.Aim: To evaluate the T-SCAN III system in measuring and assessing the forces of occlusal contacts and their digital presentation.Patients and methods: Thirty students aged 19 - 22 years were examined. Of these only one matched the study criteria:- intact dentition;- without or with class I fillings in teeth 36 or 46;- Angle’s class I jaw relationWe used a computerized occlusal analysis system T-SCAN in the study. It comes with a registering sensor for the occlusal contacts, a module for transmitting the signals to a computer, and conversion software to generate images on a computer screen.Results: We evaluated the system’s capabilities in registering the occlusal contacts during mastication on an occlusion film and the occlusal forces using a digital display.Conclusion: The T-SCAN system provides the only accurate way to determine and evaluate the time sequence and force of occlusal contacts by converting the qualitative data into quantitative and displaying them digitally.
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Joseph Vedhagiri, Godwin Ponraj, and Hongliang Ren. "Sensor Fusion of Leap Motion Controller and Flex Sensors using Kalman Filter for Human Finger Tracking." IAES International Journal of Robotics and Automation (IJRA) 6, no. 3 (September 1, 2017): 178. http://dx.doi.org/10.11591/ijra.v6i3.pp178-187.
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<span>In our daily life, we, human beings use our hands in various ways for most of our day-to-day activities. Tracking the position, orientation and articulation of human hands has a variety of applications including gesture recognition, robotics, medicine and health care, design and manufacturing, art and entertainment across multiple domains. However, it is an equally complex and challenging task due to several factors like higher dimensional data from hand motion, higher speed of operation, self-occlusion, etc. This paper puts forth a novel method for tracking the finger tips of human hand using two distinct sensors and combining their data by sensor fusion technique.</span>
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Brignardello-Petersen, Romina. "Patients with severe bone resorption seem to be more satisfied with lingualized occlusion than with fully bilateral balanced articulation." Journal of the American Dental Association 148, no. 4 (April 2017): e15. http://dx.doi.org/10.1016/j.adaj.2016.12.013.
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Shopova, Dobromira, Tanya Bozhkova, Svetlana Yordanova, and Miroslava Yordanova. "Case Report: Digital analysis of occlusion with T-Scan Novus in occlusal splint treatment for a patient with bruxism." F1000Research 10 (September 13, 2021): 915. http://dx.doi.org/10.12688/f1000research.72951.1.
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Bruxism is a disease with a multifactorial etiology. Its clinical manifestations are most often an unaesthetic smile with abraded tooth surfaces, temporomandibular disorders and muscle hyperactivity. Here we present a case of bruxism where proper articulation of the occlusal splint was performed using the T-scan Novus system. A patient with bruxism underwent treatment with stabilization splint made by 3D printer technology. Intraoral scanning was performed using Trios Color (3Shape), and the digital design was achieved using the 3Shape Dental system design - splint studio. Formlabs Form 2 printer with biocompatible resin Dental LT Clear Resin was used for printing. The T-Scan Novus system with software attached to it, version 9.1, was used for digital examination of the occlusion. A 2.7 mm thick occlusal splint was developed, and the software adapted the occlusion with antagonists. After adjustment with T-Scan Novus, a reduction in disocclusion time of the patient was achieved, which is a desired result in the treatment of bruxism. The position of the joint components was proven radiologically. The treatment of bruxism with splint therapy continues to be the main method of treatment. Using digital technology allows for more accurate constructions and precise balancing of occlusal relationships.
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Habar, Ike Damayanti. "Perbaikan estetik gigi anterior yang protrusi dengan gigitiruan imidiat yang disertai dengan alveolektomi interseptal." Journal of Dentomaxillofacial Science 9, no. 1 (April 30, 2010): 21. http://dx.doi.org/10.15562/jdmfs.v9i1.228.
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Generally, the treatment of immediate partial denture has the objective of enhancingthe aesthetics of the condition and position of protrusive anterior teeth that wouldimprove the appearance. Case study was carried out on 16-years-old female patientwith overjet far from normal that obstruct closing of the lips. The patient’s profilelooks convex with the labial maxilla protrudes and a clear undercut in anteriorregion. The diagnosis of patient was dentoalveolar protrusion along with multiplediastema, malocclusion class II division I of skeletal relation that caused by localizedaggressive periodontitis. The treatment was construction of immediate partial denturewith immediate extraction of maxillary anterior teeth accompanied with interseptalalveolectomy. Control was done 24 hours, three days, and seven days after insertion.Aesthetics, occlusion, articulation, retention dan stabilization looked very good.
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Chatzistavrou, Evangelia, and Georgios Andreadis. "Noonan Syndrome in 12 -Year-Old Male: Case Report and Orthodontic Management of the Occlusion." Balkan Journal of Dental Medicine 24, no. 2 (July 1, 2020): 118–26. http://dx.doi.org/10.2478/bjdm-2020-0020.
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SummaryBackground/Aim: Noonan syndrome (NS) is an autosomal dominant disorder, caused by mutations on genes located on the long arm of chromosome 12. The condition has no sex or race predilection and its incidence is 1 per 1,000 – 2,500 live births. Individuals affected with Noonan syndrome have distinctive facial features, hypertelorism, short stature, congenital heart disease; mainly pulmonary stenosis and hypertrophic cardiomyopathy, chest deformities, variable learning disabilities and mental retardation. Orofacial findings in Noonan syndrome may be high-arched palate, micrognathia, dental malocclusion and articulation difficulties.Case report: The present article reports on a male case of 12 years old, referred for treatment in the orthodontic office. Despite the difficulties of hyperactivity, the light mental delay and the gag reflex, the treatment was completed satisfactorily with fixed orthodontic appliances in 15 months. Both the patient and his parents were happy with the results. The patient is presently undergoing the retention period of this orthodontic treatment.Conclusions: Despite the difficulties of treating a child with a genetic syndrome for his/her malocclusion, the reported case presented in this article proves that it is always worth trying for the benefit of the patient.
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Laughlin, Fiona Mc. "Voiceless implosives in Seereer-Siin." Journal of the International Phonetic Association 35, no. 2 (December 2005): 201–14. http://dx.doi.org/10.1017/s0025100305002215.
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This paper provides articulatory and acoustic data on voiceless implosive stops in Seereer-Siin, an Atlantic language of the Niger-Congo family spoken in Senegal. Seereer is characterized by pairs of voiced and voiceless implosive stops in three places of articulation. These pairs are phonemically contrastive in lexical items. Oral air pressure measurements from Seereer stops uphold Clements & Osu's (2002) proposal that implosives and other non-explosive stops are characterized by the absence of positive oral air pressure rather than the presence of negative oral air pressure during occlusion. Acoustic data show that voiceless implosives are characterized by a short period of silence ranging from approximately twenty to fifty milliseconds before the onset of prevoicing prior to release. These findings replicate to a certain extent those of Faye & Dijkstra (1997).
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Ferreira, Cimara Fortes, Abraão Moratelli Prado, Maurício Assunção Pereira, and Antônio Carlos Cardoso. "The Value of Occlusion in Dentistry: A Clinical Report Showing the Correction of an Anterior Reverse Articulation with Selective Occlusal Adjustment." Journal of Prosthodontics 25, no. 5 (July 27, 2015): 407–10. http://dx.doi.org/10.1111/jopr.12323.
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Mattoo, Khurshid A., Abdulmajeed S. Okshah, Ahid A. Al-Shahrani, Abdulkhaliq Ali F. Alshadidi, Fawzia I. Shaabi, and Abdulaziz H. Mobark. "Prevalence and Severity of Temporomandibular Disorders among Undergraduate Medical Students in Association with Khat Chewing." Journal of Contemporary Dental Practice 18, no. 1 (January 2017): 23–28. http://dx.doi.org/10.5005/jp-journals-10024-1982.
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ABSTRACT Introduction The aim of this study was to assess the prevalence and severity of temporomandibular joint disorders (TMDs) among undergraduate medical students in the presence of khat chewing over a period of time. Materials and methods Totally, 186 medical college students (age ≤ 20 years) were randomly selected for the present study. The study subjects were divided into two groups according to age, under 20 and above 20 years. The study was based on Fonseca's anamnestic index and its questionnaire, which is composed of 10 questions and classifies the severity of TMDs. The obtained data were coded and entered into Statistical Package for the Social Sciences (SPSS) program for analysis using chi-square test at significance level of 5%. Results Most of the participants were male (68.8%) students and older than 20 years (63%). Those who reported with khat chewing comprised 31.7%. From the total samples, only 38.0% was classified as having mild TMD and 0.50% were classified as having severe TMD. Poor dental articulation, grinding of teeth, headaches, tense personalities, and temporomandibular joint (TMJ) clicking were the most common clinical findings. The mean scores showed no significant difference among gender (p ≤ 0.29) and the khat chewing (p ≤ 0.531) groups for the 10 questions. However, it showed significant difference among age groups (p ≤ 0.025). Conclusion The majority of subjects complained of mild TMD, while only a few cases showed a moderate TMD among different age groups. The most frequently reported dysfunctions were related to poor dental articulation and grinding of the teeth, frequent headaches, the clicking of joint, and tense personalities. No significant difference was found between gender and khat and nonkhat chewing groups. Clinical significance Khat chewing is a parafunctional habit and affects dental occlusion (especially cuspal wear) in terms of anterior guidance. Such alterations in occlusion are known to be one of the causative (predisposing) factors of TMD. How to cite this article Al Moaleem MM, Okshah AS, Al-Shahrani AA, Alshadidi AAF, Shaabi FI, Mobark AH, Mattoo KA. Prevalence and Severity of Temporomandibular Disorders among Undergraduate Medical Students in Association with Khat Chewing. J Contemp Dent Pract 2017;18(1):23-28.
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Olesov, E. E., T. N. Novozemtseva, V. E. Tikhonov, V. N. Olesova, and O. S. Kaganova. "Ceramic crown inlays as alternative to substitute defects of side teeth with light-conforming composites." Journal of Clinical Practice 9, no. 1 (December 25, 2018): 23–27. http://dx.doi.org/10.17816/clinpract09123-27.
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A clinical and functional examination of the maxillofacial area was performed in 280 patients with the defects of the lateral teeth being replaced with ceramic crown inlays or light-cured composites three years ago. Computer methods were used to assess the articulation, occlusion and tone of the masticatory muscles on the T-Scan III and Bio EMG III devices. In a third of the lateral teeth, an unreasonable increase in indications to composite fillings has been established – when more than 50.0% of the occlusal surface is destroyed. Indicators of dental status are significantly better when using ceram- ic inlays compared with fillings made of composite material in the long term after treatment of multiple caries. Ceramic crown inlays prevent occlusal-articulatory disorders and dysfunction of the masticatory apparatus, characteristic in long-term periods for patients with multiple caries when replacement of lateral teeth defects with fillings made of composite.
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Ullah, Mohib, Maqsood Mahmud, Habib Ullah, Kashif Ahmad, Ali Shariq Imran, and Faouzi Alaya Cheikh. "HEAD BASED TRACKING." Electronic Imaging 2020, no. 6 (January 26, 2020): 74–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.6.iriacv-072.
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For tracking multiple targets in a scene, the most common approach is to represent the target in a bounding box and track the whole box as a single entity. However, in the case of humans, the body goes through complex articulation and occlusion that severely deteriorate the tracking performance. In this paper, we argue that instead of tracking the whole body of a target, if we focus on a relatively rigid body organ, better tracking results can be achieved. Based on this assumption, we followed the tracking-by-detection paradigm and generated the target hypothesis of only the spatial locations of heads in every frame. After the localization of head location, a constant velocity motion model is used for the temporal evolution of the targets in the visual scene. For associating the targets in the consecutive frames, combinatorial optimization is used that associates the corresponding targets in a greedy fashion. Qualitative results are evaluated on four challenging video surveillance dataset and promising results has been achieved.
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Zhou, Lu, Yingying Chen, Jinqiao Wang, and Hanqing Lu. "Progressive Bi-C3D Pose Grammar for Human Pose Estimation." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 07 (April 3, 2020): 13033–40. http://dx.doi.org/10.1609/aaai.v34i07.7004.
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In this paper, we propose a progressive pose grammar network learned with Bi-C3D (Bidirectional Convolutional 3D) for human pose estimation. Exploiting the dependencies among the human body parts proves effective in solving the problems such as complex articulation, occlusion and so on. Therefore, we propose two articulated grammars learned with Bi-C3D to build the relationships of the human joints and exploit the contextual information of human body structure. Firstly, a local multi-scale Bi-C3D kinematics grammar is proposed to promote the message passing process among the locally related joints. The multi-scale kinematics grammar excavates different levels human context learned by the network. Moreover, a global sequential grammar is put forward to capture the long-range dependencies among the human body joints. The whole procedure can be regarded as a local-global progressive refinement process. Without bells and whistles, our method achieves competitive performance on both MPII and LSP benchmarks compared with previous methods, which confirms the feasibility and effectiveness of C3D in information interactions.
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Dixit, Ashutosh, Ridhima Birmani Gaunkar, Varun Arora, Seema K. Dixit, Narendra Kumar Gupta, Pratik Chandra, and Bhaskar Agarwal. "Comment on “Computed Tomography Evaluation of Craniomandibular Articulation in Class II Division 1 Malocclusion and Class I Normal Occlusion Subjects in North Indian Population”." ISRN Dentistry 2013 (May 8, 2013): 1–2. http://dx.doi.org/10.1155/2013/932701.
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Clear statement of objective, appropriate location of landmarks and removal of subjective bias in measurement is essential in all kinds of research, especially, orthodontics. The research design should be rationalistic, purposeful, and in accordance with the objectives of the study. In this communication, we highlight the errors in research design, measurement, analysis, and inferences drawn with the help of a published article as the primary source to explain these simple but useful points.
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D., Krishna Prasad, B. Rajendra Prasad, and Anupama Prasad D. "A Study to Relate Sagittal Condylar Path and Horizontal Incisal Path with Bilateral Balanced Occlusion in Edentulous Subjects." Journal of Health and Allied Sciences NU 10, no. 01 (April 2020): 31–41. http://dx.doi.org/10.1055/s-0040-1710705.
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Abstract Introduction Bilateral balanced occlusion is achieved when there is equilibrium on both sides of the prosthesis, due to the simultaneous contact of the artificial teeth in centric and eccentric occlusion. One of the areas in which research is lacking is the relation between sagittal condylar path (CP) and horizontal incisal path (IP) with optimal balanced occlusion. Materials and Methods Semiadjustable Articulator Artex Arcon AP with Rotofix facebow, 40 µ Bosch articulating paper of red and blue color, protractor, centric and protrusive interocclusal plaster records were used for the study on 50 completely edentulous subjects. Teeth arrangement was done with optimal balanced occlusion, and the numbers of contacts were recorded in centric relation and eccentric positions. Statistical analysis was done by using student’s t test and Karl Pearson coefficient correlation. Results The average sagittal CP was 30.38° in the age group of 40 to 55 years and 32.58° in the age group of 56 to 70 years, and the average horizontal IP was 15.79° in the age group of 40 to 55 years and 16.04° in the age group of 56 to 70 years.Statistically significant results were found between sagittal CP, horizontal IP with bilateral balanced occlusion in the age group of 40–55 years. Conclusion Statistically significant relations were found in balanced occlusion between waxed up denture on articulator, processed denture on articulator and processed denture on articulator after selective grinding. Balanced occlusion is more predictable in a younger group of individuals.
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Suda, Naoto, Sachiko Handa, Norihisa Higashihori, Takuya Ogawa, Michiko Tsuji, and Kimie Ohyama. "Orthodontic Treatment of a Patient with Stickler Syndrome." Angle Orthodontist 77, no. 5 (September 1, 2007): 931–39. http://dx.doi.org/10.2319/082406-347.
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Abstract Stickler syndrome (MIM 108300, 604841, 184840) is an autosomal dominant disease characterized by midfacial flattening and variable disorders of vision, hearing and articulation. There are three types of the syndrome caused by mutations in different genes (type 1, COL2A1; type 2, COL11A1; and type 3, COL11A2). About 20% of type 1 patients have cleft palate or bifid uvula, but there have been no case reports of orthodontic treatment of this syndrome so far. The Japanese female patient presented here with Stickler syndrome was characterized by a flat midface and had high myopia, sensorineural hearing loss, enlarged joints, and cleft of the soft palate. She had fairly small SNA and SNB angles and a steep mandibular plane with an enlarged gonial angle. The incisors of both arches were retroclined, and a large overjet and overbite were noted. Orthodontic treatment was initiated at 11 years of age using a lingual arch appliance followed by an edgewise multibracket appliance. Stable functional occlusion was obtained after the treatment. Most of the other seven Stickler syndrome patients exhibited pretreatment characteristics of small SNA and SNB angles, steep mandibular planes, enlarged gonial angles, and retroclined incisors of both arches, demonstrating the characteristic skeletal and occlusal features of this syndrome.
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Rosenthal, Eric, Shakeel A. Qureshi, A. Hussein Tabatabaie, Deo Persaud, Ashok P. Kakadekar, Edward J. Baker, and Michael Tynan. "Stent characteristics for preservation of patency of the arterial duct—experimental evaluation." Cardiology in the Young 5, no. 4 (October 1995): 331–37. http://dx.doi.org/10.1017/s1047951100002791.
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SummaryIn neonates with duct-dependent congenital heart defects, a reliable non-pharmacological, non-surgical method of maintaining flow through the arterial duct may simplify the management. Stent implantation into the arterial duct has been proposed as such a method. In order to evaluate the technical difficulties which may accompany clinical application, stent implantation into the arterial duct was attempted in 32 newborn lambs aged two to nine days (mean 4.2±1.4) weighing 2.4–7.3 kg (mean 4.6±1.0). Four different types of stent were implanted and the ease of implantation and outcomes were assessed. Stent implantation was technically successful in 28 of the 32 lambs (88%). Of these, 11 lambs died shortly after stent implantation with patent ducts, five lambs had early occlusion of the duct and 12 lambs were entered into a long-term study. The Gianturco-Roubin stent was too rigid and too long to enable successful implantation. The Palmaz-Schatz stent was poorly radio-opaque and was difficult to place accurately. When the aortic orifice was not completely covered, the duct occluded within a few days of implantation. The articulation gap also allowed duct tissue to prolapse into the middle of the stent. The Medinvent and Tower stents were simpler to position due to their superior radio-opacity. The Tower stent had an additional advantage in being a single strand stent which could be easily retrieved if misplaced.
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Fernandes, M., U. Ervilha, L. Maifrino, A. Bartkevicius, and M. Santos. "Temporomandibular disorders in cerebral palsy: literature review." Journal of Morphological Sciences 32, no. 02 (April 2015): 104–7. http://dx.doi.org/10.4322/jms.087815.
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Abstract Introduction: In cerebral palsy the greater neurologically compromised patients have the highest functional involvement of the masticatory system and the highest structural involvement of the temporomandibular joint (TMJ). These conditions contribute to the likelihood of the onset of articular and muscular disorders. These disorders affect the orofacial region and can cause pain, audible noise upon articulation, irregular mandibular functions with deviations, known as Temporomandibular Joint Dysfunctions (TMD). Traditionally, clinical studies have been limited to articular restrictions in detriment to the various neurological and motor clinical aspects. The objective of this research is to examine studies which investigated the prevalence of TMD signs in cerebral palsy, as well as studies about several aspects of the pathology surrounding TMD, including functional, structural, neurological, and clinical aspects. Materials and Methods: We carried out literature review of several studies published between 1976 and 2014. Scielo, MEDLINE, PubMed, EMBASE, CINAHL, DARE, Psych Info, ERIC, AMI, Cochrane, and PEDro databases were used to research literature on TMD using the following keywords without restrictions: cerebral palsy, temporomandibular disorders, and rehabilitation. Results: The literature showed that signs of TMD in cerebral palsy may be prevalent in severe clinical forms which can make cervical control more difficult and lead to postural deviations. Conclusion: Craniometric changes in head circunference may limit TMJ and occlusion movements, worsened by hypertonia and asymmetry in the pterygoid and masseter muscles. Children with swallowing and oropharyngeal dificulties are more likely to show signs of TMD.
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Vovk, Viktorija. "IDENTIFICATION OF SPECIFIC CEPHALOMETRIC MARKS IN PATIENTS WITH LATERAL CONDYLAR POSITION TEMPOROMANDIBULAR JOINT." World Science, no. 9(61) (January 1, 2021): 1–6. http://dx.doi.org/10.31435/rsglobal_ws/30122020/7281.
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Relevance. Temporomandibular joint dysfunction is one of the most widely spread and common disease nowadays. It includes disorders on different levels of whole body and multi symptom as clinical manifestation. There is still less of evidence in ethiopathology of Temporomandibular dysfunction(TMD).Objective. The research aimed to find new etiological factors impacting the formation of TMJ, recorded growth and developmental disorders of the facial skull in the experimental group. Materials and methods. The sample group consisted of 59 patients. The experimental group included 38 patients with lateral joint displacement; the control group included 21 patients. Subjects were examined with functional probes, occlusion diagnosis with articulation paper Baush 200,100,8 microns, cephalometryc analysis by Grummons, computed tomography of temporomandibular joint, licensed software application Planmeca Romexis Viewer, statistical analyses with program IBM SPSS Statistic Base v.22.Results. 91.6% of patients with dentofacial deformities of the maxilla (ddm) also have TMJ with lateral displacement of the articular heads of the mandible. Patients without maxillary dentofacial deformities experience lateral displacement of the articular heads with a frequency of 8.7% and probable risk of 10.5 (95% CI 2.79-39.8). Patients in 1group (63,16%) experiences asymmetric inclination of the angles of the right and left upper jaw and occlusal plane around tooth number 6 and 7, 79.94% of patients in the experimental group recorded a displacement of the mandible <89 ° dental deformity. There is a specifically, ramifications of the pathological factors via rotational, simultaneous, one-sided, and three-level move with a delay in the horizontal growth of the dental apparatus.
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Meerschman, Iris, Kristiane Van Lierde, Yvonne Gonzales Redman, Lidia Becker, Ayla Benoy, Imke Kissel, Clara Leyns, Julie Daelman, and Evelien D'haeseleer. "Immediate Effects of a Semi-Occluded Water Resistance Ventilation Mask on Objective and Subjective Vocal Outcomes in Musical Theater Students." Journal of Speech, Language, and Hearing Research 63, no. 3 (March 23, 2020): 661–73. http://dx.doi.org/10.1044/2019_jslhr-19-00042.
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Background Traditional semi-occluded vocal tract exercises (SOVTEs) are restricted to single-phoneme tasks due to the semi-occlusion at the mouth, which hinders full articulation, continuous speech, and singing. Innovative SOVTEs should overcome this limitation by creating the semi-occlusion outside the oral cavity. Purpose The purpose of this study was to investigate the immediate effects of a semi-occluded water resistance ventilation mask, which allows for continuous speech and singing, on objective (voice range, multiparametric voice quality indices) and subjective (auditory-perceptual, self-report) vocal outcomes in musical theater students. Method A pre-/posttest randomized controlled trial was used. Twenty-four musical theater students (16 women and eight men, with a mean age of 21 years) were randomly assigned into a study group and a control group. The study group received a vocal warm-up session with the innovative water resistance ventilation mask (tube attached to the mask “outside” the mouth), whereas the control group received the traditional water resistance approach (tube “inside” the mouth). Both sessions lasted 30 min and were similar with respect to vocal demand tasks. A multidimensional voice assessment including objective and subjective outcomes was performed pre- and posttraining by an assessor blinded to group allocation. Results The Dysphonia Severity Index significantly and similarly increased (improved) in both the study and control groups, whereas the Acoustic Voice Quality Index solely decreased (improved) in the control group. The intensity range significantly decreased (worsened) and the semitone range significantly increased (improved) in the study group, whereas no differences in voice range profile were found in the control group. Auditory-perceptually, a more strenuous speaking voice was noticed after the use of the traditional water resistance approach. The subjects perceived both SOVTEs as comfortable vocal warm-up exercises that decrease the amount of effort during speaking and singing, with a slight preference for the water resistance ventilation mask. Conclusions Both the innovative water resistance ventilation mask and the traditional water resistance exercise seem effective vocal warm-up exercises for musical theater students. The additional articulatory freedom of the mask might increase the phonatory comfort and the practical implementation of SOVTEs in the daily vocal warm-up of (future) elite vocal performers. The hypothesis of a higher transfer to continuous speech or singing in the mask condition has not been supported by the current study. Larger scale investigation and longer term follow-up studies are needed to confirm these preliminary results. Supplemental Material https://doi.org/10.23641/asha.11991549
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Korunoska-Stevkovska, Vesna, Ljuben Guguvcevski, Zaklina Menceva, Nikola Gigovski, Aneta Nikola Mijoska, Julijana Nikolovska, and Emilija Bajraktarova-Valjakova. "Prosthodontic Rehabilitation of Patient with Anterior Hyper Function Syndrome." Open Access Macedonian Journal of Medical Sciences 5, no. 7 (December 5, 2017): 1000–1004. http://dx.doi.org/10.3889/oamjms.2017.208.
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BACKGROUND: The success of prosthetic rehabilitation in patients with removable dentures depends on the achievement of the aesthetics, phonetics and most of all, proper use in the mastication process. All the patients that receive removable prostheses need a feeding education program. They must cut the food into smaller pieces, extend the length of time necessary for chewing and place the food upon both the right and left sides of the mouth at once. Bilaterally chewing with dentures will contribute to increased efficiency and denture stability during mastication. Using the anterior teeth for biting, as a result of increased pressure on the anterior ridge may lead to the anterior hyperfunction syndrome.CASE REPORT: The patient requested dental rehabilitation in our clinic for prosthetic dentistry two and a half years ago. We examined him and made therapy plan, for complete removable maxillary denture and partial mandibular denture. Besides our instructions for proper use of dentures and necessity for regular controls, his next visit was after two and a half years. He came with enlarged tuberosity and papillary hyperplasia in the pre-maxillary region. After oral surgery treatment (laser removing of hyperplastic tissue) and a healing period of four weeks, we made indirect relining on the upper denture, re-occlusion and re-articulation achieving weak contacts between the lower natural teeth and upper teeth of the complete denture. The patient was advised not to bite food with his anterior teeth, and avoid chewing very hard food which tends to imprint and displace dentures.CONCLUSION: Anterior hyperfunction syndrome with its high incidence is a disease with the need of interdisciplinary therapy approach. Fast diagnosis, thorough clinical examination using all available diagnostic tools, and choosing the right treatment is very challenging.
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Myagkova, Natalia, Nikolay Styazhkin, and Oksana Demina. "RESULTS OF THE DETERMINING THE SEVERITY OF SYMPTOMS OF MUSCULOSKELETAL DYSFUNCTION IN PATIENTS WITH DENTOALVEOLAR ANOMALY USING THE M. HELKIMO METHOD." Actual problems in dentistry 16, no. 3 (November 5, 2020): 123–30. http://dx.doi.org/10.18481/2077-7566-2020-16-3-123-130.
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Subject. Temporomandibular joint dysfunction is a broad term used for a large number of disorders affecting the temporomandibular joint and masseter muscles. Clinical methods for assessing the state of the temporomandibular joint and masticatory muscles are subjective and do not fully assess the degree of impairment. In this regard, M. Helkimo in 1976 proposed an index of dysfunction of the temporomandibular joint to assess the severity of functional disorders, which solves the current problem of determining the degree of dysfunction of the temporomandibular joint.
The aim of the study was to assess the severity of symptoms of musculo-articular dysfunction in patients with dentoalveolar anomaly using the M. Helkimo method.
Methodology. A questionnaire was conducted among patients aged 18―44 years with dentoalveolar anomalies using a questionnaire and a clinical study was carried out according to a single protocol. According to the method, anamnestic, clinical, occlusal indices were determined, and the range of motion of the lower jaw was assessed. When examining the state of the temporomandibular joint and masticatory muscles, the presence of crunching, clicks in the joint, pain on palpation was revealed, the trajectory and range of movements of the lower jaw were determined.
Results. Our own observations and studies in this matter have shown that the most important indicators are the presence of displacement of the mandible from the posterior contact position to the central occlusion and articulation disorders, which, in turn, can serve as early precursors of the onset of temporomandibular joint dysfunction.
Conclusions. The M. Helkimo method allows the dentist to assess the degree of dysfunction of the temporomandibular joint in a patient with a dentoalveolar anomaly without using additional instrumental diagnostic methods.
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Šuljak-Lončarević, Azijada, and Muhamed Ajanović. "Osteometry of Mandibular Joint Surface." Bosnian Journal of Basic Medical Sciences 6, no. 4 (November 20, 2006): 25–28. http://dx.doi.org/10.17305/bjbms.2006.3114.
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Anatomically and functionally, temporomandibular joint (articulatio temporomandibularis) is specific, It consists of incongruent joint surface. The size of mandibular joint surface and its position in relation to facies articularis fossae mandibularis in different positions of mandibulae (central occlusion, central relation) are still subject to the interest of prosthetics. The aim of the research is measuring the lower joint surfaceby special 3D device that enables acribic precise measuring. Macerated human skulls, property of the Anatomy Institute, Faculty of Medicine, University Sarajevo, were used for the research that has been carried out. Results of measuring of articulating surface caput mandibulae along longer axis (mediolateral diameter) indicate that there are no differences in size of this surface between right and left joints. Results of measuring of articulating surface caput mandibulae along shorter axis (anteroposterior diameter) indicate differences in values of this diameter between right and left sides. Judging by statistical evaluation, differences are highly significant on the level of probability p<0.01. The research has shown differences in the size of this joint surface, on right and left sides, but only in antero-posterior direction. This original scientific work will help better of relationship of TMJ surfaces, what is necessary for treatment of TMD and occlusal imbalances.
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Flis, P. P., V. V. Filonenko, A. O. Melnyk, Y. P. Nemyrovych, and A. P. Lopoha. "ALGORITHM FOR SPEECH DISORDERS CORRECTION USING PROPRIETARY CONSTRUCTION DEVICE." Вісник наукових досліджень, no. 4 (January 31, 2019): 145–51. http://dx.doi.org/10.11603/2415-8798.2018.4.9780.
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Currently, there is a tendency in Ukraine to increase the number of children with speech disorders. One of the most common disorders of speech function is dyslalia. Speech therapists are the main form of correctional training, children are assigned certain and consistent stages of speech therapy. Along with that, various individual and standard devices are used.
The aim of the study – to conduct logopedic correction of speech disorders in patients with physiologic occlusion using the in-house designed device according to the proposed algorithm.
Materials and Methods. A survey was conducted on 73 children (24 – aged 3 to 6 years, 49 – from 6 to 12 years old) without significant orthodontic pathology in the presence of speech impairment with normal hearing and intelligence and speech correction. In addition to logopedic exercises, it was recommended to use vestibular plates Dr. Hinz - MUPPY-P with beads, removable orthodontic devices with beads, Bluegrass appliances, devices for elimination and prevention of unhealthy tongue habits. In order to identify early risk factors for major dental diseases, the hygienic state of the cavity of the mouth, the intensity of caries, the presence or absence of inflammatory processes in the tissues of periodontal disease were determined.
Results and Discussion. The first step in the algorithm for successful correction of speech disorders were to explain its necessity. The second stage involved the phonetic diagnosis of all aspects of speech, logic, intelligence, memory and thinking. Polymorphic dyslalia was diagnosed in all subjects of reporting panel. The third stage of the algorithm is to carry out work to overcome the abnormalities of the phonetic side of speech was a direct speech correction. The proposed device for elimination and prevention of unhealthy tongue habits was used in 6 cases.
Conclusions. After the speech therapy correction correct articulation and sound were formed. The proposed device for the elimination and prevention unhealthy tongue habits should be used in conjunction with speech therapy, in particular, dyslalia. In addition to the positive logopedic effect of the proposed therapeutic and prophylactic measures, we have also received improvement of the hygienic state of the oral cavity, the absence of an increase in the intensity of the caries of permanent teeth and increased motivation in patients.
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Bozhkova, Tanya, Nina Musurlieva, and Diyan Slavchev. "Comparative Study Qualitative and Quantitative Techniques in the Study of Occlusion." BioMed Research International 2021 (September 23, 2021): 1–9. http://dx.doi.org/10.1155/2021/1163874.
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Introduction. The wide variety of methods for recording occlusal contacts and the contradictory data on the interpretation of the obtained markings provoked us to make a comparative laboratory study between different occlusal indicators. Purpose. Evaluation of a qualitative and quantitative method for registration of occlusal contacts in static occlusion in laboratory conditions. Materials and Methods. In completion of the objective, we designed an apparatus for registration of the occlusal contacts (AROC) in static occlusion which is used, corresponding to the MIP in clinical conditions. The occlusal indicators that were included in the study were articulating paper 100 μ, articulating foil 12 μ, and T-Scan Novus system with a sensor thickness of 100 μ. The collected primary statistical information was entered and processed with the statistical package SPSS Statistics 19.0, and the graphs were prepared using Microsoft Office 2019. We performed descriptive statistical analysis in this study. Comparisons were performed using one-way analysis of variance (ANOVA), Student’s t -test, and Pearson coefficient method. For a significance level, p < 0.05 was chosen. Result and Discussion. With quality occlusal indicators, it is possible only to visually determine the size, number, and intensity of the marked contacts. After the statistical processing of the obtained data on the number of registered contacts, a significant difference is found in the number of contacts of certain teeth (18, 24, 25, 28, 38, 35, 34, 33, 44, 45, and 48) registered with articulating paper and articulating foil. The maximum force that is reported during the study with the T-Scan system is 93.72% and the forces in the right half of the dentition are 51.7% and in the left 48.9%. To visualize the location of the registered occlusal contacts with the system, it is intraoral to use a quality indicator and we recommend the use of articulating foil. Conclusion. Based on findings from the current in vitro simulation, we can conclude that the type of occlusal indicator influences the registration of contacts, and therefore, we propose as a method of choice to achieve a balanced occlusion in clinical practice to combine the use of one conventional and one quantitative method.
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Parnia, Fereidoun, Elnaz Moslehifard, Negar Motayagheni, and Alireza Pournasrollah. "A Time-saving method for Transferring Occlusal Vertical Dimension and Centric Relation of Complete Denture to a Full Arch Implant Prosthesis." Journal of Contemporary Dental Practice 15, no. 5 (2014): 672–75. http://dx.doi.org/10.5005/jp-journals-10024-1597.
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ABSTRACT Aim This clinical report describes a time-saving recording procedure for implant prosthesis. Background In implant prosthodontics, a few procedures have been suggested to record jaw relationships. Record bases with occlusion rims supported by healing abutments, or screw retained bases are the conventional methods used for mounting definitive implant casts in the articulator. Technique This article describes a simple method that enables the clinician to transfer the existing occlusal vertical dimension (OVD) and centric relation (CR) of acceptable complete denture to final fixed prostheses. Advantages and disadvantages of this procedure are also discussed. Conclusion The method described in this article reduces the chair time and is comfortable for both the patient and clinician. Clinical significance In this article, a chair side technique is presented for articulating the definitive implant casts that maintains the established OVD and CR of the patient's existing complete dentures. How to cite this article Parnia F, Moslehifard E, Motayagheni N, Pournasrollah A. A Time-saving method for Transferring Occlusal Vertical Dimension and Centric Relation of Complete Denture to a Full Arch Implant Prosthesis. J Contemp Dent Pract 2014;15(5):672-675.
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Didenko, Natalya, Arcady Vyazmin, Evgeniy Mokrenko, Vladimir Gazinskiy, Maria Suslikova, Marina Darenskaya, Victoria Andreeva, Daniil Aksnes, and Marina Gubina. "Relationship between the Types of Malocclusion and the Localization of Headaches in Adults." International Journal of Biomedicine 11, no. 2 (June 5, 2021): 197–200. http://dx.doi.org/10.21103/article11(2)_oa12.
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The aim of this study was to investigate the manifestations of headaches in adult patients with types of malocclusion and occlusion deformities. Methods and Results: The study was conducted in 171 adult patients (43 men and 128 women) with malocclusion and occlusion deformities at the age of 18 to 62 years old, who were examined in the orthopedic dentistry clinic. The nature of the dentition closing was studied directly in the patient's oral cavity, and with the help of the "Gnatomat" universal articulator on diagnostic plaster models of the jaws. The occlusal relationships of the teeth were analyzed in the position of the central, anterior, lateral and dynamic occlusions. The biomechanics of the lower jaw movements were studied in 3 mutually perpendicular directions. The detected anomalies and deformities of the occlusion were grouped as sagittal, transversal and vertical. Each group was diagnosed as independent forms of malocclusion, and combined with other anomalies and deformities of the dentoalveolar system. All the subjects were asked to answer the questions of a questionnaire specially developed for our study. The unified questionnaire was developed based on a modified rating questionnaire and the determination of the life disorders index in neck pain. The questionnaire includes blocks of questions aimed at identifying the localization of the headache in the temporal, parietal (in one or both) regions, occipital, frontal regions and in the longitudinal seam region. We identified complaints of patients with pain in adjacent regions of the head. Of the 171 examined adult patients with malocclusion and occlusion deformities, 99 (57.9%) complained of headaches. The presence of a headache in the parietal region of the head was associated most often with sagittal and transversal malocclusions. The presence of a headache in the temporal part of the head was associated often with vertical malocclusion The results of correlation analysis showed that pain in 2 regions of the head was associated with malocclusion: the temporal region (rb=0.9892, P=0.0013) and parietal region (rb=0.9712, P=0.0058). Other regions were not statistically significantly associated with malocclusion. Conclusion: There is a certain relationship between the types of malocclusion, occlusion deformities and localization of headaches in adults. Headaches in the parietal and temporal regions of the head are associated with malocclusion and occlusion deformities more often. The obtained data can serve as a basis for the development of recommendations for appropriate corrective measures in orthodontic practice.
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Almăşan, Oana, Smaranda Buduru, Simona Iacob, Andreea Chisnoiu, Loredana Miţaru, Mihai Miţaru, Maria Simona Dămăşaru, Irina Grecu Mareşal, and Marius Negucioiu. "CONTACT POINTS DISTRIBUTION ACCORDING TO THE ARTICULATOR TYPE: SEMIADJUSTABLE VERSUS NON ADAPTABLE VERSUS DIGITAL." Romanian Journal of Stomatology 67, no. 2 (June 30, 2021): 112–19. http://dx.doi.org/10.37897/rjs.2021.2.9.
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Objectives. To analyze the location and intensity of occlusal contact points using three types of articulators: non adjustable, semiadjustable and digital with aiming at improving the diagnostic and treatment options in dental medicine. Material and method. For analyzing the distribution of contact points, the casts of a patient were mounted in the non adjustable and semiadjustable articulator. Intraoral scanning was performed using an intraoral scanner (Trios 3Shape) and reviewed in a virtual articulator. Occlusion obtained by the three methods was compared to the clinical situation. Results. Contact points in maximum intercuspation, propulsion and lateral movements were analyzed. The points obtained by using the non adjustable articulator have been less intense and more unprecise. By digitizing the contact points, the image becomes more accurate and sharp. Discussion. The semiadjustable articulator reproduces the contact points which are consistent with the clinical situation. Major differences occur when using the non adjustable articulator, which has a limited capacity of reproducing the clinical movements, therefore the marks are non consistent with the real clinical situation. The digital articulator seems promising in terms of eccentric movements. Conclusions. However performing an articulator may be, the clinical maximum intercuspation will never be fittingly reproduced, due to the fact that articulators are rigid systems, whereas the oral cavity has an elasticity, resulting from the mandible, teeth and periodontal ligaments. Virtual articulators need to be further developed for more accurate results.
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Henriksen, Nicholas. "Sociophonetic analysis of phonemic trill variation in two sub-varieties of Peninsular Spanish." Journal of Linguistic Geography 2, no. 1 (March 2014): 4–24. http://dx.doi.org/10.1017/jlg.2014.1.
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In this paper we provide a preliminary characterization of the phonemic trill (i.e., /r/) as produced by twenty-four speakers of northern and central Peninsular Spanish. The acoustic analysis revealed a considerable number of non-canonical variants containing one or zero apical occlusions. The quantitative results showed robust effects of the following three factors on trill articulation: Speaker dialect, gender, and preceding vowel. Regarding social factors, central Peninsular speakers and male speakers showed the greatest propensity to produce fewer occlusions per phonemic trill. Regarding linguistic factors, non-canonical variants were especially common in contexts of preceding /u/; we interpret this result on articulatory grounds given the antagonistic gestures required for the trill and the high back vowel. All in all, these findings offer empirical support that geographically-oriented studies within a sociophonetic framework offer critical information on the diachrony of trill consonants.
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Chirilă, Oana Cristina, Alexandru Eugen Petre, and Mihaela Rodica Păuna. "The role of virtual articulators in dental occlusion analysis." Romanian Journal of Stomatology 63, no. 1 (March 31, 2017): 28–32. http://dx.doi.org/10.37897/rjs.2017.1.5.
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Today, virtual reality has a broad spectrum of applications in fields as diverse as architecture, sports, arts or medicine. One of the applications of virtual reality in medicine is the virtual articulator, a digital instrument that was designed as a tool for comprehensive analysis of static and dynamic occlusal relations, the purpose being to substitute the use of mechanical articulators and consequently, of the mechanical errors involved by their use. This paper is a systematic review of the literature on published studies about the functionality and application of the virtual articulators in the analysis of dental occlusion. An electronic search was conducted based on a combination of keywords, using the search engines of Pubmed/Medline and ScienceDirect. Most of the identified studies show that the reproduction of occlusal contacts using virtual articulators has superior, or at least similar, fidelity compared to the conventional techniques, both in static or dynamic manners.
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Buduru, Smaranda, Anca Mesaros, Daniel Talmaceanu, Oana Baru, Raul Ghiurca, and Raluca Cosgarea. "Occlusion in the digital era: a report on 3 cases." Medicine and Pharmacy Reports 92 (December 13, 2019): S78—S84. http://dx.doi.org/10.15386/mpr-1524.
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In the following case studies we wish to discuss the necessity of making use of digital technology in the occlusion-oriented dental practice. In the three presented cases, patients underwent complex orthodontic, implant and prosthetic treatment, the aim being to re-establish the functionality of the dento-maxillary apparatus. The patients were evaluated clinically at the completion of the treatment. Subsequently, during the follow-ups (which varied between 2 and 4 years), clinical analysis using articulating paper was carried out and possible signs of relapse were specifically searched for. Occlusal clinical analysis was later on compared with the occlusion recorded using the TRIOS® 3 intraoral scanner (3Shape) and the T-Scan™ Novus™ device (TekScan). Clinical and digitally obtained scanner results were similar. The results yielded by the T-Scan™ Novus™ device were different and they were also relevant for elucidating the cause of the symptomatology.
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Kordaß, B., and Ch Gärtner. "The virtual articulator—concept and development of VR-tools to analyse the dysfunction of dental occlusion." International Congress Series 1230 (June 2001): 689–94. http://dx.doi.org/10.1016/s0531-5131(01)00112-1.
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Costea, Carmen Maria, Mîndra Eugenia Badea, Sorin Vasilache, and Michaela Mesaroș. "Effects of CO-CR Discrepancy in Daily Orthodontic Treatment Planning." Medicine and Pharmacy Reports 89, no. 2 (April 21, 2016): 279–86. http://dx.doi.org/10.15386/cjmed-538.
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Background and aims. Nowadays centric relation is defined as a musculoskeletal stable position, with the condyles forward, as far upward as possible, centered transversely and with the articular disc properly interposed. On the other hand, centric occlusion or maximum intercuspidation is a dental determined position. The purpose of this pilot study is to evaluate the direction, frequency and magnitude of the discrepancy between centric occlusion and centric relation in all three axial directions, in a muscular non-deprogrammed population, before the beginning of orthodontic treatment.Methods. The study group was represented by 40 symptomatic and asymptomatic patients seeking orthodontic treatment in a private dental office in Cluj-Napoca, Romania between 2014 and 2015. All patients had full records and articulator mounted models. All measurements were analyzed three-dimensionally.Results. 85% of the patients had vertical and 87.5% had horizontal CO-CR discrepancy for both condyles. 87.5% of the cases have had a significant condylar displacement in at least one of the three planes.Conclusions. We should be aware of the dental occlusion determined by the dental contacts and the occlusion dictated by the musculoskeletal stable position of the condyles. The bigger the discrepancy between these two positions at the level of the condyles, the greater the chances to have either a patient who will develop a form of TMD before/during or after the orthodontic or prosthetic treatment, or a patient suffering already, but poorly diagnosed.
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Khaybullina, R. R., L. P. Gerasimova, and N. S. Kuznetsova. "DIAGNOSIS AND TREATMENT OF PATIENTS WITH CHRONIC GENERALIZED PERIODONTITIS AND MUSCULAR-ARTICULAR DYSFUNCTION OF THE TEMPOROMANDIBULAR JOINT PAIN SYNDROME." Russian Journal of Dentistry 21, no. 4 (August 15, 2017): 200–203. http://dx.doi.org/10.18821/1728-2802-2017-21-4-200-203.
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The article is devoted to the diagnosis and treatment of patients with musculo-articular dysfunction (MSD) of the temporomandibular joint (TMJ) pain syndrome in combination with amplipulsetherapy, fluctuating and orthopedic methods. The purpose of the study - to improve the diagnosis and treatment of patients with chronic generalized periodontitis (present study included) of the DPA and TMJ, with pain, with the help of complex methods of therapy. Made clinical examinations of 98 patients of 35-45 years with MSD and TMJ pain. Identified groups of patients with present study included and MSD with displacement and without displacement of the mandible. Defined electromyographic parameters of bioelectric activity of masticatory and temporal muscles in patients with present study included and MSD. For pain syndrome all patients appointed fluctuating in the area of TMJ. Determined the effectiveness of the treatment, studied diagnostic models in articulator PROTAR (Germany), conducted an electromyography. To eliminate occlusive barriers used mouthguard during sleep. Studies have shown that the use of clear aligners in combination with orthopedic and physiotherapeutic methods is an effective method in the treatment of patients with MDS present study included pain. Okklyuzionny tires change the nature of closing the teeth, affect the periodontium, masticatory muscles and TMJ. Without dental intervention on the occlusal surface they help to diagnose and troubleshoot the DPA in the TMJ due to occlusions violations.
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Sapkota, B., and A. Gupta. "Pattern of Occlusal Contacts in Lateral Excursions (Canine Protection or Group Function)." Kathmandu University Medical Journal 12, no. 1 (October 12, 2015): 43–47. http://dx.doi.org/10.3126/kumj.v12i1.13637.
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Background Establishing or providing occlusion that successfully permits efficient masticatory function is basic to dentistry. To maintain harmony of the occlusal condition, the posterior teeth must pass close to but not contact their opposing teeth during mandibular movement. Anterior guidance is essential to a harmonious functional relationship in the masticatory system.Objective The objective of this study was to find out the frequency of pattern of occlusal contacts in lateral position and to compare the accuracy of shim-stock and articulating paper.Method This study was conducted in the Department of Prosthodontics, Kathmandu University School of Medical Sciences. The study consisted of 80 healthy subjects between the age group of 18-30 years. They were selected randomly from undergraduate students and dental hygienist of college of dental science and written consent was taken. This age was selected because of minimal occlusal wear.Results In the present study with 80 participants the majority of the contact patterns with shimstock on the working side were group function( 84%), the canine protected occlusal patterns were found to be 12% and the unclassifiable pattern were found to be 4%. On the other hand, the data with articulating paper were group function type (94%), the canine protected occlusal patterns as 2.5% and the unclassifiable pattern were found to be 3.5%.In this study, with shim stock, the majority of the contact patterns were group function being 84% whereas with the articulating paper it was 94%. When shim stock occlusal strip (12 ?m thick) was compared to commonly used articulating paper (40 ?m), the excessive thickness of articulating paper that exceed the maximum recommended thickness of occlusal recording strips markedly must have given much more false contacts.Conclusion It was concluded that the majority of the contact pattern were group function being 84% with shim stock and 94% with articulating paper. Also shim stock exhibits superior accuracy and reliability.Kathmandu University Medical Journal Vol.12(1) 2014: 43-47