Journal articles: 'Diastermy'

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Belivanova, Veneta, and Ivo Sapunov. "The pre-Callovian stratigraphic gap in the Central Balkanids: a key for the interpretation of other Early-Middle Jurassic gaps in Bulgaria." Geologica Balcanica 33, no. 1-2 (June 30, 2003): 17–33. http://dx.doi.org/10.52321/geolbalc.33.1-2.17.

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The pre-Callovian stratigraphic gap in the Central Balkanids is distributed in the Etropole, Teteven, Troyan, Kazanluk, Gabrovo and Turgovishte Districts. To the west (village of Gintsi, Sofia District) and to the east (the section of well R-3 Yunak, District of Yarn a) of the gap uninterrupted Bathonian-Callovian rock successions exist. In its western and eastern parts the pre-Callovian stratigraphic gap is a diastem. In these localities the gap embraces minimum duration. In the western diastem the duration of the gap is from the Late Bathonian to the Early Callovian. In the eastern diastem the duration of the gap is probably in the framework of the Late Bathonian. In many localities where the gap is diastem the boundary between the basement and the cover is marked by hardgrounds. In its central part (Troyan, Kazanluk and Gabrovo Districts) the pre-Callovian stratigraphic gap is with much longer duration. This is caused by the intensive submarine washout of the earlier deposited Middle and Lower Jurassic sediments. In limited localities the Callovian from the cover lies directly even above Upper Triassic rocks. Almost everywhere the cover of the gap is represented by condensed Middle-Upper Callovian micritic limestones. They are rich of ammonites. The main microfacies type is mudstone/wackestone with filaments from thin-shelled bivalves. It is correlated with the Standard Microfacies Type 3 (SMF 3) - "pelagic mudstone and wackestone". It is formed in the lower part of the deep sublittoral, which is in consent with the ba thymetric interpretations based on the characteristics of the respective faunal spectra. The Callovian limestones in conditions of uninterrupted sedimentation show similar microfacies characteristics. In the localities where the pre-Callovian gap is a diastem, the conclusions for the microfacies characteristics and for the faunal spectra of the Bathonian sandy bioclastic limestones are similar. The microfacies type is bioclastic-lithoclastic packstonelrudstone, which can be attributed to some extent to the SMF 4 - "bioclastic-lithoclastic packstone". It may be supposed that the features of this texture direct to a more shallow parts of the deep sublittoral. Almost the same characteristics have the Bathonian limestones and marls in conditions of uninterrupted sedimentation. In general, the pre-Callovian gap is realized in submarine conditions, which are connected with the deep sublittoral. There are four stages in the transition between normal sedimentation and submarine gap: normal sedimentation (in which biostratigraphic superposition is traceable) → slow sedimentation (condensations) → submarine stratigraphic gaps (as a result of non-deposition - diastems) → submarine stratigraphic gaps (as a result of submarine washout).

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Maryam, Bibi, Javaria Imtiaz, Umar Nasir, Shaheen ., Aqsa Mumtaz, and Nauman Ullah. "Frequency of Midline Diastema in patients reported To OPD of Bacha Khan Medical College Mardan." Pakistan Journal of Medical and Health Sciences 16, no. 5 (May 30, 2022): 1147–50. http://dx.doi.org/10.53350/pjmhs221651147.

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Background: A space between adjacent central incisor teeth is termed "diastema or diastemata". Midline diastema in mixed dentition is a great center of concern for parents as well as their children, therefore, determining the time of closure of midline diastema is essential for clinical practice in Orthodontic and the study was aimed to determine the frequency of midline diastema in both maxillary and mandibular arches in patients. Material and Method: The current study was carried out at Bacha Khan Medical College Mardan, Khyber Pukhtoon Khwa to determine the frequency of midline diastema in both maxillary and mandibular arches in patients for which a total of 200 responders have examined 100 responders were males while 100 were female. Results: The frequency of Midline diastema was 12%, out of 200 hundred in which Maxillary midline diastema was 5% and Mandibular midline diastema was 5.5% and both the arches were found to be 1.5% in females. Conclusion: The finding of the current study is that the population of Khyber Pukhtunkhwa has several Midline diastemata affecting their esthetic. A similar study to find out the etiology of Midline diastema is suggested which requires a large sample size. Keywords: Midline diastema, Frequency, Orthodontic

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Al-Hashimi, Hadeel. "Significance Of Various Etiological Factors As An Indicator For The Persistence Of Median Diastema." Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), no. 2 (October 19, 2021): 139–56. http://dx.doi.org/10.55562/jrucs.v30i2.371.

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Maxillary midline diastemas are a common esthetic problem that dentists must treat. This study was performed to quantify the width of median diastema and level of bone crest and to determine the type of inter-maxillary suture, familial prevalence, spacing in upper anterior region, axial inclination of upper centeral incisors, and low frenal attachment as the most contributing factors associated with median diastema. A standardized periapical radiographs using a paralleling technique with a film holder were taken to the (99) maxillary and/or mandibular centeral incisors with median diastema and to the (85) maxillary incisors with no diastema as a control group in adults with age range from 18-25 years old. Diastema width between 0.5-1 mm has a higher percent while diastema above 2 mm has a least percent. There is a non-significant difference in the level of alveolar crest of central incisor in both control and diastema groups. Type I intermaxillary suture type was the most common in control group while type II and III were the most common in diastema. There is a relationship between spacing and type of intermaxillary suture which can use as an indicator for the persistence of diastema from childhood in addition to familial history while frenum may has no effective role in developing median diastema. Axial inclination of central incisors is one of important factors that should be taken in consideration during treatment of median diastema

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Carruitero, Marcos J., Aron Aliaga-Del Castillo, Daniela Garib, and Guilherme Janson. "Stability of maxillary interincisor diastema closure after extraction orthodontic treatment." Angle Orthodontist 90, no. 5 (May 22, 2020): 627–33. http://dx.doi.org/10.2319/080619-516.

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ABSTRACT Objectives To evaluate the stability of maxillary interincisor diastema closure and the relationship between space relapse and interincisor diastema width, overjet, overbite, angulations between adjacent maxillary anterior teeth and presence of intermaxillary osseous cleft after orthodontic treatment with extractions. Materials and Methods Twenty-four individuals with a maxillary interincisor diastema pretreatment, treated with maxillary first premolar extractions were evaluated. Dental casts and panoramic radiographs taken at pretreatment (T1), posttreatment (T2), and posttreatment follow-up (T3) were assessed. Periapical radiographs at T1 and T2 were also evaluated. Diastema relapse was assumed when T3-T2 interincisor space change was greater than zero. Diastema relapse was considered clinically significant when it was at least 0.50 mm. Data were analyzed using repeated-measures analysis of variance followed by post hoc Tukey tests or Friedman followed by Wilcoxon tests. T-test or Mann-Whitney U-test, Pearson correlation coefficient, and multiple linear regression analyses were also performed. Results No statistically significant relapse of maxillary interincisor diastemas was found. The percentage of clinically significant relapse of the maxillary interincisor diastemas was 27.78%. Specifically, for the interincisor midline diastema, it was 8.33%. Conclusions Maxillary interincisor diastema closure showed no statistically significant relapse after orthodontic treatment with premolar extractions. Clinically significant stability for maxillary interincisor diastema closure was 72.22% and, specifically, for interincisor midline diastema closure, it was 91.67%.

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Jaija, Abdullah M. Zakria, Amr Ragab El-Beialy, and Yehya A. Mostafa. "Revisiting the Factors Underlying Maxillary Midline Diastema." Scientifica 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/5607594.

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Aim. The aim of this study is to analyze the etiological factors underlying the presence of maxillary midline diastema in a sample of orthodontic patients.Materials and Methods. One hundred patients who fulfill the inclusion criteria were selected from 1355 patients seeking orthodontic treatment. The pretreatment orthodontic records were analyzed. The width of the maxillary midline diastema was measured clinically with a digital caliper at two levels: the mesioincisal angles of the central incisors and five millimeters from the incisal edge. The two measurements were averaged, and patients with diastema of more than 0.5 millimeter in width were enrolled.Results. Diastema is a multifactorial clinical finding with more than one underlying etiological cause. The interrelationship between the familial pattern of midline diastema and the microdontia, macroglossia, labial frenum, and alveolar cleft conforms was clear. The effect of a mesiodens and the upper lateral incisor whether bilaterally missing, unerupted, or peg shaped was minimal.Conclusion. Etiological factors underlying maxillary midline diastema are interconnected. Using a checklist as a guide during handling maxillary midline diastema is important in the different stages of treatment.

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Aristo Lay and Shafira Kurnia Supandi. "Management of maxillary midline diastema caused by aberrant frenum attachment: A case report." World Journal of Advanced Research and Reviews 14, no. 3 (June 30, 2022): 252–55. http://dx.doi.org/10.30574/wjarr.2022.14.3.0543.

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Background: Midline diastema in the maxillary is very common aesthetics problem in mixed and early permanent dentition, one of which etiology is aberrant frenum attachment. High frenum attachment might interfere with aesthetics, plaque control, and create mucogingival deformities, therefore compromising orthodontic result and causing recurrence. Several treatments for maxillary midline diastema are available, one of which is labial frenectomy. Objective: To present a case report of frenectomy as a mean of eliminating maxillary midline diastema. Case: This is a case report of a 25 years old female patient with high frenum attachment causing maxillary midline diastema. Patient was treated with frenectomy afterward. Frenectomy is a complete removal of frenum, including the attachment to the underlying bone. Following the treatment, midline diastema closure was showed in 4 months following frenectomy. Conclusions: Frenectomy is a potential alternative for treatment of maxillary midline diastema.

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Boushell, Lee W. "Diastema." Journal of Esthetic and Restorative Dentistry 21, no. 3 (June 2009): 209–10. http://dx.doi.org/10.1111/j.1708-8240.2009.00261.x.

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Singla, Divya, Neha Stan, Sanjay Mittal, Mandeep Bhullar, Isha Aggarwal, and Rameez Hassan. "Esthetic Perception of Various Forms of Anterior Diastemas during Smiling." Dental Journal of Advance Studies 07, no. 03 (December 2019): 103–9. http://dx.doi.org/10.1055/s-0039-3402302.

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Abstract Introduction Midline diastema is a common esthetic problem in mixed and permanent dentition. It is considered attractive in some cultures and unattractive in others. Aim The aim of this study is to compare the perceptions of anterior diastema by dental students and laypersons. Materials and Methods The study was conducted on 100 undergraduate students of Bhojia Dental College (n = 50) and Bhojia Nursing College (n = 50), Himachal Pradesh, India. A self-prepared questionnaire was given, which consisted of two parts: first part had personal details (name, age, sex, knowledge of diastema) and the second part contained an edited photograph of a patient who had reported to the Department of Orthodontics, Bhojia Dental College, with the chief complaint of midline diastema. The photographs were modified by photoediting software and arranged according to the previous studies on anterior diastema by Frush and Fisher, Lombardi, and Simian. A visual analog scale with scores 1–4 (1, most attractive; 2, attractive; 3, less attractive; 4, least attractive) was used to rank these photographs by the students. Comparison between various variables was made by using chi-squared test. Results Smile attractiveness from the most to the least attractive was Simian > Frush and Fisher > Lombardi > midline diastema among both dental and nursing students. Gender and presence of diastema had no relation with the students’ perceptions (p > 0.05). Conclusion The location and width of diastema had an important role in the perception of dental diastemas. Midline diastema was a gap with most negative perception.

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Bapat, Shirish M., and Prashant Bandejiya. "Closing a Large Maxillary Median Diastema using Bapat Power Arm." International Journal of Clinical Pediatric Dentistry 10, no. 2 (2017): 201–4. http://dx.doi.org/10.5005/jp-journals-10005-1435.

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ABSTRACT Aim The aim of this study is to present a case of large maxillary median diastema closed by bodily movement of central incisors using Bapat power arm (BPA). Materials and methods After extraction of mesiodens, a power chain with a force of 120 gm was applied to BPA ligated to preadjusted edgewise brackets bonded to maxillary central incisors to move them over round steel wire for closure of resultant diastema. Bonded retainer was placed after the closure of median diastema. Results The median diastema was completely closed in 5 months period with almost bodily movement of incisors, which was confirmed by periapical X-ray. Conclusion Bapat power arm was efficient in closing diastema without any discomfort or injury and was well accepted by the patient. How to cite this article Bapat SM, Singh C, Bandejiya P. Closing a Large Maxillary Median Diastema using Bapat Power Arm. Int J Clin Pediatr Dent 2017;10(2):201-204.

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Pribadi, Nirawati, S. Sukaton, Galih Sampoerno, S. Sylvia, Hendy Jaya Kurniawan, Maya Safitri, and Rahmadanty Mustika. "The aesthetic management of a midline diastema with direct composite using digital smile design, putty index and button shade technique: A case report." Dental Journal (Majalah Kedokteran Gigi) 55, no. 1 (March 1, 2022): 44. http://dx.doi.org/10.20473/j.djmkg.v55.i1.p44-48.

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Background: A diastema is the distance or space between two or more adjacent teeth. This abnormality can interfere with the aesthetics of a patient, and 97% of diastemas occur in the maxilla. Various treatments can be performed for diastema closure in patients, one of which is composite resin restoration. Purpose: To explain the aesthetic procedure for diastema closure. Case: A 20-year-old female patient presented with complaints of the distance between her anterior teeth (Class I Angle occlusion with normal overjet and overbite). The labial frenum associated with the diastema was normal in size and position. The patient was not amenable to invasive procedures. Case Management: Management of midline diastema closure using the direct composite technique with DSD, the putty index method and button shade technique. Conclusion: The closure of a midline diastema with direct composite using DSD, the putty index method and button shade technique provides aesthetic results with less cost and time due to the absence of laboratory procedures.

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Hamad, Nail Hasan. "Incidence of Maxillary Midline Diastema in Iraqi Students in Baghdad City." Al Mustansiriyah Journal of Pharmaceutical Sciences 15, no. 1 (June 1, 2015): 30–34. http://dx.doi.org/10.32947/ajps.v15i1.162.

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Maxillary midline diastema is one of important numerical anomalies of teeth which character as an open space between the maxillary central incisors so that many studies have been carried out in different countries of the world to find the prevalence of maxillary midline diastema. The purpose of this study was to determine the prevalence of the maxillary midline diastema and assess the gender difference in a selective sample of college and institute Iraqi student age (18-22) year in Baghdad city. A total sample of (1460) students distributed into (680) males and (780) females. The statistical analysis shows the incidence of maxillary midline diastema is (55) cases in the total sample with percent (3.8%) which is in males (3.4%) and (4.1%) in female. So it is found in females more than in males, the maxillary Midline Diastema.

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Sulistiawati and Ina Hendiani. "STUDI KASUS: “FRENEKTOMI SEBAGAI TERAPI PENDAHULUAN SEBELUM PERAWATAN ORTODONTIK” Laporan Kasus." Cakradonya Dental Journal 11, no. 1 (May 9, 2019): 63–66. http://dx.doi.org/10.24815/cdj.v11i1.13630.

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Frenektomi frenulum labialis superior sering kali dilakukan untuk mengatasi masalah diastemasentral. Bedah frenektomi ini diharapkan akan memperbaiki estetik pasien dan biasanya diikutidengan perawatan ortodontik. Pasien wanita berusia 19 tahun datang ke Klinik Residen PeriodonsiaFakultas Kedokteran Gigi Universitas Padjadjaran dirujuk dari Klinik Ortodonsia untuk dilakukanfrenektomi, setelah dilakukan pemeriksaan diketahui terdapat aberansia frenulum labialis superioryang menjadi penyebab diastema sentral. Pada kasus ini dilakukan bedah frenektomi dengan teknikklasik menggunakan hemostat dan skalpel dengan tujuan memperbaiki perlekatan frenulum labialissuperior yang menyebabkan diastema sentral. Perdarahan yang terjadi saat bedah dapat dikontroldengan baik. Hasil perawatan menunjukkan perlekatan frenektomi diperbaiki dan diikuti denganperawatan ortodontik untuk menutup diastema sentral.Kata kunci: Aberansia frenulum labialis superior, diastema sentral, frenektomi, teknik klasik

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Balassa, Brenda da Silva, Iago Demétrio da Silva, Marília Zeczkowski, and Ludmila Priscilla Manetti. "Reanatomization of anterior teeth with composite resin: case report." Research, Society and Development 9, no. 12 (December 26, 2020): e32891210962. http://dx.doi.org/10.33448/rsd-v9i12.10962.

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Dental diastema is a space or absence of contact between two consecutive teeth, which may represent an aesthetic embarrassment for the patient when smiling. For the aesthetic resolution of diastema some factors should be evaluated as, age of the patient, dental structure conservation, reversibility of treatment, cost and longevity. For closing diastema, for a long time, the clinical alternatives were the use of orthodontics and fixed prostheses. Currently, with composite resins, it is possible to reproduce natural characteristics of the teeth with a direct, reversible restorative technique, without the wear of healthy dental structure, with affordable cost, able to provide satisfactory aesthetic results. The aim of this study is to report a case of a patient diagnosed with inter incisor diastema and to present a literature review. Patient, male, 70 years old, was attended at oral clinic of Ingá University Center - Uningá, complaining about the aesthetics of his smile. Clinically, was observed the presence of a diastema between upper incisor, fracture of incisal edge of central incisors and poor dental positioning. A reverse planning of the case was carried out through diagnostic waxing. With aid of a silicone guide, the diastema was closed through reanatomizations in composite resin. After the proposed treatment, was possible to obtain a satisfactory aesthetic in the patient's smile. The closure of diastema, with the use of composite resins was able to provide a better contour to the teeth, closing the spaces present, resulting in an aesthetic and pleasant smile.

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Rahaju, Asih, and Itoh Rositoh. "NON-INVASIVE ESTHETIC REHABILITATION OF ANTERIOR DIASTEMA WITH DIRECT COMPOSITE RESTORATION." Journal of Health and Dental Sciences, Volume 2 No 2 (September 30, 2022): 329–42. http://dx.doi.org/10.54052/jhds.v2n2.p329-342.

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Diastema is a gap between adjacent teeth that occur physiologically from the teeth eruption. However, diastema between the maxillary central incisors in an adult can be an aesthetic problem and sometimes impair speech. Diastema treatment with low or enlarged superior labial frenulum includes frenectomy, orthodontic treatment, veneers, crown, and bridge or resin-based composite direct restorations. This case report will discuss the rehabilitation of diastema in an aesthetic zone of maxillary central incisors due to low frenulum attachment. It was done by a minimally invasive approach using direct composite restoration, completed within several hours after the study model was analyzed, and much less expensive than other forms of treatment. The protocol involved model analysis, smile design, mock-up, silicon index creation, and composite selection. Patient cooperation and understanding of the limitations are critical to long-term treatment success. The direct composite resin is a fast, simple method yet durable to achieve good improvement of small diastema in the aesthetic zone. And stable after three years.

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Chałas, Renata, Mirosław Orłowski, and Anna Sękowska. "Usefulness of Composite Restoration in Direct Esthetic Closure of Midline Gap." Polish Journal of Public Health 124, no. 2 (August 8, 2014): 89–92. http://dx.doi.org/10.2478/pjph-2014-0020.

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Abstract Introduction. Midline gap (diastema) is a space between two teeth, commonly between two incisors. The treatment can be provided by orthodontic, conservative (restorative) or prosthetic methods. Aim. The aim of the study was an assessment of using direct composite restoration in aesthetic closing of diastema. Material and methods. The space correction between teeth was performed among female and male adult patients with diastema of 3 to 6 mm. The microhybrid resin composite was used for the composite build-ups with a help of celluloid or silicon matrix due to its good handling properties and shade matching, and polishability properties. Results. Depending on the size of diastema, the partial or total closing was done to achieve the cosmetic effect. The obtained clinical results were highly assessed both by dentists and patients. It was possible to obtain optimal aesthetic results with resin composite restorations only. Conclusions. The simple closure of diastema with direct composite reconstructions can result in successful outcome and patient's satisfaction.

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Ayshan Kolemen, Hasan Sabah Hasan, and Arkan Muslim Al Azzawi. "Medline diastema of orthodontic patients - Prevalence and Etiology in Erbil Population - A cross-sectional study." International Journal of Research in Pharmaceutical Sciences 11, no. 4 (September 30, 2020): 5997–6003. http://dx.doi.org/10.26452/ijrps.v11i4.3262.

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To investigate the prevalence and etiological factors that contribute in midline diastema in Erbil population among different age groups and genders. A sample of (ex: 1021orthodontic patients (537 males and 484 females) were randomly selected from Erbil population attending to orthodontic department of khanzad polyclinic teaching center (General directorate of hawler / Ministry of health/ Kurdistan region- Iraq) during 2018-2019 period. Aged (13-35 years) with mean age ± SD was 19.6 ± 4.8 years, with a median of 19 years. The examination included patient history taking, intraoral examination, photograph, intraoral periapical radiography of incisors area and panoramic radiographic. Diastema consider positive when the space between central incisors is 0.5mm and more, width was measured clinically used digital Vernier calipers at one millimeter above the incisors edge. In this study the prevalence of midline diastema was 23.2%. location was in the maxilla (97%), in mandible (1.3%) and in both was (1.7%). The prevalence of midline diastema differs significantly between the age groups (p < 0.001). The highest prevalence (55.8%) was among patients aged ≥ 30 years, and it was also high (37.7%) among those aged < 15 years. The prevalence among females (26.4%) was significantly higher than the prevalence (20.3%) among males (P= 0.020). The main causes of midline diastema in females was thumb sucking and missing lateral incisors (14.1% and 12.5% respectively) and in males was high labial frenum and super numerally teeth (39.4% and 30.3% respectively). The prevalence of diastema in Erbil City (Kurdistan regional- Iraq) area was 23.2%, the location mostly in maxilla (97%). The prevalence of diastema in females more than males.

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Enders, Dieter, Sun Li, Xiang-Yu Chen, He Sheng, Carolina von Essen, and Kari Rissanen. "N-Heterocyclic Carbene Catalyzed Asymmetric Synthesis of Dihydropyranothiazoles via Azolium Enolate Intermediates." Synthesis 50, no. 05 (December 20, 2017): 1047–52. http://dx.doi.org/10.1055/s-0036-1591872.

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A highly diastereo- and enantiostereoselective synthesis of bicyclic dihydropyranothiazoles combining a thiazole and δ-lactone skeleton via NHC-catalyzed [4+2] annulation of 5-alkenylthiazolones and α-chloroaldehydes has been developed. The heterocyclic products are formed via azolium enolate intermediates in good yields with high diastereo- and enantistereoselectivities.

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B. Panchal, Akshita, Kailash Attur, Manjusha Rawatiya, Kiran Vachhani, and Sarang Soni. "CLOSURE OF MIDLINE DIASTEMA BY DIRECT COMPOSITE RESIN BUILD-UP USING PUTTY INDEX- A CASEREPORT." International Journal of Advanced Research 9, no. 11 (November 30, 2021): 1047–51. http://dx.doi.org/10.21474/ijar01/13839.

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A common aesthetic concern among patient is maxillary anterior space or diastema. Labial frenulum, microdontia, mesiodens, peg-shaped lateral incisors, agenesis, cysts, habits such as finger sucking, tongue thrusting, or lip sucking, dental malformations, genetics, proclinations, dental-skeletal discrepancies, and imperfect coalescence of the interdental septum are some of the causes of midline diastema. For diastema closure there are a variety of therapy options. Many novel therapies have been applied, ranging from restorative procedures to surgery (frenectomies) and orthodontics for closure of diastema or a combination of procedures to meet the aesthetic and functional needs of patientâ€™saesthetic. Recent advancement in direct dental composite resin allows dentists to do minimally invasive cosmetic dentistry that is both conservative and time-consuming. In diastema cases, direct composite resins give the dentist and patient entire control over the restriction and the construction of a natural smile. The purpose of this study is to present a case report of aesthetic management using putty index of maxillary anterior space, which includes the midline.

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Goyal, Ayush, Vineeta Nikhil, and Ritu Singh. "Diastema Closure in Anterior Teeth Using a Posterior Matrix." Case Reports in Dentistry 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/2538526.

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Presence of diastema between anterior teeth is often considered an onerous esthetic problem. Various treatment modalities are available for diastema closure. However, not all diastemas can be treated the same in terms of modality or timing. The extent and the etiology of the diastema must be properly evaluated. Proper case selection is of paramount importance for a successful treatment. In this case report, diastema closure was performed with direct composite restorations. One bottle etch-and-rinse adhesive was used and a single shade was used to close the diastemas. Contoured sectional posterior matrix was used to achieve anatomic contouring of the proximal surfaces of the teeth. This was followed by finishing and polishing using polishing discs. Patient was kept on recall every 6 months.Conclusion. Diastema closure with correct anatomic contouring is easy to perform using the contoured sectional matrices. At 14-month recall, no clinical signs of failure like discoloration or fracture were evident. Also, patient did not complain of any sensitivity. Thus, direct composite restorations serve as durable and highly esthetic restorations leading to complete patient satisfaction.

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Ismiyatin, Kun, Olivia Vivian Widjaja, Singgih Harseno, Ahmad Afif Dzulfiqar, Caeleb Fabrizio Sudarsono, and Indira Moza Azzaria. "The aesthetic management of diastema closure treatment with indirect veneer using lithium disilicate: A case report." Conservative Dentistry Journal 12, no. 1 (June 30, 2022): 1–5. http://dx.doi.org/10.20473/cdj.v12i1.2022.1-5.

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Background: Diastema is a space between two or more adjacent teeth that can interfere with the patient's aesthetic appearance. Various aesthetic treatments can be performed for diastema closure on anterior teeth, one of which is through the installation of veneers. The lithium disilicate ceramic material produces the thinnest veneer and has better properties than other materials, and is able to cover the anterior diastema with a fairly large width. Purpose: To describe the aesthetic procedure for closing the diastema of anterior teeth using indirect lithium disilicate ceramic veneer. Case(s): A 29-years-old male patient came with a complaint of dissatisfaction with her smile because of a gap between teeth 12 and 13. The teeth are in vital condition with normal overjet and overbite, and there are no systemic health problems. Case Management: The management of diastema closure on teeth 12 and 13 was carried out with indirect lithium disilicate veneer treatment. Lithium disilicate veneer has promising aesthetic results due to its enamel-like nature, minimally invasive because it requires minimal tooth reduction, good strength, and did not cause gingival irritation. As a result, this treatment could increase self-confidence of the patient. Conclusion: Diastema closure treatment using indirect lithium disilicate veneer is an effective treatment, gives satisfactory results and can increase the patient's confidence.

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Rusli, Victoria, and Miesje Karmiati Purwanegara. "Koreksi multiple diastema dan gigitan silang posterior unilateral pada kasus maloklusi kelas III<p></p>Correction of multiple diastema and unilateral posterior crossbite in class III malocclusion<p>." Jurnal Kedokteran Gigi Universitas Padjadjaran 33, no. 3 (March 29, 2022): 87. http://dx.doi.org/10.24198/jkg.v33i3.33473.

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ABSTRAKPendahuluan: Gigitan silang posterior didefinisikan sebagai relasi abnormal antara gigi molar dan/atau premolar rahang atas dan bawah dalam arah bukal-lingual pada oklusi sentrik. Diastema atau celah antar gigi merupakan kondisi yang umum ditemui dan menjadi salah satu masalah estetis dan maloklusi. Tujuan penulisan laporan kasus ini adalah menjelaskan perawatan ortodontik kasus maloklusi kelas III dengan multiple diastema dan gigitan silang unilateral. Laporan kasus: Pasien laki laki 25 tahun datang ke Klinik Spesialis Ortodontik Rumah Sakit Gigi dan Mulut Fakultas Kedokteran Gigi Universitas Indonesia dengan keluhan gigi depan berjarak. Pasien mendapat diagnosa maloklusi skeletal kelas III dengan multiple diastema pada gigi anterior rahang atas dan gigitan silang posterior unilateral. Kasus ini dikoreksi dengan ortodontik cekat tanpa pencabutan menggunakan braket preskripsi MBT slot 0,022. Perawatan secara garis besar meliputi pengaturan ruangan serta penggunaan criss-cross elastic di akhir perawatan untuk perbaikan gigitan silang unilateral. Perawatan ortodontik diselesaikan dalam waktu 18 bulan. Simpulan: Perawatan ortodontik cekat pada kasus maloklusi kelas III dengan ekspansi lengkung rahang disertai penggunaan criss- cross elastic yang teratur dapat mengoreksi gigitan silang. Recontouring gigi anterior rahang atas paska pengaturan ruang pada kasus multiple diastema juga memberikan tampilan senyum pasien yang lebih estetis.Kata kunci: multiple diastema; gigitan silang posterior; maloklusi kelas III ABSTRACTIntroduction: Posterior crossbite is an abnormal relationship between the maxillary and mandibular molars and premolars in the buccal-lingual direction in centric occlusion. Diastema or gap between teeth is a common condition and is one of the aesthetic problems and malocclusion. This case report aims to describe the orthodontic treatment of a class III malocclusion case with multiple diastema and unilateral crossbite. Case report: A 25-year-old male patient came to the Orthodontic Specialist Clinic of the Dental Hospital of the Faculty of Dentistry of the University of Indonesia with complaints of distant front teeth. The patient was diagnosed with skeletal class III malocclusion with multiple diastema of anterior maxillary teeth and unilateral posterior crossbite. This case was corrected with fixed orthodontics without extraction using a 0.022 slot MBT prescription bracket. Treatment generally includes room management and a criss-cross elastic at the end of the treatment to repair unilateral crossbites. The orthodontic treatment was completed within 18 months. Conclusion: Fixed orthodontic treatment in cases of class III malocclusion with the expansion of the jaw arch with regular use of criss-cross elastic can correct the crossbite. Recontouring of anterior maxillary teeth after spatial adjustment in cases of multiple diastema also gives the patient a more aesthetic smile.Keywords: multiple diastema; posterior crossbite; class III malocclusion

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Kamath, MKetaki, and AV Arun. "Midline diastema." International Journal of Orthodontic Rehabilitation 7, no. 3 (2016): 101. http://dx.doi.org/10.4103/2349-5243.192532.

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Soetojo, Adioro, and Bintang Adiguna Widjaja. "Management Of White Spot And Central Diastema On Anterior Teeth With Direct Composites Restoration (A Case Report)." Conservative Dentistry Journal 9, no. 2 (June 25, 2020): 66. http://dx.doi.org/10.20473/cdj.v9i2.2019.66-69.

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Background: One of the most common aesthetic problems is discoloration and central diastema of the anterior teeth. This can make the patient's appearance disturbed and can lead to confidence in influential patients in the complex interaction of social, cultural and psychological disorders. Purpose: The purpose of this case report is to explain the management of white spot on central incisive with central diastema. Case: A 22 years old woman came to Airlangga Dental Hospital with a chief complaint of shyness and lack of confidence due to some white spot and gap on the two central front teeth. Management: The treatment of white spot and central diastema were done using a partial direct veneer technique. Conclusion: White spot and central diastema treated with partial direct veneer restoration is able to produce good aesthetic results.

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Karale, Rupali, Shirin Jha, Srirekha Aswathanarayana, Lekha Santhosh, and Megha Kapadia. "A Novel Approach for the Closure of Multiple Diastema: A Clinical Technique." Journal of Operative Dentistry & Endodontics 2, no. 2 (2017): 84–87. http://dx.doi.org/10.5005/jp-journals-10047-0043.

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ABSTRACT Correction of multiple diastema without much preparation of the teeth is one of the challenges in clinical esthetic dentistry. Indirect restorative procedures render excellent esthetics; however, these are invasive procedures that lead to the removal of unnecessary tooth structure in order to achieve the desired result. Whenever possible, the most conservative approach is preferred over the invasive procedures. Many innovative techniques have been advocated, varying from restorative procedures, frenectomy, or orthodontic treatment for the closure of spaces in between the anterior teeth. When a relatively smaller diastema is present in between the teeth, extensive preparation of the tooth structure is not necessary and utilization of free hand bonding of composite resin may yield the desired result. So far, innumerable cases have been reported in the literature which has illustrated various techniques for closure of diastema. The following case report discusses a novel technique for closure of multiple diastema. How to cite this article Jha S, Aswathanarayana S, Karale R, Santhosh L, Kapadia M. A Novel Approach for the Closure of Multiple Diastema: A Clinical Technique. J Oper Dent Endod 2017;2(2):84-87.

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Ferreira, Ana Paula de Fátima Corrêa, Paloma Shelsia Rocha Alves, Carla Mariah da Silva Costa, Danielle da Silveira Teles, Mariane Gomes de Castro Mota Dias, Myrella Mikaela Araújo Lima, Silvia Karla Costa, and Gabriela de Figueiredo Meira. "Fechamento de diastema com resina composta utilizando a técnica da muralha: revisão de literatura." Research, Society and Development 11, no. 16 (December 8, 2022): e293111638414. http://dx.doi.org/10.33448/rsd-v11i16.38414.

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Introdução: O diastema possui uma repercussão desfavorável na aparência dos pacientes. Muitas pessoas com diastema, buscam por tratamento na área odontológica, visando a estética e uma boa aparência. Objetivo: O objetivo desse trabalho é enfatizar a importância da utilização da técnica da muralha na resistência mastigatória, utilizando resina composta para preencher o espaço interdental. Metodologia: Portanto, realizamos como método uma busca de dados, sobre a pesquisa de revisão de literatura através do assunto abordado no referencial teórico, sobre a eficácia da resina composta, utilizada na técnica da muralha e suas vantagens no tratamento de fechamento de diastema. Resultados: Uma das alternativas de tratamento bastante eficaz para o fechamento de diastema, está na utilização da técnica da muralha associada ao uso da resina composta. Resultados e discussões: É um tratamento minimamente invasivo, com baixo custo, tempo clínico curto, podendo ser solucionado em apenas uma sessão e com boa longevidade. Essa técnica vem obtendo excelente resultado durante o tratamento. Conclusão: Portanto, pode-se afirmar que o tratamento proposto para o fechamento de diastema, obtém resultado satisfatório restabelecendo forma, estética, autoestima e restaurando função e a fonética; uma vez que, um sorriso harmonioso melhora as oportunidades sociais e eleva a autoestima.

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Ajaji, Norah Al, Ali Barakat, Pradeep Koppolu, and Lingam Amara Swapna. "Minimal Invasive Technique for The Esthetic Management of Midline Diastema: A Case Report." Pakistan Journal of Medical and Health Sciences 15, no. 10 (October 30, 2021): 3088–91. http://dx.doi.org/10.53350/pjmhs2115103088.

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It is a case report of a minimally invasive technique for diastema restoration with sectional veneer fabrication. It involves a technically demanding procedure and less time with minimal disruption and stress to soft tissue. The method presented in this case report depicts the closure of anterior spacing by an aesthetic sectional veneer. Successful restoration in present-day dentistry includes minimal biological cost, promising longevity and esthetic integration in addition to traditional criteria. However, several other factors influence patient acceptance, such as the uncomplicated technique, possible intraoral repair, reduced soft tissue trauma, and affordable financial cost. The clinical procedure of sectional veneers, presented in this case, introduces an additional treatment option to produce a minimal invasive diastema restoration in a single appointment, with a reduced number of clinical steps. Keywords: Midline Diastema, Maxillary Anterior Diastema, Minimal Invasion Techniques, Esthetical Management, Partial Veneers

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Dixit, PB, and S. Dixit. "Aesthetic & Economical Management of Diastema." Journal of Kathmandu Medical College 1, no. 2 (May 26, 2013): 110–13. http://dx.doi.org/10.3126/jkmc.v1i2.8149.

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Diastema is a space between the teeth. Presence of diastema may lead to self-consciousness and patient may experience low self-esteem. Before closing the diastema, the cause must be understood and the treatment should be well planned. Diastemas are commonly closed by preparing the tooth & restoring it with composite resin. Restorative method with composite resin is the least invasive, economical and aesthetic treatment which can be done in a single visit in comparison to all the other available treatment options. DOI: http://dx.doi.org/10.3126/jkmc.v1i2.8149 Journal of Kathmandu Medical College, Vol. 1, No. 2, Oct.-Dec., 2012: 110-113

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Simaan, Marwan, and Ilan Marek. "Diastereo- and enantioselective preparation of cyclopropanol derivatives." Beilstein Journal of Organic Chemistry 15 (March 21, 2019): 752–60. http://dx.doi.org/10.3762/bjoc.15.71.

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The diastereoselective carbocupration reaction of alkoxy-functionalized cyclopropene derivatives, followed by a subsequent trapping of the resulting cyclopropylmetal species with an electrophilic source of oxygen (oxenoid) afforded various tetrasubstituted cyclopropanol derivatives in high diastereo- and enantiomeric ratios. Similarly, the enantioselective copper-catalyzed carbomagnesiation/oxidation (or amination) sequence on achiral nonfunctionalized cyclopropenes provided the desired cyclopropanol (and cyclopropylamine) derivatives in excellent diastereo- and enantiomeric excesses.

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Dvorak, G., R. Gruber, C. D. Huber, J. Goldhahn, G. Zanoni, D. Salaberger, G. Watzek, and R. Haas. "Trabecular Bone Structures in the Edentulous Diastema of Osteoporotic Sheep." Journal of Dental Research 87, no. 9 (September 2008): 866–70. http://dx.doi.org/10.1177/154405910808700918.

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The edentulous ovine diastema represents a suitable region for implantological research. Due to distinctive embryonic origin and mechanical loading, the edentulous diastema may respond differently to osteoporosis than tooth-bearing areas. To test this assumption, we subjected geriatric sheep to ovariectomy, calcium-/vitamin-D-restricted diet, and methylprednisolone administration. Adult control sheep remained untreated. Structural parameters and bone mineral density were determined by microcomputed tomography and conventional computed tomography, respectively. We report that the trabecular microstructure in the diastema was preserved from catabolic changes. In contrast, the premolar maxillary region of osteoporotic sheep had diminished trabecular bone mineral density, with the corresponding structural deteriorations. These results suggest that maxillary trabecular bone of the edentulous diastema does not respond to catabolic changes which occur in the tooth-bearing area in osteoporosis. Our findings imply that regional anatomic domains must be considered in the planning of pre-clinical studies, taking osteoporotic changes into account.

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Silva, Elen Maria Carvalho da, Millena Lopes de Brito, Breno Wesley Leal Carvalho, Marcelo Lucio Sousa Silva Junior, and Ana de Lourdes Sá de Lira. "Impacto da presença de diastema na autopercepção do sorriso em uma amostra de adolescentes." Arquivos em Odontologia 58 (October 3, 2022): 166–74. http://dx.doi.org/10.35699/2178-1990.2022.37628.

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Objetivo: Verificar a prevalência de diastema em adolescentes, analisar fatores associados e investigar o impacto dessa má oclusão na autopercepção dos adolescentes em relação ao seu sorriso. Métodos: A amostra consistiu em 160 adolescentes. Tratou-se de um estudo transversal e quantitativo realizado em escolas privadas (A1) e públicas (A2), no período de agosto de 2020 à julho de 2021, na cidade de Parnaíba, Piauí. Inicialmente, aplicou-se um questionário epidemiológico. A seguir, o exame clínico foi realizado sob luz natural, em ambiente escolar. Os alunos que apresentaram diastema constituíram o grupo G1 e os que não apresentaram formaram o grupo G2. Nos alunos do G1 foram identificadas a localização e a medida do diastema e dos possíveis fatores associados e aplicado um segundo questionário sobre a auto avaliação estética do sorriso. Foram realizadas estatísticas descritivas, obtendo-se porcentagens, frequências e análises de associação com o teste qui-quadrado e comparações de média a partir do teste t. Resultados: Houve diferença significativa na distribuição de adolescentes quanto ao tipo de escola e presença de diastema, verificando-se maior prevalência na escola pública. Quanto ao gênero, não foi encontrada diferença estatisticamente significativa, assim como não houve associação entre o sorriso e a presença de diastema, pois a maioria não apresentava vergonha ao sorrir, estava satisfeita e julgava ter um sorriso agradável. Verificou-se, quanto aos fatores associados, uma distribuição significativa com maior prevalência de “discrepância de tamanho dentário”. Conclusão: A presença de diastema teve como fator associado predominante, a discrepância de tamanho dentário. A maioria dos adolescentes afirmaram estar satisfeitos com o sorriso, apesar de não ser agradável, considerando desnecessário o tratamento.

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Akin, Richard, and Al Sri Koes Soesilowati. "Penatalaksanaan Frenektomi dan Depigmentasi Gingiva pada Regio Anterior Rahang Atas Anak Perempuan Usia 11 Tahun." Majalah Kedokteran Gigi Klinik 1, no. 1 (June 29, 2016): 5. http://dx.doi.org/10.22146/mkgk.11910.

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Frenulum labialis yang abnormal dapat berpengaruh terhadap kesehatan gingiva dan menimbulkan penyakit periodontal dengan cara menarik margin gingiva sehingga menimbulkan resesi gingiva. Abnormalitas dari frenulum ini juga menyebabkan diastema dari gigi insisivus sentral, iritasi pada jaringan periodontal, menghalangi proses pembersihan gigi, menghalangi pergerakan alat ortodonsi, mengganggu pemakaian protesa gigi serta berpengaruh pada estetik. Selain frenulum yang abnormal, masalah pada gingiva yang dapat berpengaruh juga pada estetik adalah pigmentasi gingiva. Pigmentasi pada gingiva merupakan hasil dari granul melanin yang diproduksi oleh melanoblas. Hiperpigmentasi melanin pada gingiva biasanya bukan masalah medis tetapi keluhan pasien yang menginginkan terapi perbaikan estetik. Untuk melaporkan penatalaksanaan frenektomi labialis superior dan depigmentasi pada kasus sentral diastema dan pigmentasi gingiva. Anak perempuan 11 tahun diastema sentral insisivus maksila disertai dengan hiperpigmentasi gingiva regio anterior maksila. Diastema sentral insisivus maksilanya disebabkan oleh perlekatan frenulum labialis superior yang tinggi. Perawatan untuk perlekatan frenulum labialis superior yang tinggi dilakukan frenektomi dan perawatan depigmentasi dilakukan dengan teknik scraping menggunakan skalpel. Perawatan frenektomi dan depigmentasi menunjukkan hasil perbaikan perlekatan frenulum dan menghilangkan hiperpigmentasi gingiva. ABSTRACT: Management of Frenectomy and Gingival Depigmentation at Regio Anterior Upper Arch of 11 Year Old Girl. Abnormal labial frenulum may affect gingival health and cause periodontal disease by pulling the gingival margin causing gingival recession. Abnormalities of the frenulum also cause diastema of central incisors and irritation of the periodontal tissues, bother the teeth cleaning process, interfere the movement of orthodontic tools, interfere with the proper fit of the denture and affect the aesthetics. In addition to abnormal frenulum, a problem that can affect the gingival esthetics is also gingival pigmentation. Gingival pigmentation is a result of melanin granules produced by melanoblast. Melanin hyperpigmentation of the gingiva is not a medical problem but it becomes a complaint from patients who desire aesthetic improvement therapies. To report frenectomy labialis superior management and depigmentation in the central case of diastema and gingival pigmentation. An 11 year old girl had diastema in maxillary central incisor accompanied by gingival pigmentation in maxillary anterior region. Diastema in maxillary central incisor is caused by a high attachment of the superior labial frenulum. The (one of the) Treatment for a high attachment of the superior labial frenulum is frenectomy and the depigmentation treatment is done by scraping technique using a scalpel. Frenectomy and depigmentation treatment show improved results of the frenulum attachment and remove gingival pigmentation.

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Ishikiriama, SK, BLC Ishikiriama, EM Maenosono, GS Zabeu, and MA Pereira. "A Suggested Technique to Restore a Stable and Tight Contact Point in Diastema Closure." Operative Dentistry 46, no. 2 (March 1, 2021): 136–42. http://dx.doi.org/10.2341/19-284-t.

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SUMMARY This article presents a case report on diastema closure in anterior teeth with direct resin composite restoration. This suggested approach has been found to be efficient with regards to esthetics, marginal adaptation, and the quality of proximal contacts in diastema closure. These advantages are presented in this report.

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Dobrescu, Anca Monica, Nicu Dobrescu, Raluca Monica Comăneanu, and Doina Lucia Ghergic. "Diastema closure by veneering – case presentation." Romanian Journal of Stomatology 61, no. 1 (March 31, 2015): 74–76. http://dx.doi.org/10.37897/rjs.2015.1.14.

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Maxillary diastema has many causes and can receive more treatment options. This article presents the case of a patient who had undergone aesthetic diastema closing using ceramic veneers and also edentulous prosthesis for upper lateral incisor with a crown with aggregation represented by a mesio-palatal ceramic veneer.

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Nazeh, Abdullah A. Al. "Relationship between Perception of Maxillary Midline Diastema and Personality Profiles." World Journal of Dentistry 7, no. 2 (2016): 59–63. http://dx.doi.org/10.5005/jp-journals-10015-1365.

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ABSTRACT Aims The aim of this study was to investigate the relationship between personality profiles and perception of maxillary midline diastema (MMD) among laypeople. Materials and methods Hundred total of 200 laypeople (100 females and 100 males, mean age = 28.8 ± 5.5 years) were recruited in this cross-sectional study. They were asked to rate the attractiveness of two digital photographs of ideal smile with 1 and 2 mm MMD on a visual analog scale (VAS) from 0 to 10. Participants' personality and psychological profiles were assessed via neuroticism.extraversion.openness five-factor inventory. The statistically significant levels were set at p ≤ 0.05. Results The mean VAS scores were 5.7 (± 2.1) and 4.3 (± 2.0) for 1 and 2 mm MMD respectively. The participants rated the attractiveness of 1 mm diastema better than the attractiveness of 2 mm diastema (p < 0.001). Females showed no difference in rating diastema attractiveness in comparison with males (p > 0.05). Participants (from both genders) with higher neuroticism scores rated 1 and 2 mm diastemas as less attractive than those with lower neuroticism scores (p ≤ 0.001). Conclusion Psychological profiles (high neuroticism) might be associated with negative perceptions of attractiveness of MMD. How to cite this article Al Nazeh AA. Relationship between Perception of Maxillary Midline Diastema and Personality Profiles. World J Dent 2016;7(2):59-63.

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Shivanni S S, Sumathi Felicita A, and Balakrishna R N. "Prevalence of midline diastema and its correlation with high Frenal attachment." International Journal of Research in Pharmaceutical Sciences 11, SPL3 (September 18, 2020): 847–51. http://dx.doi.org/10.26452/ijrps.v11ispl3.3035.

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The aim of this study is to assess the prevalence of midline diastema in the South Indian population and to find its correlation with high frenal attachment. The study includes patients visiting the department of orthodontics. The data was collected from the digital archives of the institution. Intraoral photos were assessed. A total 305 patients who reported to the department of orthodontics from June 2019 to March 2020 were screened. The causes of diastema namely presence of high frenal attachment, generalised spacing and periodontal disease, were evaluated. The results were statistically analysed using chi-square tests and graphs were tabulated. A total of 305 patients were screened, among which midline diastema was present in 22.3% (68) of the cases. High frenal attachment was found in 52%, generalised spacing in 36% and periodontal disease in 12% of the cases. The mean age of the patient was 23±5.25 years. The incidence of midline diastema was found to be 22%. High frenal attachment was found to be the most common etiology.

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Gkantidis, Nikolaos, Olga-Elpis Kolokitha, and Nikolaos Topouzelis. "Management of maxillary midline diastema with emphasis on etiology." Journal of Clinical Pediatric Dentistry 32, no. 4 (July 1, 2008): 265–72. http://dx.doi.org/10.17796/jcpd.32.4.j087t33221771387.

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The importance of the presence of a maxillary midline diastema resides in its position and the concern it causes to patients. This specific diastema has been attributed to genetic and environmental factors, even though it is often a normal feature of growth, especially in primary and mixed dentition. The need for treatment is mainly attributed to esthetic and psychological reasons, rather than functional ones. Although it is often the case, treatment plans should not be selected empirically but rather should be based on adequate scientific documentation. Possible therapeutic approaches include orthodontics, restorative dentistry, surgery and various combinations of the above. The ideal treatment should seek to manage not only the diastema in question but also the cause behind it. Irrespective of the treatment alternative selected, permanent retention of stable results should be considered as a treatment objective. The aim of this paper is to underscore the main etiological factors for the presence of a maxillary midline diastema and to illustrate the clinical and laboratory examinations required to recognize these factors. Furthermore, alternative treatment options are discussed depending on the etiology of the problem.

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Jackson, Kate, and Thomas Fritts. "Dentitional specialisations for durophagy in the Common Wolf snake, Lycodon aulicus capucinus." Amphibia-Reptilia 25, no. 3 (2004): 247–54. http://dx.doi.org/10.1163/1568538041975134.

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AbstractThe Common Wolf snake, Lycodon aulicus capucinus, is a species known to feed on durophagous prey such as skinks. Here we examine in detail the dentitional morphology of L. aulicus capucinus to see whether it possesses morphological specialisations for durophagy comparable to those found in other squamates. We find that L. aulicus capucinus has greatly enlarged anterior maxillary teeth, followed by a large diastema. At the diastema, the maxilla is significantly arched. The diastema is followed by a row of small, closely-packed teeth. Finally, after a short second diastema are enlarged, but ungrooved posterior maxillary fangs, with the posterior surfaces modified into blades. We propose that this dentition helps L. aulicus capucinus to ingest hard-bodied skinks in several ways: The enlarged anterior teeth and arched maxilla encircle the prey during biting, preventing it from being squeezed out of the mouth anteriorly, the short, spatulate teeth may catch under the scales of the prey, preventing escape during swallowing, and the bladelike posterior fang may slice through the hard, cycloid scales of the prey.

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A. Kasim, Andi Asmira, and Eka Erwansyah. "Frenektomi berperan pada keberhasilan perawatan ortodontik." Makassar Dental Journal 1, no. 1 (September 6, 2018): 16. http://dx.doi.org/10.35856/mdj.v1i1.44.

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Latar belakang: Frenulum merupakan jaringan ikat yang menghubungkan bibir, pipi atau lidah dengan tulang rahang. Perlekatan frenulum yang abnormal menyebabkan diastema sentralis dan ankiloglosia. Untuk menghilangkan keadaan maloklusi tersebut diperlukan frenektomi, baik sebelum ataupun sesudah perawatan ortodontik. Tujuan: Untuk memaparkan peranan frenektomi terhadap keberhasilan perawatan ortodontik. Pembahasan: Hampir semua pengguna piranti ortodontik memiliki risiko relaps. Akan tetapi, pasien dengan frenulum abnormal memiliki risiko relaps dua kali lebih besar dibanding pada pasien dengan frenulum normal. Simpulan: Pada kasus diastema sentralis, prosedur frenektomi sebelum perawatan ortodontik dilakukan untuk memudahkan pergerakan insisivus sentralis ke mesial sedangkan setelah perawatan ortodontik dilakukan untuk mencegah relapsnya diastema sentralis. Pada kasus angkiloglosia, frenektomi dibutuhkan untuk mendukung stabilitas penempatan piranti ortodontik lepasan rahang bawah.

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Novelli, Claudio, and Andrea Scribante. "Minimally Invasive Diastema Restoration with Prefabricated Sectional Veneers." Dentistry Journal 8, no. 2 (June 24, 2020): 60. http://dx.doi.org/10.3390/dj8020060.

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This case report presents a new technique for sectional veneer fabrication and diastema restoration with a prefabricated composite veneer. For the purpose of diastema restoration, a prefabricated sectional veneer provides the same benefits of a traditional ceramic sectional veneer (highly esthetic restoration with no need for tooth preparation) but involves a less technically demanding and time-consuming clinical procedure and a less delicate restoration with a reduced risk of accidental breakage and post-bonding crack formation. The technique presented in this case report bridges the gap between a direct and indirect technique for diastema restoration and introduces a new treatment option to close anterior spacing with a highly esthetic sectional veneer in a predictable and timely manner.

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Chaves, Priscila Rios Bomfim, Alexandre Melo Karam, and Andre Wilson Machado. "Does the presence of maxillary midline diastema influence the perception of dentofacial esthetics in video analysis?" Angle Orthodontist 91, no. 1 (November 4, 2020): 54–60. http://dx.doi.org/10.2319/032020-200.1.

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ABSTRACT Objective To evaluate the influence of a midline diastema on dentofacial esthetic perceptions of orthodontists, restorative dental specialists or prosthodontists, and laypersons in a frontal facial evaluation performed by means of video. Materials and Methods Two individuals aged between 20 and 25 years, one of each gender, with presence of a midline diastema were selected. An acrylic resin mockup was made of the maxillary anterior region, simulating ideal conditions of smile esthetics. Four standardized frontal view videos of the complete face were filmed of each individual in the following situations: with the ideal smile (unchanged mockup) and with the presence of midline diastemas of 0.5, 1.0, and 1.5 mm created by the mockup. In all videos, the patient said a certain sentence and, at the end, simulated a posed smile. Dentofacial esthetic perceptions of all four videos of each individual were evaluated by 51 orthodontists, 51 restorative dental specialists or prosthodontists, and 51 laypersons by means of visual analog scales. Data were evaluated using analysis of variance and Tukey post hoc test, with the level of significance set at 5%. Results The most attractive videos for all groups of examiners were those without diastema and with a diastema of 0.5 mm, for both the woman and the man. For a diastema of 1 mm or 1.5 mm, the dentofacial characteristics were considered unesthetic. Conclusions Diastemas equal to or greater than 1 mm negatively influence dentofacial esthetics in a frontal facial evaluation performed by means of video.

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van Vliet-de Vries, H. C. B. "A diastema in patients with a disability; what to do?" Nederlands Tijdschrift voor Tandheelkunde 124, no. 01 (January 7, 2017): 23–25. http://dx.doi.org/10.5177/ntvt.2017.01.16181.

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Maluly-Proni, Ana Teresa, Bruna Oliveira-Reis, Wirley Gonçalves Assunção, and Paulo Henrique Dos Santos. "Minimum intervention management of diastema closure using cordless displacement system and laminate veneers: A 2-year follow-up." European Journal of Dentistry 12, no. 03 (July 2018): 446–49. http://dx.doi.org/10.4103/ejd.ejd_208_18.

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ABSTRACTThis case report presents a minimally invasive diastema treatment using cordless gingival displacement system allowing a very conservative intervention. A 32-year-old female patient who presented with diastema in her upper front teeth opted for a treatment using laminate veneers to ensure achieving adequate tooth proportion and gingival levels. Having a displacement material that exerts excessive pressure during the displacement process can lead to disruption of the junctional epithelium and damage to periodontal tissues. This case report focuses on the effectiveness of the use of a minimally invasive method of gingival management. Two-year follow-up no infiltration, sensitivities, or fractures were detected on teeth, and indirect restorations, the purposed treatment allowed a quick, effective, and durable resolution for diastema.

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Raju, Aravind, Mahendra S, Balamohan Shetty, and Shruti Gopinath. "Correction of Relapsed Midline Diastema." Journal of Indian Orthodontic Society 54, no. 4 (July 1, 2020): 384–85. http://dx.doi.org/10.1177/0301574220924010.

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Midline diastema is one of the most common malocclusion seen in orthodontics. It may reappear after orthodontic treatment if retention protocol is not followed properly. Many treatment approaches have been cited in the literature for this and we propose an effective, time-saving, and reliable method for the correction of relapsed midline diastema using vacuum-formed retainer with elastomeric elastics.

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Malentacchi, Amanda, Victor Silva Garrone, Maria Cristina Duarte Ferreira, and Renata Pilli Joias. "Redução de diastema após exodontia de dente supranumerário e frenectomia – um relato de caso." Odonto 28, no. 55 (June 25, 2020): 1. http://dx.doi.org/10.15603/2176-1000/odonto.v28n55p1-10.

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Introdução: O diastema é caracterizado por um espaço entre os dentes ou espaço interdental, é considerado aspecto de normalidade durante a infância, porém, quando fora da normalidade pode-se suspeitar de alguns efeitos etiológicos como a presença de dentes supranumerários. Os dentes supranumerários são anomalia de número, caracterizada pela presença de dentes além da série normal, sendo mais comum o mesiodens, a conduta mais comum em casos de dentes supranumerários é a extração cirúrgica do elemento e posterior correção ortodôntica interceptativa, que em pacientes que já possuíam inserção baixa do freio, se faz necessária a frenectomia do freio labial superior. O freio é uma estrutura anatômica caracterizada como uma prega da membrana mucosa em forma triangular, quando fora da normalidade é considerado freio patológico, sendo a conduta mais comum nesses casos a intervenção cirúrgica, chamada de frenectomia. Objetivo: O objetivo desse trabalho foi relatar um caso de fechamento de diastema ântero-superior através de extração do mesiodens e frenectomia associados a ortodontia interceptativa. Relato de caso clínico: Paciente G.N, gênero masculino, 06 anos de idade compareceu na clínica odontológica da Universidade Metodista de São Paulo com diastema de 6mm entre os incisivos centrais superiores, inserção baixa do freio labial superior, dente supranumerário semi erupcionado na palatina sugestivo de mesiodens, posteriormente confirmado pela radiografia panorâmica. Foi realizada extração do mesiodens, frenectomia labial superior associado com ortodontia interceptativa para fechamento do diastema. Conclusão: A exodontia do dente supranumerário, no momento adequado, mostrou-se eficaz associada ao tratamento ortodôntico interceptativo e à frenectomia, resultando no fechamento do diastema.

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45

Clark, J. L., and P. W. Moonlight. "A NEW SPECIES OF DIASTEMA (GESNERIACEAE) FROM THE EASTERN ANDEAN SLOPES OF PERU." Edinburgh Journal of Botany 77, no. 1 (August 21, 2019): 89–97. http://dx.doi.org/10.1017/s0960428619000192.

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A striking new species of Diastema, D. fimbratiloba, is described from Ucayali Region, along the eastern Andean slopes in central Peru. The new species has a fimbriate lower corolla lobe, a feature not previously documented in the genus. We also provide a general comparison of the newly described species and morphologically related species in the context of the taxonomy and phylogeny of the poorly known genus Diastema.

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46

Prietsch, José Renato, Elizabeth Bernst Justo, and Eduardo Martinelli de Lima. "O freio labial superior e sua influência no diastema mediano superior." Revista da Faculdade de Odontologia de Porto Alegre 32, no. 2 (April 22, 1991): 9–14. http://dx.doi.org/10.22456/2177-0018.101885.

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Ao analisarmos os diversos agentes etiológicos do diastema mediano superior, foi encontrado, por eliminação destes agentes, que o freio é apenas uma entre as várias causas de diastema. Este freio é chamado de freio teto labial persistente. Um roteiro específico para diagnóstico do freio patológico foi elaborado, tendo por base a cronologia de desenvolvimento e características físico-clínicas associadas a diferentes imagens radiográficas de suturas palatinas medianas.

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Morais, Juliana Fernandes de, Marcos Roberto de Freitas, Karina Maria Salvatore de Freitas, Guilherme Janson, Nuria Cabral Castello Branco, and Marcelo Zanda. "Maxillary incisors mesiodistal angulation changes in patients with orthodontically treated anterior superior diastemas." Dental Press Journal of Orthodontics 17, no. 4 (August 2012): 65–71. http://dx.doi.org/10.1590/s2176-94512012000400015.

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OBJECTIVE: The aims of this study were to describe the patterns of maxillary incisor angulation in patients with upper interincisive diastemas, to evaluate angulation changes with treatment and posttreatment period, and to assess whether there are association between incisor angulation and interincisive diastema relapse. METHODS: The sample comprised 30 Class I or Class II patients with at least one pretreatment anterior diastema of 0.77 mm or greater after eruption of maxillary permanent canines. Data were obtained from panoramic radiographs at pretreatment, posttreatment and at least 2 years post-retention. RESULTS: Incisors presented a mesial tipping tendency after treatment, but only lateral incisors showed significant changes between pre and posttreatment stages. CONCLUSION: Regarding post-retention period, no changes were found. Finally, no relation was found between diastema relapse and maxillary incisor axial angulation.

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Otterbach, Andreas, and Hans Musso. "Diasteran (Tricyclo[3.1.1.12,4]octan)." Angewandte Chemie 99, no. 6 (June 1987): 588–90. http://dx.doi.org/10.1002/ange.19870990624.

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Singh, Parmjit, and Antonio Garrett. "Safe Midline Diastema Closure in the Presence of Porcelain Veneered Central Incisors." Clinical Medical Reviews and Reports 3, no. 8 (September 25, 2021): 01–05. http://dx.doi.org/10.31579/2690-8794/097.

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Midline maxillary diastemas have been known to have a detrimental effect on facial aesthetics. Orthodontics can successfully close a diastema using fixed appliances. Porcelain restorations bonded with fixed appliances may suffer damage. A case is presented where a fixed appliance was used to close a midline maxillary diastema bypassing porcelain veneered central incisors. Palatal attachments were used to optimise tooth movements and the porcelain veneers were left intact.

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Diksha Sharma, Abhishek Dhindsa, Sanjay Chachra, Reena Rani, Kumar Shrikant, and Manu Sharma. "Diastema-The Treatment Dilemma." International Healthcare Research Journal 3, no. 7 (October 23, 2019): 227–30. http://dx.doi.org/10.26440/ihrj/0307.10293.

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Spacing between adjacent teeth is known as Diastema, many of the patients seek closure of diastema for aesthetic reasons. Diastema less than 2 mm close spontaneously ,if they do not do so then they should not be straightaway corrected rather a thorough clinical and radiographic examination should done to determine the underlying cause and to rule out anomalies, such as the presence of any supernumerary tooth or odontoma’s which should be ruled out before going on for orthodontic therapy. The purpose of this article is to present and discuss the case of a 9-year old child with the chief complaint of spacing between the maxillary right permanent central incisor and right permanent lateral incisor. Radioopaque calcified masses were seen in the radiograph and was diagnosed with compound odontome followed by the surgical removal of the calcified masses.

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Journal articles on the topic 'Diastermy'

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