Category Archives: Orthodontics

Soft Tissue Characteristics and Gender Dimorphism in Class III Malocclusion: a Cephalometric Study in Adult Greeks

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Smaragda Kavvadia1 / Sossani Sidiropoulou-Chatzigianni1 / Georgia Pappa2 / Eleni Markovitsi1 / Eleftherios G. Kaklamanos3

1Department of Orthodontics School of Dentistry Faculty of Health Sciences Aristotle University of Thessaloniki, Thessalonki, Greece
2Private practice, Greece
3Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates

Summary

Background/Aim: Class III malocclusion case are considered complex problems associated with unacceptable esthetics. The purpose of the present study was to assess the characteristics of the soft tissue profile and investigate the possible gender differences in adult Greeks with Class III malocclusion. Material and Methods: The material of the study comprised of 57 pretreatment lateral cephalograms of adult patients with Class III malocclusion aged 18 to 39 years. Eleven variables were assessed. The variables were measured and the mean, minimum and maximum and standard deviations were calculated. Parametric and non-parametric tests were used to compare males and females patients. Results: The total sample was characterized by concave skeletal profile. Male patients exhibited greater nose prominence and superior sulcus depth, longer distance from subnasale to the harmony line, more concave profile, thicker upper lip and larger upper lip strain. Conclusions: Many significant differences were noted in soft tissue characteristics between males and females with skeletal Class III malocclusion, suggesting possible gender dimorphism.

Keywords: Class III Malocclusion; Soft Tissue; Cephalometry; Gender Dimorphis

Reference

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Citation Information:Balkan Journal of Dental Medicine, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2017-0028Export Citation

 

 

 

Signs of Bruxism and Temporomandibular Disorders among Patients with Bipolar Disorder

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Ozlem Gurbuz1 / Kursat Altinbas2 / Ceyhan Oflezer3 / Erhan Kurt4 / Mehtap Delice Arslan5

1 Department of Dentistry, Bakirkoy Research and Training Hospital for Psychiatry Neurology and Neurosurgery, Istanbul/Turkey
2 Department of Psychiatry, Canakkale Onsekiz Mart University Faculty of Medicine Canakkale/Turkey
3 Department of Anaesthesiology, Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Istanbul/Turkey
4 Department of Psychiatry, Bakirkoy Research and Training Hospital for Psychiatry Neurology and Neurosurgery, Istanbul/Turkey
5 Department of Psychiatry, Bakirkoy Research and Training Hospital for Psychiatry Neurology and Neurosurgery, Istanbul/Turkey

Summary

Background/Aim: There is an abundance of data regarding temporomandibular disorders (TMD) and bruxism specific to patients with bipolar disorder (BD). This study aimed to investigate the prevalence of TMD signs in subjects with and without BD. Material and Methods: The case group included 242 adult patients (103 men and 139 women) with BD and and the control group included 187 subjects without BD (89 men and 98 women). The case and control groups were compared for the presence of bruxism and the signs of TMD including muscle and temporomandibular joint (TMJ) tenderness to palpation, limitation of maximum mouth opening, and TMJ sounds. Results: The frequency of at least one sign of TMD was significantly higher in patients with BD (191 ⁄242, 78.9%) than the control group (95 ⁄187, 50.8%) (p<0.001). Statistically significant differences were found between the case and control groups in terms of joint pain on palpation (p<0.05), masseter muscle pain on palpation (p<0.01), joint clicks (p<0.001) and limited mouth opening (p<0.001). Bruxism was significantly higher in patients with BD (49.6%) than the control group (19.8%) (p<0.001). Conclusions: Patients with BD appear to be more prone to having TMD signs and bruxism compared to the control group, but this comorbidity should be better understood by further studies.

Keywords: Bipolar Disorder; Temporomandibular Disorder Signs; Bruxism

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Citation Information:Balkan Journal of Dental Medicine, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2017-0026Export Citation

 

Relationship between Orthodontics and Temporomandibular Disorders

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Aikaterini Tagkli / Polytimi Paschalidi / Alexis Katsadouris / Apostolos I. Tsolakisn

School of Dentistry, National and Kapodistrian University of Athens, Greece

Summary

Since the end of the 20th century, the problems of the temporomandibular disorders (TMDs) have aroused interest to the orthodontists. The aim of this literature review is to present the contemporary evidence concerning the association between the presence of malocclusions and the occurrence of signs and symptoms of the TMJ. In addition, additional variables, which may affect the TMJs of a patient during the orthodontic treatment are pointed out. It is evident that there is an increased number of patients who are seeking for orthodontic treatment, not only in order to enhance their facial aesthetics and the function of mastication system, but also to relieve the symptoms of the temporomandibular joint (TMJ). There are multiple etiological factors that have been associated with the TMDs and they may be manifested by pain and/or sounds of TMJ. In addition, during the clinical examination it can be detected a deviation from the normal function of the mandible.

Keywords: Orthodontic Treatment; Temporomandibular Disorders; Temporomandibular Joint

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Citation Information:Balkan Journal of Dental Medicine, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2017-0022Export Citation

Examination of Scanner Precision by Analysing Orthodontic Parameters

[btn url=”http://balkandentaljournal.com/wp-content/uploads/2017/03/Majstorovi-ç.pdf” text_color=”#ffffff” bg_color=”#81d742″ icon=”fa-file-pdf-o” icon_position=”start” size=”14″ id=”” target=”NewWindow”]Download Article[/btn]

1 / Luka Čerče2 / Davorin Kramar2 / Mirko Soković2 / Branislav Glišić1 / Vidosav Majstorović3 / Srđan Živković4

1University of Belgrade, Faculty of Dentistry, Belgrade, Serbia
2University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana, Slovenia
3University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia
4Military Technical Institute, Belgrade, Serbia

Summary

Background: 3D modelling in orthodontics is becoming an increasingly widespread technique in practice. One of the significant questions already being asked is related to determining the precision of the scanner used for generating surfaces on a 3D model of the jaw.

Materials and methods: This research was conducted by generating a set of identical 3D models on Atos optical 3D scanner and Lazak Scan laboratory scanner, which precision was established by measuring a set of orthodontic parameters (54 overall) in all three orthodontic planes. In this manner we explored their precision in space, since they are used for generating spatial models – 3D jaws.

Results: There were significant differences between parameters scanned with Atos and Lazak Scan. The smallest difference was 0.017 mm, and the biggest 1.109 mm.

Conclusion: This research reveals that both scanners (Atos and Lazak Scan), which belong to general purpose scanners, based on precision parameters can be used in orthodontics. Early analyses indicate that the reference scanner in terms of precision is Atos.

Keywords: Scanning; 3D modelling; Orthodontics; Precision

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Citation Information: Balkan Journal of Dental Medicine. Volume 21, Issue 1, Pages 32–43, ISSN (Online) 2335-0245, DOI: https://doi.org/10.1515/bjdm-2017-0005, March 2017