Association Of Impacted Third Molars With Facial Growth Patterns Among Adult Indian Patients - A Retrospective Study
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Date
2019-01
Journal Title
Journal ISSN
Volume Title
Publisher
International Research Organization for Life & Health Sciences (IROLHS)
Abstract
Introduction: The third molar (3M) varies more than other molars in terms of shape, size, timing of eruption, and tendencytoward impaction. Hence, studies need to be carried out to clarify the association of the various patterns of facial growth withmandibular 3M impaction.Purpose: The purpose of this study is to relate the level of impaction of mandibular 3Ms and their inclinations to various patternsof facial growth among Indian patients.Materials and Methods: A total of 207 lateral cephalograms and optic pathway gliomas (OPGs) of patients were obtainedfrom NISSAN Radiological and Diagnostic Centre. The OPGs were analyzed by a single examiner as per: (1) Angulations(using Quek’s analysis - beta angle, 2003). (2) Depth of 3Ms. The lateral cephalograms were assessed by a single examinerusing: (1) Down’s analysis. (2) Beta angle. (3)Jarabak’s ratio. (4) Bjork’s analysis.The subjects were further classified into skeletal Class I, II, and III as well as into horizontal, vertical, and normal growth patterns.The final study data were subjected to a Pearson correlation test to check the association between the 3M impactions andvarious angles. The values found significant were coded into ordinate data and Kendall’s Tau-B Test was done.Results: Statistically, significant correlation was found between depth of impacted mandibular 3Ms and facial angle, Y-axis,cant of occlusion, angle of convexity, and gonial angle.Conclusion: Greater incidence of 3Ms was found to be at position B and C in Class II patients as compared to Class I and IIIpatients. Furthermore, patients showing vertical growth pattern were found to have increased percentage of mandibular 3Mimpactions.
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Keywords
Beta angle, Bjork’s analysis, Down’s analysis, Facial growth pattern, Jarabak’s ratio, Lateral cephalogram,Third molar impactions, Third molar
Citation
Wabgaonkar Ojaswini V, Sheth Vidhi H, Kalra Dheeraj, Bhate Purvi. Association Of Impacted Third Molars With Facial Growth Patterns Among Adult Indian Patients - A Retrospective Study. International Journal of Scientific Study. 2019 Jan; 6(10): 55-61