Morphometric analysis of articular eminence of temporomandibular joint in Indian Ethinicity- A cone beam computed tomography study

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Original Article

Author Details : Akhilanand Chaurasia, Gaurav Katheriya, Ranjitkumar Patil

Volume : 2, Issue : 4, Year : 2016

Article Page : 196-202

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Abstract

Objective: The objective of present study is to assess the age and gender related changes in articular eminence inclination by best fit line method and top roof line method. This study is also implemented to predict the age of subjects on the basis of inclination angle by best fit line method and top roof line method.
Material and Methods: The CBCT scan of 206 subjects were used in present study. The cone beam images (Scans) were obtained from Care stream 9000cc (USA) CBCT machine at 90 Kvp,4 mA for 6.3 seconds at FOV 17x6 and voxel size of 200.The TMJ was defined on 0.5 mm-thick axial slices. One of the axial views on which the condylar processes were seen with their widest mediolateral extent was used as a reference view for secondary reconstruction. The lateral slices of the TMJ were performed perpendicular to the long axis of the condylar process with 1mm thickness and the coronal slices were performed parallel to the long axis of the condylar process with 1mm thickness on the selected axial image.
Results: The articular eminence inclination was statistically significant in males and females in both best fit line method and top roof line method. By Best fit line method, it was found that highest articular eminence inclination was 52.31±16.08⁰ in age group 31-40 years while it was lowest 49.02±12.49⁰ in age group 41-50 years. However by Top roof line method, it was found that the articular eminence inclination was highest 33.16±8.66⁰ in age group 21-30 years and lowest 31.50±8.92⁰ in 31-40 years.The co-relation between age groups and articular eminence inclination by Best fit line method was stastically significant.
Conclusion: Age plays an important role in articular eminence inclination by top roof line method and best fit line method. The age of an individual can be predicted if eminence inclination angle is known.

Keywords: Temporomandibular Joint, Best fit line method, Top roof line method, CBCT

How to cite : Chaurasia A, Katheriya G, Patil R, Morphometric analysis of articular eminence of temporomandibular joint in Indian Ethinicity- A cone beam computed tomography study. J Oral Med Oral Surg Oral Pathol Oral Radiol 2016;2(4):196-202

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