A Comparative Study of External Gonial Angle Between Panoramic and Lateral Cephalometric Radiograph of Adult Patients with Class – 1 Malocclusion and to Determine It’s Cephalometric Value in Assamesse Population

---

Original Article

Author Details : Mitali Bora*, Shweta Singh Bijay, Kuldeep Phukon

Volume : 3, Issue : 2, Year : 2019

Article Page : 15-19

https://doi.org/10.18231/j.jco.2019.013

Suggest article by email

---

Abstract

INTRODUCTION: The external gonial angle which plays significant role in the diagnosis of craniofacial disorders is routinely measured from lateral cephalogram and orthopantogram. But how far these radiograph methods are reliable for the measurements of external gonial angle is a question which has been of much interest to investigators.
AIMS AND OBJECTIVES: To compare and discover any difference between the values of gonial angle obtained from the lateral cephalogram and orthopantogram and also between the values of the male and female.To determine the value of external gonial angle in Assamesse population.
MATERIALS AND METHOD: The study was conducted on the lateral cephalogram and orthopantogram of 30 female and 30 male patients having Class-I skeletal malocclusion within the age group of 18-30 years. Each lateral cephalogram and orthopantogram was traced twice and average value of each parameter was taken as the data.
RESULTS: In the study, the mean values of external gonial angle was 120.18 degree in panoramic radiograph and 121.75 degree in lateral cephalogram with no significant difference found in gonial angles obtained from lateral cephalogram and orthopantogram between two genders.
CONCLUSION: The Gonial angle is an important parameter of the craniofacial complex which gives an indication about the vertical parameters and symmetry of the facial skeleton which can be correctly measured by both lateral cephalogram and orthopantogram (OPG)
Keywords: Gonial angle, lateral cephalogram, orthopantogram(OPG), Assamesse population.

How to cite : Bora M, Bijay S S, Phukon K, A Comparative Study of External Gonial Angle Between Panoramic and Lateral Cephalometric Radiograph of Adult Patients with Class – 1 Malocclusion and to Determine It’s Cephalometric Value in Assamesse Population. J Contemp Orthod 2019;3(2):15-19

This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International, which allows others to remix, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.