Effect of Age and Sex: Antegonial and Gonial Notch of Mandible

Abstract

The morphological change in the antegonial region has received little attention in literature. A few studies focused on the mandibular angle, its alternations throughout aging, and changing relation to dental status. Their results were variable and inconsistent1,2, even using similar methodologies. Casey and Emrich3 compared the changes in genial angle in patients who were edentulous on one side of the arch and dentate on the other side of arch. They found no statistically significant differences between the edentulous and dentate sides. They also compared dentulous and edentulous men using panoramic radiographs. Their results suggested a slight widening of the mandibular angle in the edentulous patients. The aim of this study was to evaluate the changes in the antegonial angle, antegonial depth and gonial angle in 10 to 45 years old age groups and between genders. Panoramic radiographs of patients (M:F, 52:57), aged 10 years to 45 years from Oral Radiology Department of Government Dental College associated with Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak (Haryana) India, were examined. Only radiographs with good quality were used. Patient with fractures, post surgical and with any skeletal deformities were excluded from study. The examiner performed all measurements (in centigrade) with digital angle measurement instrument after tracing of parameter's. The following measurements were made: