Citation Information :
Kar B, Aggarwal I, Mittal S, Bhullar M, Singla D, Sharma A. Antegonial Notch and Mandibular Symphysis as indicators of Growth Pattern. 2018; 6 (2--3):80-88.
Introduction The knowledge of the nature and magnitude of growth and development of human face is important for sound diagnosis and treatment of dentofacial disharmonies. The depth of antegonial notch and morphology of mandible are important indicators of growth pattern.
Objective The purpose of this study was to evaluate the antegonial notch depth, mandibular symphysis morphology, and symphysis inclination in various facial types categorized into the normo-, hypo-, and hyperdivergent groups using various parameters.
Materials and Methods Pretreatment lateral cephalograms of 45 adult patients with age group between 16 and 30 years were taken. The antegonial notch depth, symphysis height, symphysis depth, ratio (height of symphysis/depth of symphysis), angulation of symphysis, and inclination of symphysis to mandibular plane were analyzed statistically.
Result It was found that the mandible with the hyperdivergent growth pattern was associated with an increased antegonial notch depth, increased symphysis height, reduced symphysis depth, large ratio, small symphysis angle, and large inclination angle of the symphysis.
Conclusion The results for the antegonial notch depth, symphysis height, symphysis depth, and ratio of symphysis height to symphysis depth were statistically significant whereas the angulation of the symphysis and inclination of the symphysis did not show statistically significant results.
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