Morphometric Analysis of Chin Shape in Inverted Mandible and Mid Symphysis Menti Angle

In human anatomy, the skull 's facial skeleton, the outer surface of the mandible, is distinguished by a slight ridge in the median line, suggesting the mandibular symphysis or junction line in which the two lateral halves of the mandible usually unite at an early life (1-2 years). This is not a true symphysis, since there is no cartilage between the mandible's two hands. The main aim of the study is to measure the mid symphysis menti angle in the inverted aspect. 30 unsexed dry human skulls were taken from the Department of Anatomy, Saveetha Dental College and Hospital. Protractor was used to measure the mid symphysis menti angle in the inverted aspect of the mandible. The average measurement of mid symphysis menti angle was 76.16 degrees and the shape of the mental protuberance for most of the samples were oval shaped. Our study has tried to analyse the mid symphysis menti angle and chin shape in the inverted aspect of mandibles, this data may be useful for surgeons in planning their surgery in the mandibular region.