ESTIMATION OF AGE FROM DRY HUMAN MANDIBLES AND CORRELATION OF AGE WITH MANDIBULAR PARAMETERS

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ESTIMATION OF AGE FROM DRY HUMAN MANDIBLES AND CORRELATION OF AGE WITH MANDIBULAR PARAMETERS

Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2018, Vol 7, Issue 36

Abstract

BACKGROUND Age determination from a human bone is an important role in forensic as well as anthropology study fields. As mandible is one of the largest and hardest of facial bones, it commonly resists post-mortem damage, hence is an important source for age assessment. The aims of the study are1. To estimate age of 100 dry human mandibles by using mandibular parameters, i.e. Gonial angle, Length of ramus, Bigonial width and Bicondylar breadth. 2. To correlate age with the mandibular parameters. MATERIALS AND METHODS The descriptive study of 100 dry human mandibles were collected from Department of Anatomy and from 1st phase MBBS students of 2017 batch, MRMC, Kalaburgi, Karnataka. Mandibles were first separated as male and female mandibles by using morphological features. 1. Eversion/ Inversion of gonial angle. 2. Prominence of muscular markings. After these mandibles were divided into various age groups by using the inference from other author’s study done on mandibles in living subjects based on degree of gonial angle, further readings were subjected to statistical analysis. RESULTS There was statistically very highly significant difference of mean right and mean left gonial angle in degrees in age groups (p<0.001). Mean of right and left gonial angle were significantly higher in higher age groups. There was statistically very highly significant difference of mean length of right ramus and mean length of left ramus in cms in age groups (p < 0.001). Mean length of right and left ramus were significantly lower in higher age groups. There was no statistically significant difference of mean bicondylar breadth and mean bigonial width in cms in age groups (p > 0.05). Study reveals highly significant positive correlation between age and gonial angle (p < 0.01). Higher the mandibular angle with respect to age is also higher. There is highly significant negative correlation between age and length of ramus (p < 0.01). Lower the length of ramus with respect to age is higher. There is no significant correlation between age and bicondylar breadth and bigonial width. Mean of all parameters were taken. The observations were recorded and subjected to statistical analysis of One-Way ANOVA test and age was estimated using regression equation. CONCLUSION The result concluded that mandibular angle and length of ramus can be effectively used in identification of age.

Authors and Affiliations

Humaira Zainab, Veer Bhadrappa Nandyal

Keywords

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EP ID EP545112
DOI 10.14260/jemds/2018/899
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