Mosmi Lomi

Abstract

Introduction: Sex may be determined from various parts of the human body like the skull remains, femur, humerus etc. However, in forensic cases, when human skeletal remains (such as skull, pelvis, femur, humerus, radius, clavicle, and ulnae etc.) are fragmented or incomplete, the teeth may be used for sex determination. The aim and objective of the present study: i) To assess the degree of sexual dimorphism in maxillary canines, first premolars and first molars using diagonal diameters of the crown (mesiobuccal-distolingual: MBDL, mesiolingual–distobuccal: MLDB/ DBML). ii) To determine the accuracy of maxillary canines, first premolars and first molars using diagonal measurements of the crown in sex determination. Materials and Methods: This study included 30 participants with equal gender ratio i.e 15 males:15 females and age ranged from 18 to 30 years. The participants were selected from Pondicherry population who visited to our department. Crown diagonal measurement of canines, first premolars and first molars were taken from right and left sides with the help of digital caliper (resolution of 0.1mm, accuracy of ±0.2mm). Data was analysed statistically usingdescriptive analysisand discriminant function analysis. Results: All crown diagonal dimensions in male revealed higher mean value than female except left premolar MBDL crown dimensions (male=7.8600, female=7.8733). There was significant difference in mean value of MBDL crown dimension of left canine, left first molar and right first molar between males than females. MBDL crown dimension of left maxillary canine exhibited the highest accuracy (66.7%) for sex determination with 60% in males and 73.3% in females. Conclusion: We conclude that diagonal crown (MBDL crown) dimension of left maxillary canine and first molar, right maxillary first molar can be used as an aid for gender determination where linear crown width (MD and BL) measurements cannot be taken or used as an aid along with other accepted procedures for sex determination in Pondicherry cohort.   Keywords: Canine, First premolar, First molar, Sexual dimorphism, Diagonal dimension, Sex determination, MBDL, MLDB, DBML

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Abstract

Introduction: Determining gender is one of the most important procedure in forensics. Teeth are made of the most enduring mineralized tissues in the body, as such, they have an extraordinary resistance to putrefaction and the effects of external agents (physical, thermal, mechanical, chemical or biological) which makes them invaluable material for anthropological, genetic, odontologic and forensic examinations. Aim and Objective: i) To assess the degree of sexual dimorphism in maxillary canine using maxillary canine index, maxillary first molar and central incisor using mesiodistal (MD) and buccolingual/buccopalatal (BL) dimensions of the crown. ii) To determine the accuracy of maxillary canine index, first molar and central incisor dimensions (mesiodistal and buccolingual/buccopalatal) in determining sex. Materials and Methods: This study consisted of total 30 participants (males=15, females=15) of age group ranging from 20 to 35 yrs. Measurement of dimensions of selected teeth were performed on maxillary cast using digital Vernier caliper, resolution 0.01mm. Data thus obtained were analyzed statistically. Results: The mean values of all the measurements in males were greater than females. There was statistical significant difference in mean value of bucco-lingual width of molar, mesiodistal width of canine (on left side, right side and average) and the inter-canine distance between males and females. The buccolingual width of molar showed the highest % of sexual dimorphism (5.33%) and the mesiodistal width of molar showed the least % of dimorphism (0.7%). Bucco-lingual width of molar posed the highest prediction accuracy for gender determination. Conclusion: We conclude that buccolingual width of maxillary first molar can be used to predict the gender when only teeth of maxillary arch are available for forensic examination.   Keywords: Canine index, First molar, Gender determination, Sexual dimorphism.

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Abstract

Ameloblastoma is a benign odontogenic neoplasm which exhibits a locally aggressive behaviour. It commonly affects the mandible and seen in third to fifth decades of life. In most cases, an ameloblastoma is usually asymptomatic and may be detected during the course of routine radiographic examination. Radiographically, it may have a unilocular or multilocular appearance, which is usually well defined and have corticated margin in the mandible whereas ill-defined in case of maxilla. In this case series, we report 3 cases of ameloblastoma of the mandible. Keywords: Ameloblastoma, mandible, Multilocular radiolucency, Bicortical expansion.

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