Mehta Sakshi, Kaur Sukhleen, Verma Pradhuman, Khosa Rameen, Sudan Madhu, Kaur Harpreet
Department of Oral Medicine and Radiology, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
Indian J Dent Res. 2017 Sep-Oct;28(5):482-486. doi: 10.4103/ijdr.IJDR_606_16.
The aim is to evaluate existence of sexual dimorphism by variation in right and left permanent maxillary molars using buccolingual width (BLW) and mesio-distal width (MDW) measured intraorally and on study casts among Sri Ganganagar population.
Fifty patients (25 males and 25 females) with 17-25 years of age were selected. Impressions of maxillary arch were taken and the BLW and MDW were measured using digital Vernier calipers on study casts and intraorally.
Highly significant correlation was found between MDW and BLW of both the maxillary permanent first molars for both genders (P < 0.05) intraorally. The MDW and BLW on study cast of both sides in both gender were more on left side in males while on right side in females.
Left maxillary permanent first molar showed minimum mean difference of measurements on study cast and introrally than right, thus better predictor for gender dimorphism in forensics.
本研究旨在通过测量斯里甘加纳格尔人群口内及研究模型上左右上颌恒牙磨牙的颊舌径（BLW）和近远中径（MDW）的差异，评估性二态性的存在情况。
选取50例年龄在17至25岁之间的患者（25例男性和25例女性）。取上颌牙弓印模，使用数字游标卡尺在研究模型和口内测量BLW和MDW。
口内测量时，两种性别的上颌第一恒磨牙的MDW和BLW之间均存在高度显著相关性（P < 0.05）。在研究模型上，男性两侧的MDW和BLW左侧均大于右侧，而女性则相反。
上颌左侧第一恒磨牙在研究模型和口内测量的平均差异比右侧小，因此在法医学中是更好的性别二态性预测指标。
