Paramkusam Geetha, Nadendla Lakshmi Kavitha, Devulapalli Revath Vyas, Pokala Archana
Department of Oral Medicine and Radiology, Kamineni Institute of Dental Sciences, Sreepuram, Narketpally, Nalgonda, Andhra Pradesh, India.
Indian J Dent Res. 2014 Jul-Aug;25(4):425-9. doi: 10.4103/0970-9290.142514.
Teeth are excellent material for anthropological, genetic and odontologic investigations in both living and dead population. Canines are the ideal teeth for identification of sex, due to its sexual dimorphism and durability in the oral cavity. This study tests the effectiveness of the canine tooth in predicting sex of an individual.
This study involved 60 males and 60 females between the age group of 20-30 years. Mesio-distal (MD) widths of maxillary and mandibular right and left canines and inter-canine distance of both arches were measured clinically and on cast for all patients. Standard canine indices were derived from these dimensions and tested for sexual dimorphism and reliability of canine teeth in gender determination by comparison with the known gender of the population under investigation.
All measurements showed significant sexual dimorphism. Standard mandibular canine index (CI) was found to be more reliable in gender estimation than the MD width of canine and CI values.
Use of the standard mandibular CI in gender determination is recommended for forensic procedures as it was found to have an acceptable accuracy. MD width of canine may be used in a setup when only the single tooth or a fragment of a jaw is available for analysis, with due consideration to its relatively low accuracy.
牙齿是对活体和死亡人群进行人类学、遗传学及牙科学研究的优质材料。犬齿因其性别差异及在口腔中的耐久性，是鉴定性别的理想牙齿。本研究旨在测试犬齿在预测个体性别方面的有效性。
本研究纳入了60名年龄在20至30岁之间的男性和60名女性。对所有患者的上颌和下颌左右犬齿的近远中（MD）宽度以及两个牙弓的犬齿间距离进行了临床测量和模型测量。从这些尺寸得出标准犬齿指数，并通过与所研究人群的已知性别进行比较，测试犬齿在性别鉴定中的性别差异和可靠性。
所有测量均显示出显著的性别差异。发现标准下颌犬齿指数（CI）在性别估计方面比犬齿的MD宽度和CI值更可靠。
鉴于标准下颌CI被发现具有可接受的准确性，建议在法医程序中使用其进行性别鉴定。当仅有单颗牙齿或颌骨碎片可供分析时，可考虑使用犬齿的MD宽度，但需注意其准确性相对较低。
