Grewal Dilpreet Singh, Khangura Rajbir Kaur, Sircar Keya, Tyagi Krishan Kumar, Kaur Gurkirat, David Simon
Reader, Department of Prosthodontics, Genesis Institute of Dental Sciences and Research, Ferozepur, Punjab, India.
Reader, Department of Oral Pathology, Genesis Institute of Dental Sciences and Research, Ferozepur, Punjab, India.
J Clin Diagn Res. 2017 Aug;11(8):ZC09-ZC13. doi: 10.7860/JCDR/2017/26680.10341. Epub 2017 Aug 1.
In contemporary human population, males exhibit larger size of dentition as compared to females. Additionally, these odontometric parameters show variation in members of same species and also show regional variation.
To evaluate sexual dimorphism of four maxillary odontometric parameters such as Intercanine Width (ICW), Interpremolar Width (IPW), Arch Length (AL) and Combined Width (CW) of six maxillary anterior teeth, to determine percentage of sexual dimorphism of all four odontometric parameters singly or in combination and also to determine sensitivity, specificity and overall accuracy of odontometric parameters for sex determination.
This cross-sectional study was conducted on 200 subjects (100 males, 100 females). Four odontometric parameters ICW, IPW, AL and CW were measured directly on the subject and the data thus collected was subjected to statistical analysis.
Discriminant statistical analysis (d square test) revealed that all the four odontometric maxillary parameters exhibited greater mean values in males as compared to females. The difference was found to be statistically highly significant (p<0.001) for ICW and IPW for sexual dimorphism. Also, combination of parameters such as ICW, IPW further improved assessment.
The study concluded that linear odonotometric parameters ICW, IPW along with AL, CW show significant sexual dimorphism. Hence, odontometric parameters offer simple, reliable and cost-effective way of determining sex in any forensic investigation.
在当代人群中，男性的牙列尺寸比女性大。此外，这些牙测量参数在同一物种的个体中存在差异，并且也表现出区域差异。
评估上颌四个牙测量参数的性别二态性，即六个上颌前牙的犬齿间宽度（ICW）、前磨牙间宽度（IPW）、牙弓长度（AL）和联合宽度（CW），确定这四个牙测量参数单独或组合时的性别二态性百分比，并确定牙测量参数用于性别判定的敏感性、特异性和总体准确性。
本横断面研究对200名受试者（100名男性，100名女性）进行。直接在受试者身上测量四个牙测量参数ICW、IPW、AL和CW，并对收集到的数据进行统计分析。
判别统计分析（d平方检验）显示，与女性相比，男性的所有四个上颌牙测量参数的平均值都更大。发现ICW和IPW在性别二态性方面的差异具有高度统计学意义（p<0.001）。此外，ICW、IPW等参数的组合进一步改善了评估效果。
该研究得出结论，线性牙测量参数ICW、IPW以及AL、CW显示出显著的性别二态性。因此，牙测量参数为任何法医调查中的性别判定提供了简单、可靠且经济有效的方法。
