Ateş Muzaffer, Karaman Feryal, Işcan Mehmet Yaşar, Erdem Tamer Lütfü
Istanbul University, Faculty of Dentistry, Istanbul, Turkey.
Leg Med (Tokyo). 2006 Oct;8(5):288-92. doi: 10.1016/j.legalmed.2006.06.003. Epub 2006 Oct 5.
Sexual variation in the human skeleton and dentition is of great concern for both anthropologists and odontologists. Assessment of variation in dental size gives a clue about the behavior of a population, and also differences between the sexes. This study deals with sexual differences in a Turkish sample of individuals ranging in age from 20 to 29 years. The sample is composed of 28 buccolingual (BL) and mesiodistal (MD) dimensions of upper and lower dentition (I1 through M2). Dental casts of 50 males and 50 females were analyzed using discriminant function statistics. The results indicated that 8 of the upper and 7 of the lower dimensions were significantly greater in males. Many of the differences were located in the anterior teeth of both jaws. In a stepwise function applied to both arches, the lower and upper canine BL, lower canine and P1 MD, and lower I2 BL were used as the most discriminating variables. When the front teeth (i.e., I1, I2, and C) are used in separate functions, only the canine BL of the lower jaw and I2 and C BL of the upper jaw were found to have the discriminating variables. Classification accuracy was 81% for the total sample, 76% for upper front and 81% for lower front teeth. In conclusion, dentition in Turkish people seems to be less sexually dimorphic than the populations with which they were compared (Jordanians, Swedish and South Africans) as was determined by the percent of accuracy obtained. In comparison with other populations, as anticipated, Turkish dental size is closest to the Jordanian sample and farthest from the South African whites.
人类骨骼和牙列的性别差异是人类学家和牙科学家都极为关注的问题。评估牙齿大小的差异能为了解一个群体的行为以及性别差异提供线索。本研究探讨了年龄在20至29岁之间的土耳其人群样本中的性别差异。该样本包括上下牙列（从I1到M2）的28个颊舌向（BL）和近远中向（MD）维度。使用判别函数统计分析了50名男性和50名女性的牙模。结果表明，男性在上颌的8个维度和下颌的7个维度明显更大。许多差异位于上下颌的前牙。在应用于上下牙弓的逐步函数中，下颌和上颌尖牙颊舌径、下颌尖牙和第一前磨牙近远中径以及下颌侧切牙颊舌径被用作最具鉴别力的变量。当分别对前牙（即I1、I2和C）进行函数分析时，仅发现下颌尖牙颊舌径以及上颌侧切牙和尖牙颊舌径具有鉴别变量。总样本的分类准确率为81%，上前牙为76%，下前牙为81%。总之，根据获得的准确率百分比确定，土耳其人的牙列似乎比与之比较的群体（约旦人、瑞典人和南非人）的性别二态性更小。与其他群体相比，不出所料，土耳其人的牙齿大小最接近约旦样本，离南非白人样本最远。
