On the Sexual Differences in the Dimensions of the Human Teeth
On the Sexual Differences in the Dimensions of the Human Teeth
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论人类牙齿尺寸的性别差异
DOI：
10.1537/ase1911.67.151
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发表时间：
1959
期刊：
影响因子：
--
通讯作者：
K. Gonda
中科院分区：
文献类型：
--
作者：
K. Gonda
测量了 3000 多颗雄性牙齿和大约相同数量的雌性牙齿的各种尺寸，例如牙冠长度、牙冠宽度、牙冠厚度、牙根长度和总长度。测定中采用藤田标准方法。通过对数据的统计处理，得到以下结果：（1）总体上，男性的牙齿尺寸在每颗牙齿的各个尺寸上均大于女性。（2）但上第三磨牙的牙根长度是一个例外，女性明显超过男性。女性下第三磨牙的牙根长度也优于男性，但差异在统计学上并不显着。(3)各种牙齿大小的性别差异并不相同。上、下犬齿最为明显，而上、下颌切牙和前磨牙差异较小。(4)牙齿各尺寸表现出不同程度的性别差异。根长最大，冠宽最小。(5)与身高、体重等一般体质的性别差异相比，牙齿的性别差异程度稍小，而根长较大。(6)目前尚不清楚上述性别差异的含义。可以推测，雄性较大的犬齿代表了动物王国中普遍存在的显着性别差异的系统发育痕迹。
Various dimensions such as crown length, crown width, crown thickness, root length and total length were measured in more than 3000 male teeth and in about the same number of female teeth. In the measurement, FUJITA'S standard method was employed. Through statistical treatments of the data, following results were obtained:(1) In general, the tooth size is larger in the male than in the female in every dimension of every tooth.(2) However, root length of the upper third molar presents an exception inasmuch as the female significantly surpasses the male. The lower third molar of the female is also superior to that of the male in its root length, although the difference is statistically not significant.(3) The sexual differences in size are not the same for all sorts of the teeth. It is most conspicuous in the upper and lower canines, while the incisors and the premolars show less difference both in the upper and the lower jaws.(4) Each dimension of the tooth shows different degree of sexual difference. It is greatest in root length and smallest in crown width.(5) As compared with the sexual differences in general constitution such as stature, body weight etc., the degree of the sexual differences of the teeth is somewhat smaller, whereas it is larger in root length.(6) It is not yet clear what the mentioned sexual differences mean. It might be surmized that the larger canine of the male represents the phylogenetical trace of the striking sexual difference prevailing in the animal kingdom.