The size and morphology of the Nasioi dentition.
The size and morphology of the Nasioi dentition.
复制标题
Nasioi 牙列的大小和形态。
DOI：
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发表时间：
1968
影响因子：
2.8
通讯作者：
R. Leigh
中科院分区：
文献类型：
--
作者：
H. Bailit;S. DeWitt;R. Leigh
对生活在布干维尔岛的美拉尼西亚人纳西奥伊240人进行了牙印。恒牙和乳牙的牙齿测量数据也被提出，乳牙也被检查形态。结果表明，南猿与其他南猿种群一样，具有较大的恒牙，而乳牙只有中等大小。恒齿的变异系数比其他种群大，但牙齿大小和变异的性别二态性不显著。
Dental impressions were obtained on 240 Nasioi, a Melanesian population living on the island of Bougainville. Odontometric data are presented for both the permanent and deciduous teeth, and the former teeth are also examined morphologically. The results show that the Nasioi have large permanent teeth like other Australoid populations whereas the deciduous teeth are only of moderate size. The coefficients of variation are large in the permanent teeth compared to other populations but the sexual dimorphism in tooth size and variability is not remarkable.
Morphologically, the permanent teeth of the Nasioi are characterized by a
cusp number pattern, a high frequency of the Dryopithecus + pattern on the first mandibular molar, few individuals with a Cusp of Carabelli, and a moderate expression of shovelled-shaped anterior teeth.