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Sinodonty and Sundadonty are two patterns of features widely found in the dentitions of different populations in East Asia. These two patterns were identified by anthropologist Christy G. Turner II as being within the greater "Mongoloid dental complex".〔G. Richard Scott, Christy G. Turner, (2000). ''(The Anthropology of Modern Human Teeth: Dental Morphology and Its Variation in Recent Human Populations )''. Cambridge University Press. ISBN 0521784530〕 Sundadonty is regarded as having a more generalised, Australoid morphology and having a longer ancestry than its offspring, Sinodonty. The combining forms ''Sino-'' and ''Sunda-'' refer to China and Sundaland, respectively, while ''-dont'' refers to teeth. ==Description== Turner found the Sundadont pattern in the skeletal remains of Jōmon people of Japan, and in living populations of Taiwanese aborigines, Filipinos, Indonesians, Thais, Borneans, Laotians, and Malaysians. By contrast, he found the Sinodont pattern in the Han Chinese, in the inhabitants of Mongolia and eastern Siberia, in the Native Americans, and in the Yayoi people of Japan. The Australoids and Negrito are neither Sinodont or Sundadont. Sinodonty is a particular pattern of teeth characterized by the following features: * The upper first two incisors are not aligned with the other teeth, but are rotated a few degrees inward and are shovel-shaped. * The upper first premolar has one root (whereas the upper first premolar in Caucasians normally has two roots), and the lower first molar in Sinodonts has three roots (whereas it has two roots in Caucasoid teeth). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sinodonty and Sundadonty」の詳細全文を読む スポンサード リンク
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