Dental Anthropology on the Formation of Sundadont

牙科人类学对 Sundadont 形成的探讨

• 批准号: 09640838
• 负责人: KANAZAWA Eisaku
• 金额: $ 1.66万
• 依托单位: Nihon University School of Dentistry at Matsudo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640838/
• 关键词: dental anthropoloy; Sundadont; Mongoloid; Papua New Guinea; tooth size; dental arch; パプア・ニューギニア; 歯の形態; 人類学; 太平洋

1) Metric or non-metric measurement of Papua New Giniea Highlanders were carried out with the use of dental casts housed in Nihon University School of Dentistry at Matsudo.(1) Non-metric traits of the upper incisors including incisal tubercles and spinal process were observed with our scoring system. Highlanders had high frequencies of these traits as seen in Australian Aborigines. However, the frequency of shovel shaped incisor was low.(2) Other non-metric traits were also investigated in the comparison with some Pacific populations including Fiji, Samoa, Kiribati, Palau. The low frequency of 6th cusp were noted in New Guinea Highlanders.(3) Metric study of the cuspal area of the lower first molar demonstrated that distal cusps in Highlanders were significantly smaller than Australians. This suggested that the distal part of the first molar in Highlanders were reduced in their micro-evolution.2) Investigation on the dental characters in minorities in China living in Yunnan Province was conducted. Preliminary research was carried out in May, 1999 with Chinese researchers, Ji Xueping, Kunming Paleovertebrate Institute. The survey was held in Yuenjian in Yunnan Province from February 27 to March 8, 2000. Minority peoples are from Hani tribe and Dai tribe. Dental casts of 200 in total and dental caries frequency were taken from these tribes. Dental casts were now being measured in the laboratory.

1) 使用日本大学松户牙科学院的牙模对巴布亚新吉涅亚高地犬进行公制或非公制测量。(1) 使用我们的评分系统观察上切牙的非公制特征，包括切牙结节和脊椎突。正如澳大利亚原住民中所见，高地人具有很高的这些特征。但铲形门牙的出现频率较低。(2)在与斐济、萨摩亚、基里巴斯、帕劳等太平洋地区人群的比较中还考察了其他非公制特征。新几内亚高地人的第六牙尖频率较低。(3)对下第一磨牙牙尖面积的公制研究表明，高地人的远中牙尖明显小于澳大利亚人。这表明高地人第一磨牙远中部分的微进化有所缩短。2)对中国云南少数民族牙齿特征进行了调查。 1999年5月，中国昆明古脊椎动物研究所吉学平研究员进行了初步研究。此次调查于2000年2月27日至3月8日在云南省远建县进行。调查的少数民族为哈尼族和傣族。从这些部落中采集了总共 200 个牙模和龋齿频率。现在正在实验室中测量牙模。

项目成果

Kanazawa, E. et al: "Tooth size of people in Wabag : Papua New Guinea Highlanders"Anthropological Sciences. 107(印刷中). (2000)

Kanazawa, E. 等人：“瓦巴格人的牙齿大小：巴布亚新几内亚高地人”人类学科学 107（出版中）。

Igarashi, Y. et al.: "Size and shape of dental arch of Wabag people : Papua New Guinea Highlanders."Anthropological Science. 107 (in press). (2000)

Igarashi, Y. 等人：“瓦巴格人牙弓的大小和形状：巴布亚新几内亚高地人。”人类学科学。

Igarashi, Y. et al: "Size and shape of dental arch of Wabag people : Papua New Guinea Highlanders"Anthropological Sciences. 107(印刷中). (2000)

Igarashi, Y. 等人：“瓦巴格人牙弓的大小和形状：巴布亚新几内亚高地人”人类学科学 107（出版中）。

Kanazawa, E. et al.: "Tooth size of people in Wabag : Papua New Guinea Highlanders"Anthropological Science. 107 (in press). (2000)

Kanazawa, E. 等人：“瓦巴格人的牙齿大小：巴布亚新几内亚高地人”人类学科学。

Eisaku Kanazawa et al.: "Tooth size of living peoples in Western and Eastern Micronesian populatious"Anthropological Science. 106(3). 199-208 (1998)

Eisaku Kanazawa 等：“密克罗尼西亚西部和东部人口的牙齿大小”人类学。