We compare the incidence of 25 nonmetric dental traits of the people of the Neolithic Dawenkou culture (6300-4500 BP) sites in Shandong Province, North China with those of other East Asian populations. The Dawenkou teeth had an overwhelmingly greater resemblance to the Sinodont pattern typical of Northeast Asia than to the Sundadont pattern typical of Southeast Asia. Multidimensional scaling using Smith's mean measure of divergence (MMD) statistic place the Dawenkou sample near the Amur and the North China-Mongolia populations in the area of the plot indicating typical Sinodonty. The existence of the Sinodont population in Neolithic North China suggests a possible continuity of Sinodonty from the Upper Cave population at Zhoukoudian (about 34000-10000 BP) to the modern North Chinese. The presence of Sinodonty in Shandong Province shows that the Japan Sea and East China Sea were strong barriers to gene flow for at least 3000 years, because at this time the Jomonese of Japan were fully Sundadont. In addition, we suggest that the descendants of the Dawenkou population cannot be excluded as one of the source populations that contributed to sinodontification in Japan.

中文翻译：

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华北大汶口新石器时代人群的牙齿形态：对中华牙髓起源和分布的影响。

我们比较了华北山东省的新石器时代大汶口文化（6300-4500 BP）遗址的25种非度量性牙齿特征的发生率，并与其他东亚人口进行了比较。大汶口齿与东北亚典型的锡诺多特模式比东南亚典型的Sundadont模式具有极大的相似性。使用史密斯的平均散度测量（MMD）统计量表进行多维标度，将大汶口样本放在阿穆尔河附近，并将华北-蒙古族人口放在该图区域中，以显示典型的中华绒螯蟹。华北新石器时代锡诺氏种群的存在表明，从周口店上层洞穴人口（约34000-10000 BP）到现代华北地区，可能存在连续性的锡诺敦性。在山东省存在中华绒螯蟹表明，日本海和东海在至少3000年中一直是阻碍基因流动的强大障碍，因为此时日本的日本人完全是Sundadont。另外，我们建议不能将大汶口人口的后裔排除为日本正齿化作用的起源人口之一。