Zilberman U, Smith P
Department of Anatomy and Embryology, Dental School of Medicine, Hebrew University, Hadassah Ein Karem, Jerusalem, Israel.
J Anat. 1992 Jun;180 ( Pt 3)(Pt 3):387-93.
Tooth components of 1st and 2nd erupted permanent molars were measured from standardised radiographs of Homo sapiens sapiens and Homo sapiens neanderthalensis. Enamel height was greater in Homo sapiens sapiens but pulp height and width and the height of the enamel to floor of the pulp chamber were greater in Homo sapiens neanderthalensis. Dentine height, crown width and enamel width showed similar results in the two groups. Unerupted first molars were measured to analyse the influence of function on tooth components and the results obtained were always within the range measured for the erupted teeth. Discriminant analysis between groups, using tooth components, showed accuracy of 93% for identification of Homo sapiens sapiens and 94% for identification of Homo sapiens neanderthalensis. The results support the hypothesis of a distinct evolutionary line for the Neanderthals.
从智人和尼安德特人的标准化X光片中测量了第一颗和第二颗萌出恒牙的牙齿组成部分。智人的牙釉质高度更高，但尼安德特人的牙髓高度、宽度以及牙釉质到牙髓腔底部的高度更大。两组的牙本质高度、牙冠宽度和牙釉质宽度结果相似。对未萌出的第一磨牙进行测量以分析功能对牙齿组成部分的影响，所获结果始终在萌出牙齿的测量范围内。使用牙齿组成部分进行的组间判别分析显示，识别智人的准确率为93%，识别尼安德特人的准确率为94%。这些结果支持了尼安德特人有独特进化路线的假说。
