Morphological significance of root length variability in comparison with other crown dimensions. I. Basic statistics and sex difference.
Morphological significance of root length variability in comparison with other crown dimensions. I. Basic statistics and sex difference.
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与其他冠尺寸相比，根长变异的形态学意义。
DOI：
10.2334/josnusd1959.29.233
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
E. Kanazawa
中科院分区：
文献类型：
--
作者：
T. Ozaki;T. Satake;E. Kanazawa
虽然已经进行了许多关于树冠尺寸的变异性和相关性的研究[1，2，3，9，13，14，16]，但关于树根测量的报道很少。据说，与牙冠尺寸相比，牙根长度的个体差异很大[8]，因为牙根发育晚于牙冠，延伸到发育中的下颌骨或上颌骨，这可能控制牙根的形成和生长。牙冠的形状更多地是由遗传决定的，但牙根的形状在很大程度上受到牙槽骨发育过程中的生理环境的影响。然而，没有关于根在个体内和个体之间的变异性的确切数据。本文介绍了根长和其他牙齿尺寸的基本统计研究的结果，这被认为是理解根长变异性和作为进一步多变量分析的基础所必需的。
Although many studies on variability and correlation in crown dimensions have been done[1, 2, 3, 9, 13, 14, 16] there are few reports available on root measurements. Root length has been said to be quite variable individually compared with crown dimensions[8], because the root develops later than the crown, extending to grow into the developing mandible or maxilla which can potentially control the formation and growth of the root. The form of the crown is more genetically determined, but that of the root is much influenced by the physiological circumstances of the alveolar bone during development. However, there are no exact data available on root variability within an individual and among individuals. We present in this paper the results of a basic statistical study of root length and other tooth dimensions, which was considered necessary for an understanding of root length variability and to serve as a basis for further multivariate analysis.