Lavelle C L
J Craniofac Genet Dev Biol. 1985;5(2):159-65.
There is a growing realization that traditional osteometric data are of uncertain scientific validity, primarily due to the lack of dissociation between size and shape parameters. This study was specifically based on the metrical definition of mandibular morphologic shape, using a technique termed medial axis transformation. It was based on the digitized mandibular outlines of three age-sexed samples of microcephalics, macrocephalics, and normocephalics. Evaluation of the derived medial axis lengths and branch point distances indicated complex patterns of mandibular shape contrasts between microcephalics and macrocephalics on the one hand and normocephalics on the other. Although larger more homogeneous samples are required to evaluate the specific factors influencing mandibular shape, the present data suggest an association between mandibular shape and cranial form.
人们越来越意识到，传统的骨测量数据的科学有效性存在不确定性，主要原因是尺寸和形状参数之间缺乏区分。本研究特别基于下颌形态形状的度量定义，采用了一种称为中轴线变换的技术。它基于小头畸形者、大头畸形者和正常头型者三个年龄性别样本的数字化下颌轮廓。对得出的中轴线长度和分支点距离的评估表明，一方面小头畸形者和大头畸形者之间，另一方面与正常头型者之间，下颌形状对比呈现出复杂的模式。尽管需要更大、更同质的样本才能评估影响下颌形状的具体因素，但目前的数据表明下颌形状与颅骨形态之间存在关联。
