牙列拥挤与牙冠宽度比例关系的探讨

Study on the Proportion Relation between Gental Crown and Crowded Dentition

作者对158例牙列拥挤患者的牙冠宽度进行了测量,得出Angle各类错(牙合)的比例数值,并对不同性别的错(牙合)牙冠宽度比例及正常(牙合)和错(牙合)牙冠宽度比例作了统计学分析。本文结合典型病例对下述问题进行了讨论:①牙冠宽度比例失调与牙量骨量不调的临床判断;②牙冠宽度比例失调在病因学中的位置:③简化临床诊断的方法;④尚待研究的问题。

Proportion discrepancies of the dental crown width is one of the important factors of forming crowded dentition. The crown width was measured in 158 cases with crowded dentition and the proportion data of various Angles classification of malocclusion were obtained. The proportion of malocclusion crown in male and female cases and the proportion between normal occlusionand malocclusion were analyzed statistically. Typical cases were used to discuss the following problems: 1, the clinical evaluation of the proportional discrepancies of dental crown width and discrepancies of dental quantity and osseous volume, 2, the role of proportional discrepancies of dental crown width in etiology. 3, Simplicity of the methods of clinical diagnosis, and. 4, Some problems to be studied.