玛雅Tzutujil儿童牙齿磨损——一项基于纵向材料的研究。

Abreu Tabarini, S. Hamilton
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引用次数: 0

摘要

本研究的目的是通过测量面部生长,牙齿脱落和萌牙期间所有类型牙齿的磨损量来评估牙齿磨损。使用了7名男性和7名女性玛雅Tzutujil印第安儿童的牙模和脑电图。研究发现,纵向和横向面部生长的增加与乳牙、第一磨牙和第二磨牙、恒门牙和第一磨牙的磨耗增加有关。在恒牙第一磨牙出牙期间,乳牙第二磨牙的磨耗显著增加;在恒牙和第一磨牙出牙期间,两种牙弓和两性的磨耗均显著增加。结果表明,磨耗的作用是1)补偿面部生长过程中垂直和水平尺寸的增加,2)在出牙和咬合发育过程中调节咬合面。此外,还建立了一个磨耗指数来评估牙齿之间的磨耗。这个指数将来可以用于不同人群之间的比较。通过使用磨耗指数对I类、II类和III类磨牙关系进行比较,展示了如何使用磨耗指数来更好地了解牙齿磨耗的特征模式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dental attrition of Mayan Tzutujil children--a study based on longitudinal materials.
The purpose of this study was to evaluate dental attrition by measuring attrition volume on all types of teeth during facial growth, tooth shedding and eruption. Dental casts and cephalograms of 7 male and 7 female Mayan Tzutujil Indian children were used. Relationships were found between increase in vertical and horizontal facial growth and increase in attrition on the deciduous canines, first and second molars, permanent incisors and first molars in both arches and in both sexes. Significant increases in attrition were found on the deciduous second molars during eruption of the permanent first molars, and on the permanent incisors and first molars during eruption of the second molars in both arches and in both sexes. The results suggest that the function of attrition is 1) to compensate for increase in vertical and horizontal dimensions during facial growth, and 2) to adjust the occlusal surfaces during tooth eruption and occlusal development. In addition, an attritional index was developed to evaluate attrition among teeth. This index could be used in the future to make comparisons among different populations. Comparisons were made among Class I, II and III molar relations by using the attritional index, showing how it can be used to gain a better understanding of the characteristic patterns of dental attrition.
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