根据牙齿的多项增龄指标推断年龄的研究

【作者】 梁亚平；

【导师】 王英元；

【作者基本信息】 山西医科大学 ， 法医学， 2003， 硕士

【摘要】 目的：本课题旨在探讨牙齿的多种增龄性变化与年龄之间的关系，寻求一种简便且准确的推断牙龄的方法，而为特异型尸体司法鉴定时根据牙齿判断年龄提供证据，也为人类学研究积累资料。 方法：从山西医科大学法医学院及口腔医院收集的636磨牙(无龋坏、无根尖病变)分为Max1、Max2、Man1、Man2四组，根据牙齿的增龄变化特点，筛选了5个与牙龄变化密切相关的指标(牙齿的磨耗、接触区面积、牙本质髓室指数、根尖牙骨质的厚度、根尖牙本质透明)，提出了指标的分级标准和评分标准，对各组的牙齿测量后进行数据处理和统计分析。 结果：牙齿的磨耗、接触区面积、牙本质髓室指数、根尖牙骨质的厚度、根尖牙本质透明均反映出与年龄高度相关关系，用这5个指标与年龄所建立的判别年龄的多元回归方程经统计学分析，回归高度显著。将全部样本进行计算机方程回代检验，达到了设计与统计学要求。山祖穿医斗斗大学祠眨士学位论文 结论:本研究证实了该5项指标与年龄的高度相关关系，获得了一个判别年龄的多元回归方程，为司法鉴定提供了客观的依据。更多还原

【Abstract】 Objective: This subject aims to study the relationship between various dental changes accompanied by age increase and the age, and seek a simple and convenient and accurate way to judge the dental age; so that basis can be provided to judge the age according to teeth in expert testimony and data can be accumulated for anthropological research. Methods: we have divided the 636 molars (without dental caries or pathological changes of root) collected in school of Forensic Medicine and Stomatological hospital in shanxi Medicine university into four groups: Maxl, Max2, Manl, Man2, and selected 5 indexes closely related to changes of dental age (dental attrition, contact area, the index of dentine marrow cavity, the thickness of cementum of root, the diaphaneity of dentine of root), and proposed the grading standard and scoring standard date processing and statistical analysis after measuring the teeth of the four groups.Results: All the five indexes (dental attrition, contact area,the index of dentine marrow cavity, the thickness of cementum of root, the diaphaneity of dentine of root) revealed a highlyinterrelated relationship with age. Regression height was significant when the multiple regression equation, which was formulated with these five indexes and age and used to judge the age was statistically analyzed. Test all the samples with the equation in the computer, the accordance ratio fulfilled the planned and statistical requirements.Conclusion: this research confirmed the highly interrelated relationship between these 5 indexes and age, and gained a multiple regression equation used to judge the age, and provided objective basis for expert testimony.更多还原