Infer The Age Of The Teeth Of A Number Of Aging Indicators

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.