다변량해석기법을 활용한 치아 교모도에 의한 연령추정 = Age Estimation from Tooth Attritions by Multivariate Analysis

다국어 초록 (Multilingual Abstract)

The use of physiologic changes of teeth is comparatively definite to estimate age for old people who had stoped the growth and development. among many physiological indicators, tooth attritions is visible to naked eye and does not need any damage of submect and has close relationship to age. The author examined tooth attritions and dental restorations of 229 subjects, and degrees of the attrition of all teeth was judged 5 categories according to the method by Takei.
Multivariate analysis was applied for the Mathematico-Statistical means. The results were as follows :
1. Four calculators for age estimation by attrition value were given in case that 28 all teeth were used, and 14 maxillary teeth were used, and 14 mandibular teeth were used, and maxillary and mandibular 14 teeth were used.
2. Partial correlation coefficients of each tooth were calculated in order to show that which tooth is more contributive to age estimation. In case that the 28 all teeth were used, 2?? premolar was the most contributive to age estimation and 1?? molar, incisor, 2?? molar, lateral incisor, canine, 1?? premolar, respectively.
3. For more accurate age estimation, calculator by 28 teeth is recommendable to person who has comparatively more dental restoration, and calculator by maxillary and mandibular 14 teeth is recommendable to person who has less dental restoration and missing tooth.