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(三)年龄推断,可以根据骨骼、皮肤皱纹的形成和牙齿等。在法医牙科学范围内,可以根据腭缝融合情况、下颌角角度、牙齿发育、牙齿结构的改变等进行推断。 1.腭缝的年龄变化:腭缝分为切牙缝、腭横缝及腭中缝的前部和后部。腭缝随着年龄的增长而逐渐融合。根据中国汉族腭缝的研究,可用下述方法对腭缝年龄变化进行判定。首先,根据腭缝融合情况进行分级评分: 0级:腭缝未见融合; Ⅰ级:腭缝融合<1/2; Ⅱ级:腭缝融合达到1/2,但<2/3; Ⅲ级:腭缝融合达到2/3以上; Ⅳ级:腭缝完全融合。其次将上述腭缝四部分的评分相加,即获得综合评分。根据综合评分查对下表,便可得到所推断的年
(C) age inferred that can be based on the formation of bones, skin wrinkles and teeth. In the forensic dentistry range, can be based on the fusion of the palate, mandibular angle, tooth development, tooth structure changes were inferred. 1. Age changes in palatal suture: palatal suture is divided into incisors, palatal sutures and palatal suture anterior and posterior. Palate joints gradually merge with age. According to the study of Chinese Han palate, the following methods can be used to determine the change of palatal age. First, grade grading according to the fusion of palatal fossa: grade 0: no fusion was found in palatal fossa; grade I: palatal fusions <1/2; grade II: palatal fusions reached 1/2, but <2/3; grade III : Palate suture fusion to 2/3 or more; Ⅳ grade: complete fusion of the palate. Followed by the palate suture four parts of the score together, that is, to obtain a comprehensive score. According to the comprehensive score check the following table, you can get the estimated year