ROOT FORM AND CANAL ANATOMY OF MANDIBULAR 2ND MOLARS IN A SOUTHERN CHINESE POPULATION
ROOT FORM AND CANAL ANATOMY OF MANDIBULAR 2ND MOLARS IN A SOUTHERN CHINESE POPULATION
复制标题
DOI：
10.1016/s0099-2399(88)80192-4
复制
发表时间：
1988-07-01
影响因子：
4.2
通讯作者：
WALKER, RT
中科院分区：
文献类型：
--
作者：
WALKER, RT
牙冠形态的种族差异早已被人们所认识，但牙根形态和牙根管解剖结构由基因决定的变异频率尚未确定。蒙古人种中出现频率特别高的根和根管形态特征尚未得到系统记录。这些特征可能对临床牙髓学产生的影响尚未得到充分报道。 在这项研究中，对从中国香港患者身上拔出的 100 颗下颌第二磨牙进行了目视和放射学检查。对于每颗牙齿，记录根、根管和根尖孔的数量。 52% 的下颌第二磨牙被发现具有完全的牙根融合，55% 的牙齿被发现只有两个牙根管。在这个中国牙齿样本中，牙根融合的高发生率强调了种族差异可能对成人牙列的牙髓形态产生直接影响的方式。
Racial differences in dental crown morphology have long been recognized, but the frequency of genetically determined variations in root form and canal anatomy has not been established. Features of root and root canal morphology occurring at particularly high frequency in Mongoloid populations have not been systematically documented. The implications that such features may have upon clinical endodontics have not been fully reported.In this study 100 mandibular second molars extracted from Hong Kong Chinese patients were examined visually and radiographically. For each tooth, the number of roots, root canals, and apical foramina were noted. Fifty-two percent of the mandibular second molars examined were found to have complete root fusion and 55% of the teeth were found to have only two canals. The high prevalence of fusion of roots in this sample of Chinese teeth emphasizes the way in which racial divergence may have a direct influence upon the endodontic morphology of the teeth of the adult dentition.