permanent incisor

基本解释

Conclusion The root canal therapy difficulty in Chinese mandibular permanent incisor is significantly with root canal anatomy.
结论下颌恒切牙根管治疗难度与根管解剖密切相关，根管治疗难度较大。
A case is reported in which two ectopic maxillary permanent canine teeth bypassed the lateral incisors and caused extensive resorption to both maxillary central incisor teeth.
案件报告中，两名常任异位上颌犬齿绕过侧门，并造成了广泛的骨吸收两个上颌中切牙牙齿。
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Methods:The models of 3 dimensional finite element analysis (3 D FEA) of left upper permanent central incisor were designed by microtomy. Comparative studies of stress distribution were carried out.
方法：采用切片法建立上颌左侧恒中切牙的三维有限元模型，研究3 种瓷贴面复合体的应力分布。