常見例句雙語例句Conclusion The root canal therapy difficulty in Chinese mandibular permanent incisor is significantly with root canal anatomy.結(jié)論下頜恒切牙根管治療難度與根管解剖密切相關(guān)，根管治療難度較大。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.案件報告中，兩名常任異位上頜犬齒繞過側(cè)門，并造成了廣泛的骨吸收兩個上頜中切牙牙齒。syyxw.comMethods: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：采用切片法建立上頜左側(cè)恒中切牙的三維有限元模型，研究3 種瓷貼面復合體的應力分布。 返回 permanent incisor