上颌第二磨牙单根双腭管并四根管融合1例  

One root with two palatal canals and four canals fused into one in the maxillary second molars:Case report

作　　者：高现灵 龚启梅[1] 林正梅[1] Gao Xianing;Gong Qimei;Lin Zhengmei(Hospital of Stomatology,Guanghua School of Stomatology,Sun Yat-sen University,Guangdong Provincial Key Laboratory of Stomatology,Guangdong Provincial Clinical Research Center of Oral Diseases,Guangzhou 510055,China)

机构地区：[1]中山大学附属口腔医院,光华口腔医学院,广东省口腔医学重点实验室,广东省口腔疾病临床医学研究中心,广州510055

出　　处：《中华口腔医学研究杂志（电子版）》2024年第1期43-47,共5页Chinese Journal of Stomatological Research(Electronic Edition)

基　　金：国家自然科学基金(青年科学基金,82001096)。

摘　　要：上颌第二磨牙(MSM)牙根及根管系统的数目、形态均变异较大,牙根融合和颊侧第二根管是常见的变异。本文报告1例罕见的MSM解剖变异,经锥形束计算机体层扫描证实为单牙根,双腭管,且4个根管在根尖区融合为1个根管。The roots and roots canal system vary greatly in the maxillary second molars(MSMs),where root fusion and the second mesiobuccal canal(MB2)are common variations.This case reported a rare anatomical variation of MSMs,confirmed by cone beam computed tomography(CBCT),which was one single conical root,2 palatal canals and 4 canals fused into one at the apical region.

关 键 词：上颌第二磨牙 融合根 双腭根管 锥束计算机体层摄影术 

分 类 号：R781.05[医药卫生—口腔医学]