Liu Dan, Qiu Lihong, Yu Jingtao
Department of Endodontics, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, P.R. China.
Iran Endod J. 2019 Summer;14(3):225-231. doi: 10.22037/iej.v14i3.23900.
Having a thorough knowledge of root canal configuration is essential for a successful endodontic treatment. Clinicians should always pay attention to the unusual canal configuration so as to avoid missing extra canals. This paper describes a non-surgical retreatment of a maxillary second molar with two missing root canals; diagnosed by cone-beam computed tomographic (CBCT) imaging. The tooth had three roots and five canals: a C-shaped buccal root fused by mesiobuccal (MB) and distobuccal (DB) roots with three canals (CBCT scanning showed that the second MB canal was closer to the palatal than the buccal side), a mesiopalatal root with one canal, and a distopalatal root with one canal. The purpose of this case report is to remind clinicians of the importance of anatomical variations, and thus, detection of extra canals.
全面了解根管形态对于成功的牙髓治疗至关重要。临床医生应始终关注异常的根管形态，以避免遗漏额外的根管。本文描述了一例上颌第二磨牙的非手术再治疗病例，该病例中有两条根管缺失，通过锥形束计算机断层扫描（CBCT）成像诊断。该牙齿有三个牙根和五条根管：一个C形颊根由近中颊根（MB）和远中颊根（DB）融合而成，有三条根管（CBCT扫描显示，第二条MB根管比颊侧更靠近腭侧），一个近中腭根有一条根管，一个远中腭根有一条根管。本病例报告的目的是提醒临床医生注意解剖变异的重要性，从而检测出额外的根管。
