Department of Prosthesis Technology and Dental Materials, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania;
Rom J Morphol Embryol. 2023 Jul-Sep;64(3):437-442. doi: 10.47162/RJME.64.3.16.
Especially in molars that may have sometimes aberrant additional root canals, the complexity of tooth internal morphology in individual cases sometimes does not match to admitted classification rules and underlines the risk of missed anatomy during the endodontic management. To our knowledge, a permanent mandibular second molar with independent five roots, three mesial and two distal, each of them harboring a single canal, was not yet reported. Despite the treatment difficulties this tooth could be successfully approached by using dental operative microscope and cone-beam computed tomography (CBCT) with small field of view. Though CBCT is not a routine imagistic examination, in case of atypical tooth anatomy aiming to establish adequate diagnosis and treatment plan, the successful clinical outcome prevails over the irradiation dose.
特别是在某些情况下可能存在异常额外根管的磨牙中，个别情况下牙齿内部形态的复杂性有时与公认的分类规则不匹配，并突出了在牙髓治疗管理过程中遗漏解剖结构的风险。据我们所知，尚未报道过具有独立五根管的恒下颌第二磨牙，其中三个近中根和两个远中根，每个根管均有一个单独的根管。尽管治疗存在困难，但通过使用牙科手术显微镜和小视野锥形束计算机断层扫描（CBCT），可以成功地处理这颗牙齿。尽管 CBCT 不是常规影像学检查，但在针对典型牙体解剖结构以建立适当诊断和治疗计划的情况下，成功的临床结果优于辐射剂量。
