Pai A E Vivekananda, Gautam S, Kundabala M
Department of Conservative Dentistry M.C.O.D.S, Manipal University, Attavar, Mangalore, India.
Kathmandu Univ Med J (KUMJ). 2009 Jul-Sep;7(27):298-300. doi: 10.3126/kumj.v7i3.2741.
Mandibular premolars usually have a single root and canal. Complex root canal system with atypical variations is a common finding among them. Failure to identify such a one can affect the prognosis of endodontic treatment. Apart from knowledge and sophisticated instruments, a good clinical expertise is required in identifying, tracing and treating such a root canal system. This case report is on the retreatment of a left mandibular second premolar (44) having a Vertucci's Type III canal configuration. Inability to identify this canal configuration led to a missed canal, faulty obturation and post treatment apical periodontitis.
下颌前磨牙通常有一个牙根和根管。根管系统复杂且存在非典型变异在其中很常见。未能识别这样的根管会影响牙髓治疗的预后。除了知识和精密器械外，识别、追踪和治疗这种根管系统还需要良好的临床专业技能。本病例报告是关于一颗具有韦尔图奇III型根管形态的左下颌第二前磨牙（44）的再治疗。未能识别这种根管形态导致根管遗漏、充填失误以及治疗后根尖周炎。
