Chan K, Yew S C, Chao S Y
Dental Department, Taichung Veterans General Hospital, Taiwan, China.
Int Endod J. 1992 Sep;25(5):261-4. doi: 10.1111/j.1365-2591.1992.tb01160.x.
The presence of three root canals in the mandibular premolar may sometimes be recognized when there is persistent postoperative discomfort following root canal therapy. This paper presents two cases of root canal treatment of mandibular premolars with three root canals including one mandibular first premolar and one mandibular second premolar. The possibility that there is more than one root canal in lower premolar teeth must be considered in the radiographic and clinical examination during root canal treatment.
当下颌前磨牙根管治疗后仍存在持续性术后不适时，有时可发现存在三根根管。本文介绍了两例下颌前磨牙三根根管的根管治疗病例，其中一例为下颌第一前磨牙，另一例为下颌第二前磨牙。在根管治疗的影像学和临床检查中，必须考虑下颌前磨牙存在不止一根根管的可能性。
