Gharechahi Maryam, Dastmalchi Parisa
Department of Endodontics, Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences.
Bull Tokyo Dent Coll. 2016;57(3):183-7. doi: 10.2209/tdcpublication.2015-0038.
Here, we report the diagnosis and treatment of an extraoral cutaneous sinus tract originating in a mandibular second molar with a C-shaped root canal system. The patient was referred to our department by a dermatologist after a series of unsuccessful treatments, including antibiotics. Diffuse radiolucency on a preoperative radiograph revealed that earlier root canal treatment had been only partially successful. Consequently, we performed retreatment of the root canal comprising removal of the former restoration and gutta-percha, cleaning and shaping, and passive irrigation with sodium hypochlorite. The patient responded well, and the cutaneous lesion completely resolved uneventfully within 1 month postoperatively. Preoperative recognition and thorough knowledge of the root canal anatomy and conventional methods of obturation are necessary in performing successful endodontic treatment.
在此，我们报告一例起源于下颌第二磨牙C形根管系统的口外皮肤窦道的诊断与治疗。在包括抗生素治疗在内的一系列治疗均未成功后，患者由皮肤科医生转诊至我科。术前X线片上的弥漫性透射影显示早期根管治疗仅部分成功。因此，我们对根管进行了再治疗，包括去除先前的修复体和牙胶，清理、预备根管，并用次氯酸钠进行被动冲洗。患者反应良好，术后1个月内皮肤病变完全顺利消退。术前识别以及对根管解剖结构和传统充填方法的全面了解对于成功进行牙髓治疗是必要的。
