著者

内田 雄士 柴 秀樹 河口 浩之 栗原 英見

出版者

一般社団法人 日本歯内療法学会

雑誌

日本歯内療法学会雑誌 (ISSN:13478672)

巻号頁・発行日

vol.32, no.3, pp.226-231, 2011 (Released:2017-10-31)

参考文献数

15

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Abstract : Cone-beam computed tomography (CBCT) and dental microscope are useful for diagnosis and treatment in endodontic therapy. CBCT is designed to produce three-dimensional information about undistorted tooth root canals and the shape of periapical lesions. A dental microscope is effective for identifying the subvisible narrow root canal orifice, location of root perforation and fractured instrument in the root canal. This report describes the treatment by CBCT and microscope of an endodontic lesion caused by perforation. The patient was a 49-year-old woman. X-ray photographs of the mandibular right first molar showed a periapical lesion and a perforation near the intracanal post on the middle of the distal surface of the distal root. The closed orifice of the distal root canal was searched for on CBCT images, and located under a dental microscope. The root canals and perforation area were filled by gutta-percha after checking sterilization with a bacterial examination. The prognosis was good 18 months after the root canal filling. This case suggests that an exact diagnosis with CBCT and fine treatment under a dental microscope improve the success rate of complex cases of infected root canal and infected root perforation.