著者

吉岡 隆知 猪原 光

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.38, no.3, pp.165-170, 2017 (Released:2017-10-06)

参考文献数

27

---

Abstract : The purpose of this study was to investigate the root canal morphology of extracted second mandibular molars determined as single root. Sixty-nine single rooted mandibular second molars were used. Gutta-percha point was inserted into the root canal after root canal preparation by a standardized method. Transparent specimens were made from the test teeth and the root canal morphology was evaluated on images taken with a digital microscope. A C-shaped canal was found in 28.9%. When the root canal was prepared in accordance with the root canal orifice observed in the pulp chamber floor, a missed canal was found in 42% of the teeth. Missed canals could not be discovered due to branching inside the root.