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.
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.39, no.1, pp.9-11, 2018 (Released:2018-02-15)
参考文献数
11

Abstract : The purpose of this study was to investigate the root canal morphology of extracted two-rooted second mandibular molars. Seventy-seven two-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. As for the mesial root, 70.1% were two-root canals, whereas for the distal root 88.3% were single-root canals. Although two-rooted mandibular second molars have a simple root canal configuration, in some cases the root canal system is complex, so careful root canal detection is necessary.