2 0 0 0 OA 単根性下顎第二大臼歯の根管形態
- 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.
2 0 0 0 OA 複根性下顎第二大臼歯の根管形態
- 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.
1 0 0 0 OA 根管治療中の器具誤飲症例からの考察
- 著者
- 角竹 功次 吉岡 隆知 北島 佳代子 五十嵐 勝
- 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.36, no.3, pp.126-129, 2015 (Released:2017-09-30)
- 参考文献数
- 20
Abstract : We experienced a case of accidental ingestion of a root canal instrument. At first, surgical extraction was suggested by a medical doctor, however, the therapeutic strategy was changed upon presentation of a previously published paper. After ingesting fibrous foods, the patient excreted the instrument naturally on the seventh day. The maintenance of guidelines on accidental ingestion would enable treatment policies to be shared with other medical departments.