1 0 0 0 OA 小児に増加している脚気等ビタミン欠乏の実態と質量分析による病勢診断の確立
- 著者
- 新井 恭子 赤松 俊嗣 長谷川 有紀 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.30, no.1, pp.30-35, 2009 (Released:2017-11-30)
- 参考文献数
- 30
Abstract : This case report describes the root development following apexification of an immature tooth. The patient was a 9-year-old girl. The upper right central incisor suffered apical periodontitis with gingival abscess after rapid orthodontic treatment with a removable appliance. The root canal was cleaned by both biomechanical preparation and biochemical preparation with 6% sodium hypochlorite and 3% hydrogen peroxide. After disinfection of the root canal, calcium hydroxide paste was applied. The medicaments were replaced several times during the follow-up term. After five years and six months, radiographic images showed disappearance of the apical lesion and continuous root development. The shape of the root-end was an irregular, sharp-pointed outline with narrow canal. Following confirmation of the calcified apical barrier at the root end by palpation with a K-file, the lateral condensation procedure with a custom cone and canal sealer was done. This report suggests that root development after apexification occurs because of the existence of apical vital tissue even if the tooth is a non-vital tooth with open apex.