著者

松木 良介 竹之下 康治 大山 順子 清木 祐介 佐々木 匡理 堀之内 康文 白砂 兼光

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.51, no.12, pp.590-595, 2005-12-20 (Released:2011-04-22)

参考文献数

10

被引用文献数

2 2

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Removal of mandibular third molars is one of the most common operations in oral surgery. Hypoesthesia of the lower lip occurring after the extraction of third molars is a serious complication, requiring a prolonged time for recovery. In this study, we investigated factors potentially affecting the incidence of hypoesthesia.A total of 781 mandibular third molars extracted at our clinic in 2002 were examined. There were 17 cases (2.2%) of hypoesthesia of the lower lip. There was no relation of gender, difficulty of extraction, or the skill of the operator to the incidence of hypoesthesia. In contrast, the incidence of hypoesthesia strongly correlated with age and the root position of mandibular third molars with respect to the mandibular canal.Eleven of the 17 cases of hypoesthesia (64.7%) resolved within 1 month, and 16 of the 17 cases (94.1%) resolved within 6 months. The patients who had hypoesthesia for more than 1 monthwere significantly older than those who recovered from hypoesthesia within 1 month and were all female.These results might be useful when informing patients about potential complications of tooth extraction.

著者

有岡 将基 佐々木 匡理 石井 広太郎 金本 政樹 山城 崇裕 森 悦秀

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.63, no.1, pp.15-20, 2017-01-20 (Released:2017-03-21)

参考文献数

21

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Arsenic trioxide used to be used as an effective endodontic treatment. However, domestic production of arsenic trioxide for mortal pulpectomy was discontinued in 2005, because it is a toxic agent that has the risk of injuring periodontal tissues. We report a case of mandibular osteonecrosis caused by leakage of arsenic trioxide in a child after 2005. The patient was a 6-year-old boy who presented with swelling of the right buccal region, after arsenic trioxide had been used for mortal pulpectomy in the mandibular right second primary molar. The condition was diagnosed as mandibular osteonecrosis. The mandibular right first primary molar and mandibular right second permanent premolar were extracted, and a sequestrectomy was performed with the patient under local anesthesia. We still should consider that leakage of pulp devitalizing agents can cause osteonecrosis.