著者

高橋 祥一郎 後藤 昌昭 岡 増一郎 田代 英雄

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.25, no.5, pp.967-972, 1979-10-15 (Released:2011-07-25)

参考文献数

31

被引用文献数

1 2

著者

竹之下 康治 堀之内 康文 山本 昌家 平野 裕士 岡 増一郎 岡本 学

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.35, no.1, pp.187-191, 1989-01-20 (Released:2011-07-25)

参考文献数

19

被引用文献数

3 3

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Fracture of the mental spine (genial tubercles, spina mandibularis) is comparatively rare entity of mandibular fracture. It can be assertained only by occlusal radiogram. This type of fracture is considered that normal occlusal stress is a main role, in the severely atrophied edentulous mandible and hypertrophied spines in the denture bearing elders.The pathogenesis of this fracture is proposed as one of the stress or spontaneous fractures, like a so-called pathologic fracture. In this sequence, the dental practitioners should keep in mind the possibility of this fracture, especially in denture construction.The authors reported three further cases treated conservatively and discussed the mechanism and treatment of this injury.

著者

中村 誠司 篠原 正徳 原田 猛 廣木 朗子 岡 増一郎

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.41, no.1, pp.62-69, 1995-01-20 (Released:2011-07-25)

参考文献数

25

被引用文献数

2 1

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Sixty dentigerous and 10 primordial cysts were examined clinically and pathologically. Fifty-six of the dentigerous cysts had non-keratinizing epithelium and 9 of the dentigerous cysts had keratinizing epithelium. However, 5 keratinizing dentigerous cysts and 1 non-keratinizing primordial cyst were observed as exceptions.Radiographically, the dentigerous cysts were generally of unilocular round shape with a well-defined border. However, the well-defined border was often lost due to severe infection. In contrast, the primordial cysts were more frequently shown to be of irregular and multilocular shape, and the well-defined border was well preserved even with severe infection. Thus, keratinizing epithelium was suggested to be involved in the formation of irregular and multilocular shape and to be more resistant to infection.Pathologically, non-keratinizing epithelium often showed proliferation, a lacy appearance, and ridge elongation in association with inflammatory cell infiltration. In contrast, such changes in keratinizing epithelium were rarely observed even with heavy inflammation. Interestingly, ameloblastoma-like epithelial proliferation and calcification in the absence of inflammation were partially observed in 6 and 7 cases, respectively, independent of keratinization of epithelium. Thus, odontogenic epithelial cells were suggested to have high proliferative and differentiative activities.

著者

竹之下 康治 納富 一幸 田代 英雄 田中 陽一 中里 一成 岡 増一郎

出版者

特定非営利活動法人 日本口腔科学会

雑誌

日本口腔科学会雑誌 (ISSN:00290297)

巻号頁・発行日

vol.31, no.3, pp.407-418, 1982-07-10 (Released:2011-09-07)

参考文献数

38