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上顎両側乳犬歯複根とその発生機序
https://hsuh.repo.nii.ac.jp/records/7848
https://hsuh.repo.nii.ac.jp/records/7848f2fb629d-a769-4e35-bf3d-655e3f50e0e6
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
上顎両側乳犬歯複根とその発生機序 (2.7 MB)
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| Item type | 紀要論文(ELS) / Departmental Bulletin Paper(ELS)(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 1993-06-30 | |||||
| タイトル | ||||||
| タイトル | 上顎両側乳犬歯複根とその発生機序 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | The Bilateral Bifurcated Root of Primary Canines in Upper Dentition and its Developmental Mechanism | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Bifurcated Root | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Primary Canine | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Supernumerary tooth | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Developmental Mechanism | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| ページ属性 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | P(論文) | |||||
| 言語 | ja | |||||
| 記事種別(日) | ||||||
| ja | ||||||
| 原著 | ||||||
| 記事種別(英) | ||||||
| en | ||||||
| ORIGINAL ARTICLES | ||||||
| 著者名(日) |
畑, 良明
× 畑, 良明× 五十嵐, 清治× 松田, 浩一× 高橋, 和人 |
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| 著者所属(日) | ||||||
| ja | ||||||
| 東日本学園大学歯学部 | ||||||
| 著者所属(日) | ||||||
| ja | ||||||
| 神奈川歯科大学口腔解剖学教室 | ||||||
| 著者所属(英) | ||||||
| en | ||||||
| Department of Operative Dentistry and Endodontology, School of Dentistry, HIGASHI-NIPPON-GAKUEN UNIVERSITY | ||||||
| 著者所属(英) | ||||||
| en | ||||||
| Department of Oral Anatomy, KANAGAWA DENTAL COLLEGE | ||||||
| 抄録(英) | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | In primary and permanent dentition, canines locate between incisors and molars, and they are very important for the growth of occlusion and dentition. The number and shape are very stable, and they are interest in investigations of anatomical and histological abnormalities. The authors discovered a very rare case of bilateral primary canines with bifurcated roots and 2 supernumerary mediodenses in an 8 year 3 months old male. Two supernumerary teeth and bilateral primary canines with bifurcated roots were extracted at the exchange stage. These teeth were investigated in detail, anatomically and histologically, macro-and microscopically with a scanning electro-microscope. The developmental mechanism of the bifurcated roots observed in this study shows: 1. The crown form of the primary canines with bifurcated roots was simillar to normal primary canines. The roots of the primary canine bifurcated mesiodistally, were of the same length and each divided directly under the crown. 2. Compared with the measured values between the bifurcated canines and the normal single-root canine, the former were larger only at the mesio-distal diameter of the crown. Other teeth of this case were smaller than normal teeth. 3. In the histological study, the enamel of the primary canine with bifurcated roots and supernumerary mediodens frequently contained more numerous enamel tufts, abnormally shaped parazones of enamel prisms, and malformed or undercalcified enamel prisms. An interradicular crista and its related dentin nucleus or nuclei are found in normal multiple-root teeth, whereas neither the crista nor dentin nucleus were found in the primary canine with bifurcated roots. 4. In the root of the bilateral lower primary canines, there was a deep and large groove on the labial root surface. It was considered the lower primary canine roots showed a tendency to bifurcate. 5. In sucessive observertion with roentgenograms, the lower bilateral first and second premolar floar of the pulp-chamber were starting to calcify, and it is considerd that their roots will bifurcate. 6. Some enviromental factor in the early embryomental period occurred to bifurcate the upper primary canine root, and then to 2 supernumerary mediodenses, and sucessive lower premolar roots were bifurcated. 7. The enviromental factor influence continued from the early stage of formation in primary tooth buds to the stage calcifation of permanent tooth roots. | |||||
| 雑誌書誌ID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN0008135X | |||||
| 書誌情報 |
ja : 東日本歯学雑誌 巻 12, 号 1, p. 1-15, 発行日 1993-06-30 |
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| 出版タイプ | ||||||
| 出版タイプResource | VoR | |||||
