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アブストラクト（24巻1号：神奈川歯学）
Japanese
| Title ： | 歯の挺出に伴なう歯根膜血管網, 歯根膜線維と歯槽骨の変化について |
|---|---|
| Subtitle ： | 原著 |
| Authors ： | 川戸二三江, 高橋和人 |
| Authors（kana） ： | |
| Organization ： | 神奈川歯科大学口腔解剖学教室 |
| Journal ： | 神奈川歯学 |
| Volume ： | 24 |
| Number ： | 1 |
| Page ： | 117-138 |
| Year/Month ： | 1989 / 6 |
| Article ： | 原著 |
| Publisher ： | 神奈川歯科大学学会 |
| Abstract ： | 「緒言」歯根膜は単に歯を歯槽内に支持するだけでなく, 歯根膜中の基質, 組織液および血管内の血液など, すべてが粘弾性機能として作用することによって, 歯根膜は全体として咬合圧に対する緩衝装置的役割を有し, 歯槽骨に対しては保護的役割をも兼ねているであろうと考えられている. Kindlova and Matena(1961), Kindlova(1965)らはラテックスを歯根膜の血管網に注入し, 実体顕微鏡下での観察結果からその血管網は歯に加わった圧力を緩衝する機能を持つと推察した. 蒲(1961)は歯根膜の血管網を立体的に観察する試みとして, メタアクリレートを注入し立体的な構築を光学顕微鏡で観察した. 安藤(1969)は従来から広く用いられている墨汁注入法によって, ヒトの歯根膜の血管網の微細血管分布形態および密度について詳しく検索した. 次いで, 岸, 高橋(1977), 岩淵(1982)らは, 血管に合成樹脂を注入した後, 蛋白分解酵素消化法を用い, 軟組織のみを除去し, 骨付着血管鋳型標本を作製し, 走査型電子顕微鏡(SEM)で観察し, 歯根膜の血管網の特徴を示した歯根膜血管網全体を検索した. |
| Practice ： | 歯科学 |
| Keywords ： | 歯の挺出, 歯根膜の血管網, 歯槽骨, 血管鋳型法, 走査型電顕 |
English
| Title ： | Changes of the Periodontal Vascular Network, Periodontal Fiber and Alveolar Bone incident to Tooth Extrusion |
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| Subtitle ： | Original article |
| Authors ： | Fumie KAWATO, Kazuto Takahashi |
| Authors（kana） ： | |
| Organization ： | Department of Oral Anatomy, Kanagawa Dental College |
| Journal ： | Kanagawa Shigaku |
| Volume ： | 24 |
| Number ： | 1 |
| Page ： | 117-138 |
| Year/Month ： | 1989 / 6 |
| Article ： | Original article |
| Publisher ： | Kanagawa Odontological Society |
| Abstract ： | Abstract : During the application of orthodontic force to a tooth, the surrounding tissues undergo changes of bone resorption and apposition, thereby resulting in tooth movement. The purpose of this study was to investigate the interrelationship between alveolar bone changes and the periodontal vascular network caused by extrusive orthodontic force useing a scanning electron microscopy. Extrusive orthodontic force was applied to the mandibular 2nd and 3rd premolars of adult dogs. At the completion of the loading process, the inferior alveolar arteries were injected with a low viscosity MMA resin (Mercox). The following results were obtained. 1) At 3 days post-extrusion, various types of vascular network showing a loop pattern were seen along the direction of the tooth movement. 2) At 7 days post-extrusion, various types of vascular network with a hairpin loop pattern along the direction of the tooth movement were observed. Histologically, the fibers of periodontal ligament were stretched in the direction of the extrusion, Vascular hairpin loop formations were observed within the fibers of periodontal ligament. Bone apposition was not observed on the surface of alveolar bone. 3) At 14 days post-extrusion, a much more extensive and developed hairpin loop pattern occurred. Ferthermore, new bone apposition was seen on the alveolar bone beneath under the hairpin loops. The periodontal ligament space was retained in the same width, even after bony apposition. 4) At 21 days post-extrusion, the tooth side microvascular network showed abundant low hairpin loops which anastomosed each other, and new spinous bony apposition was obseved right below the periodontal vascular network. 5) At 30 days post-extrusion, the periodontal vascular network showed a almost normal appearance, with the rearrangement of vascular network. The surface of the spinous bony apposition became flat. The appositional bone had a lower degree of calcification than the alveolar bone in control group. 6) At 60 days post-extrusion, the periodontal vascular network completed the rearrangement of vasculature. |
| Practice ： | Dentistry |
| Keywords ： |
