アブストラクト（21巻1号：神奈川歯学）

神奈川歯学

Japanese

Title　： 歯の移動時における歯根膜血管網および歯槽骨の変化について
Subtitle　： 原著
Authors　： 松尾雅斗, 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　： 21
Number　： 1
Page　： 21-48
Year/Month　： 1986 / 6
Article　： 原著
Publisher　： 神奈川歯科大学学会
Abstract　： 「緒言」歯根膜は歯と歯槽骨の間に介在し, 歯の支持や咬合圧に対する歯槽骨の保護等の機能を持っている. Kindlova and Matena (1962), Kindolova (1965) らは血管にLatex樹脂を注入し歯根膜に分布する血管網の形態を観察した結果, その血管網は咬合圧の歯槽骨への緩衝作用を有していると考えた. また, メタアクリレートを注入した蒲 (1961) はイヌ歯根膜の立体的構築を光学顕微鏡で観察した. その後岸, 高橋 (1977) が, 蛋白分解酵素消化法を用い, 走査型電子顕微鏡にて観察し, 正常な歯根膜の血管網の立体的基本構造を明らかにし, また, 歯槽骨との関係についてはフォルクマン管を通じて, 多数の交通枝が歯槽骨骨髄の血管と, 歯根膜の血管網を結んでいるとした. 歯の移動時における歯根膜血管網の変化については, Castelli (1965), 中村 (1967), 藍原 (1969), Gianelly (1969) らが色素等を注入して, 血管分布と骨改造現象の関連を観察している.
Practice　： 歯科学
Keywords　： 歯周組織, 毛細血管, SEM

English

Title　： Morphological Changes of the Vascular Network of the Periodontal Membrane and Alveolar Bone Incident to Orthodontic Tooth Movement
Subtitle　：
Authors　： Masato MATSUO, Kazuto Takahashi
Authors（kana）　：
Organization　： Department of Oral Anatomy, Kanagawa Dental College
Journal　： Kanagawa Shigaku
Volume　： 21
Number　： 1
Page　： 21-48
Year/Month　： 1986 / 6
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] : Morphological changes in the vasculature of the periodontal membrane and alveolar bone around teeth following the application of orthodontic forces to dog teeth has been examined using corrosive resin cast under scanning electron microscope. Forty dogs have been used to carry out the study Mandibular 2nd and 3rd premolars were bodily moved. The findings were as follows : 1. Following 1 day of tooth movement, periodontal vascular network disappeared on pressure side, and direct bone resorption was appearent on the surface of alveolar bone. 2. After 7 days, on the tention side, the vascular network in the periodontal membrane was shown changed from a tortoise-shell patten to a longer half-elliptical pattern, the tip of which towards the direction of tension force, finally resulting in the formation of hairpin loop vascular network. While on the pressure side the vascular network was compressed to juxtapose together and become bundled-like pattern. And the direct resorptive process was also prevailing on the alveolar bone surface. Owing to the disappearing of resin, an exposed alveolar bone area could be observed, around which numerrous loop-tip pattern vassels circumscribed, indicating the occurrence of undermining resorption. In addition, the root surface facing the exposed alveolar bone area was shown under resorptive process. 3. After 14 days, undermining resorption was observed continuing from both margin and the bottom of the exposed alveolar area, resulting in many moth-eaten appearance. And at this stage, new vascular network formed on an anvascularized alveolar bone which was surrounded by non-loop vascular network. 4. After 30 days, following the disappearing of the exposed alveolar bone area, the tooth moved again and the vascular network in periodontal membrane also rearranged to form hairpin loop pattern vascular network, tips of which towards the direction of tention force. In addition, the deposition of new bone trabecula on the alveolar bone surface was identified. 5. After 60 days, the vessels in the periodontal membrane, following anastomosing with the vessels from alveolar bone marrow, finished the vascular rearrangement.
Practice　： Dentistry
Keywords　： SEM