The Three-Dimentional Study of the vascular network of the periodontal ligament ot orthonontic tooth movement.

正畸牙齿移动牙周膜血管网络的三维研究。

• 批准号: 61570869
• 负责人: KAZUTO Takahashi
• 金额: $ 1.41万
• 依托单位: Kanagawa Dental College
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61570869/
• 关键词: Orthodontic teeth movement; Vasvular network of pariodontal ligament; Resorotion and new bone trabecular Resin cast; SEM; Osteoclast; Hair-pin loops; 毛細血管ループ; 血管再構築; 歯の移動; 歯根膜血管網の変化; 歯槽骨の吸収; 骨付き血管鋳型標本; 蛋白分解酵素消化法; 走査型電顕; 無血管部; 歯槽骨露出部

Morphological changes in the vasculature of the periodontal ligament and alveolar bone around teeth following the application of orthodontic forces to dog teeth has been examined using corrosive resin cast under secnning electron microscope. Forty dogs have been used to carry out the study mandibular 2nd and 3rd premplars were bodily moved. The findings were as follows: 1. Following I day of tooth mevement, preiodontal vascular metwork disappeared on pressure side, and direct hone resorption was appearent on the surface of alveplar bone. 2. After 7 days, on the tention side, the vasuclar network in the periodontal ligament 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 fromation of hairpin loop vascular network. While on the presuure side the vascular network was compressed to juxtapose together and become bundled-like pattern. And the direct resorptive process was als … More o prevaling on the alveolar bone surface. Oewing to the disppearing of resin. an exposed alveolar bone area could be observel. around wiich numerous loop-tip pattern vassels circumsctibed. indicating the occurrence of unermining resorption. In addition. the root surface facing the exposed albeolar bone area was shown under resorptive process. 3. After 14 days. undermining resorption was observed continuing from both margin and the botton of the exposed albeolar area. resulting in many both-eaten apperance. And at this stage. new vascular network formed on an vascularized albeolar bone which was surrounded by nonloop yarsuclar network. 4. After 30 days. following the disappering of the exposed albeolar bone area, the tooth moved again and the vascular network in perfiodonta ligament also rearranged to form hairpin loop pattern vascular network. tips of which towards the direction of tention force. In addition. the deposition ot new bone trabecula on the alveolat bone surface was identified. 5. After 60 days. the vessels in the periodontal membrane. following anastowosing with the vessels from alveolar bone marrow, finished the vascular rearrangement. Less

在将正畸力施用到狗齿上后，使用腐蚀性树脂在secnning Electron显微镜下施用了牙周韧带和牙齿周围牙齿周围牙齿骨的形态变化。四十只狗已被用来进行研究下颌第二，而第三个先前移动了三个狗。发现如下：1。在牙齿言语之日之后，牙齿前血管征服在压力侧消失了，直接诚实的分解出现在肺泡骨的表面上。 2。在7天后，在调节侧，显示了牙周韧带中的血管群网络从乌龟壳变为较长的半胸花模式。朝向紧张力方向的尖端。最终导致发夹循环血管网络的发出。在预设方面，血管网络被压缩为并置并成为捆绑的图案。直接的吸收过程是ALS…更多的O O肺泡骨表面。使树脂的厌恶感。可以观察到暴露的牙槽骨面积。周围有许多循环尖端图案盒被限制。表明发生恢复的发生。此外。在吸收过程中显示了面向裸露的天藻骨面积的根表面。 3。14天后。观察到破坏了恢复的恢复，从边缘和暴露的无向区域的botton继续进行。导致许多食物的外观。在这个阶段。新的血管网络在被非环Yarsuclar网络包围的血管化藻类骨上形成。 4。30天后。在裸露的天藻骨面积消失之后，牙齿再次移动，而Perfiodonta韧带中的血管网络也重新排列以形成发夹环图案图案血管网络。朝向调节力的方向的提示。添加。鉴定出肺泡骨表面上的新骨小梁的沉积。 5。60天后。牙周膜中的血管。用牙槽骨骨髓的血管吻合后，完成了血管重排。较少的

项目成果

高橋和人: 歯界展望. 70. 1335-1351 (1987)

Kazuto Takahashi：牙科世界的观点 70。1335-1351 (1987)。

松尾雅斗: 日矯歯誌. 46. 217-229 (1987)

松尾正人：正畸学杂志 46. 217-229 (1987)

高橋和人: "第一大臼歯" 医歯薬出版株式会社, 212 (1986)

高桥和人：《第一颗磨牙》石药出版有限公司，212（1986）

高橋和人: 歯界展望. 70. 597-608 (1987)

Kazuto Takahashi：牙科世界的观点 70. 597-608 (1987)

松尾雅斗: 神奈川歯学. 21. 267 (1986)

松尾正人：神奈川牙科。 21. 267 (1986)