Damping capacity of the hollow super-elastic wire and mechanotransduction in bone metabolism activity

空心超弹丝的阻尼能力与骨代谢活动中的力传导

• 批准号: 14571940
• 负责人: YONEYAMA Takayuki
• 金额: $ 2.5万
• 依托单位: Tokyo Medical and Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14571940/
• 关键词: super-elastic Ti-Ni alloy wire; damping capacity; shock absorbing; periodontal tissues; bone metabolism activity; hollow wire; 矯正用超弾性型Ti-Ni合金ワイヤー; 中空型ワイヤー

During orthodontic treatment, excessive occiusal force may be contributed.to one or more teeth, moreover.unstable occiusal conditions are commonly induced. Hollow super-elastic Ti-Ni alloy wire possesses lighter continuous force and low load hysteresis, which it also has possibility to possess superior damping capacity. The purpose of this investigation has been to clarify the influence of the vibrating stimuli that are subsequently transmitted through various orthodontic arch wires upon periodontal tissues.In experimental rat model; we examined influences upon periodontal tissues after transmitted a vibrating stimulus through orthodontic wire. We observed degeneration, inflammation, extravasations of red blood corpuscles from the blood vessels in the apical dental pulp, and other signs of damage in specimens of stimulated teeth. In sharp contrast, we observed far less damage on the periodontal tissues of teeth to which super-elastic Ti-Ni alloy wire had been attached. Furthermore periodontal tissues change was not observed in the teeth which ISW (Improved super-elastic Ti-Ni alloy wire) had been attached, So, we hypothesized that these superior damping capacity possessed in super-elastic Ti-Ni alloy wires is responsible for reducing damage during orthodontic treatment. Moreover, by using the hollow super-elastic Ti-Ni alloy wire in orthodontic treatment, its superior damping capacity will absorb excess shock transmission and induce remodeling of periodontal tissues during tooth movement (62th Annual Meeting of the Japanese Orthodontic Society, Niigata)..

在矫正治疗过程中，过度的咬合力可能会影响一颗或多颗牙齿，而且，通常会导致不稳定的咬合状态。contributed.to超弹性钛镍合金空心丝具有较轻的连续力和较低的载荷滞后，有可能具有上级阻尼性能。本研究旨在探讨振动刺激通过不同的正畸弓丝传递对牙周组织的影响，在实验大鼠模型上，我们研究了振动刺激通过正畸弓丝传递后对牙周组织的影响。我们观察到变性，炎症，红细胞从血管中的根尖牙髓外渗，和其他迹象的刺激牙齿标本的损害。与此形成鲜明对比的是，我们观察到的超弹性钛镍合金丝已被连接到牙齿牙周组织的损害要小得多。另外，在正畸治疗过程中，应用改良超弹性钛镍合金丝（Improved super-elastic Ti-Ni alloy wire，ISW）的牙齿没有观察到牙周组织的变化，因此，我们推测超弹性钛镍合金丝所具有的这种上级阻尼能力是减少正畸治疗过程中损伤的原因。此外，通过在正畸治疗中使用中空超弹性Ti-Ni合金丝，其上级阻尼能力将吸收牙齿移动过程中多余的冲击传递并诱导牙周组织的重塑（第62届日本正畸学会年会，新泻）。

项目成果

Tetsuro Kameyama: "Inactive periods of constant orthodontic forces related to desirable tooth movement in rats"J.Orthod.. 30(1). 31-37 (2003)

Tetsuro Kameyama：“与大鼠理想牙齿移动相关的恒定正畸力的非活动期”J.Orthod.. 30(1)。

Hirotaka Miura: "Damping capacity of orthodontic wires decreases the transmission of undesirable force: an experimental study in rat"Orthod.Waves. 61(2). 441-446 (2002)

Hirotaka Miura：“正畸钢丝的阻尼能力减少了不良力的传递：大鼠实验研究”Orthod.Waves。

Siripen Sringkarnboriboon: "Root Resorption Related to Hypofunctional Periodontium in Experimental Tooth Movement"J. Dental Research. (in press). (2003)

Siripen Sringkarnboriboon：“实验性牙齿移动中与功能低下的牙周组织相关的牙根吸收”J。

Hirotaka Miura: "Comparative examination of damping capacities with laser displacement apparatus in orthodontic wires-Super-elastic Ti-Ni alloy and conventional stainless steel wires-"Orthodontic Waves. 61(6). 435-440 (2002)

Hirotaka Miura：“正畸钢丝激光位移装置阻尼能力的比较检查-超弹性钛镍合金和传统不锈钢钢丝-”正畸波。

Hideo Matsumura: "Adhesive bonding of super-elastic titanium-nickel alloy castings with a phosphate metal conditioner and an acrylic adhesive"J.Oral.Rehabil.. 30(6). 653-658 (2003)

Hideo Matsumura：“使用磷酸盐金属调理剂和丙烯酸粘合剂粘合超弹性钛镍合金铸件”J.Oral.Rehabil.. 30(6)。