Bio-mechanical acceleration of orthodontic tooth movement with the physical energy of ultrasonic and laser beam

利用超声波和激光束的物理能量加速正畸牙齿移动的生物力学

• 批准号: 03670981
• 负责人: KANEGAE Haruhide
• 金额: $ 1.28万
• 依托单位: SHOWA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03670981/
• 关键词: orthodontic tooth movement; bone remodeling; semiconductor laser; attenuance of laser; ultrasonic vibration; periodontal tissue; 半導体レ-ザ-; 歯の振動

PURPOSETo investigate the possibility of bio-mecanical acceleration of orthodontic tooth movement with physical energy of ultrasonic and laser beam, we made several research on the following subjects.1) basic study on the penetrative sensitibity of Ga-Al-As semiconductor laser (MORITA INDUSTRY, 790nm, 60mW, continuous wave) in living tissue2) evaluation of the magnitude of living tooth vibration being in contact with ultrasonic chip (28kHz, amplitude : 10mum)3) histological survey on peridontal tissue of Wister rat's molar being orthodontically moved by Waldo's method combined with the physical acceleration of ultrasonic vibration and/or laser beamMETHODS AND RESULTS1) The amount and the distribution of the semiconductor laser beam on the penetrative sede were quantified. Tissues used in this study consists of mandibular cortical bone derived from human and ox, masseter muscle, fat tissue of ox and human venous blood which were all collected in fresh status on the same day of measureme … More nt.Percent transmittance of cortical bone in 1.0mm thickness reached 50% and the distribution of the beam power on the penetrativee side showed remarkable scattering and some absorption and scattering were observed. Blood indecated lower level of the transmittence ; the beam power seemed to be attenuated by absorption rather than scattering through blood.2) Several upper molars of Wister rats among which orthodontic elastics had been inserted between M1 and M2 one week before measurement were used in this study. The upper jaw was fixed tightly on measuring equipment under wet condition immediately after the sacrifice.Compared with the control sides (without elastics) the experimental sides showed remarkably higher frequency (3-11kHz) and larger amplitude (12-24mum).3) 120-second laser beam were irradiated four times and 30-second ultrasonic vibration were given three times during 2-week experimental period.According to the histological observation, laser irradiation accelerated the bone remodeling and tissue repaire of periodotium after tooth movement. On the othe hand, ultrasonic vibration enhanced bone resorption and delayd bone formation. Laser irradiation with ultrasonic seemed to decrease this phenomena. Less

目的探讨超声和激光束物理能量对正畸牙齿运动进行生物力学加速的可能性，进行了以下几方面的研究。1) Ga-Al-As半导体激光器（森田工业，790nm, 60mW，连续波）在活体组织中穿透灵敏度的基础研究2)活齿接触超声芯片时振动幅度的评估(28kHz，振幅：10)3) Waldo法联合超声振动和（或）激光束物理加速移动Wister大鼠磨牙时牙周组织的组织学调查方法与结果1)定量测量半导体激光束在穿透侧的量和分布。本研究使用的组织包括人、牛的下颌骨皮质骨、咬肌、牛脂肪组织和人静脉血，均在测量当日新鲜采集。1.0mm厚度的皮质骨透光率达到50%，穿透侧的光束功率分布有明显的散射，有一定的吸收和散射。血液透光度较低；光束功率似乎被吸收而不是通过血液散射而减弱。2)本研究采用Wister大鼠上颌磨牙，其中在测量前一周在M1和M2之间插入正畸弹性。牺牲后立即将上颚紧固定在湿态测量设备上。与没有弹性的控制侧相比，实验侧显示出明显更高的频率（3-11kHz）和更大的振幅（12-24mum）。3)在2周的实验期内，120秒激光束照射4次，30秒超声振动3次。组织学观察表明，激光照射加速了牙移动后牙周膜的骨重塑和组织修复。另一方面，超声振动增强骨吸收，延缓骨形成。超声激光照射似乎可以减少这种现象。少

项目成果

山岸久也,他: "半導体レーザーの組織透過性に関する基礎的研究(抄)" 日本レーザー歯学会誌. 3. 121-123 (1992)

Hisaya Yamagishi 等人：“半导体激光组织穿透的基础研究（摘要）”日本激光牙科学会杂志，3. 121-123（1992 年）。

山岸 久也 他: "半導体レーザーの組織透過性に関する基礎的研究" 日本レーザー歯学会雑誌. 3. 121-123 (1992)

Hisaya Yamagishi 等人：“半导体激光器组织穿透的基础研究”日本激光牙科学会杂志 3. 121-123 (1992)。

山岸久也,他: "半導体レーザーの組織透過性に関する基礎的研究" 日本レーザー歯学会誌. (投稿中). (1994)

Hisaya Yamagishi 等人：“半导体激光器组织穿透的基础研究”，日本激光牙科学会杂志（目前正在提交）（1994 年）。

Yamagishi H., Shinohara C., Saito S., Sasaki H., Kanegae H., Shibasaki Y., Fukuhara T.: "A basic study on the penetrative sensitivity of Ga-Al-As semiconductor laser in living tissues" J.of Japan. Sc. for Laser Dent.5 (in print). (1994)

Yamagishi H.、Shinohara C.、Saito S.、Sasaki H.、Kanegae H.、Shibasaki Y.、Fukuhara T.：“Ga-Al-As 半导体激光在活体组织中的穿透灵敏度的基础研究” J.

出岸 久也 他: "半導体レ-ザ-の組織透過性に関する基礎的研究" 日本レ-ザ-歯学会雑誌. 1. (1992)

Hisaya Degishi 等：“半导体激光组织穿透的基础研究”日本激光牙科学会杂志 1。（1992 年）