Quantitative determination of the stability of the implant-tissue interface using resonance frequency analysis
Quantitative determination of the stability of the implant-tissue interface using resonance frequency analysis
复制标题
DOI：
10.1034/j.1600-0501.1996.070308.x
复制
发表时间：
1996-09-01
影响因子：
4.3
通讯作者：
Cawley, P
中科院分区：
文献类型：
--
作者：
Meredith, N;Alleyne, D;Cawley, P
骨锚定植入物现在被用于牙科支持口内和颅面假体。虽然有报道称成功率很高，但少数种植体可能在早期愈合阶段或后期功能失效。目前临床上确定种植体稳定性和骨整合的方法相对粗糙，可能需要用钝性器械固定固定。射线照片是有价值的，但标准化的技术是必要的，以确保可重复性。本研究旨在研究应用共振频率分析的非侵入性测试方法对植入物组织界面的体外和体内稳定性进行定量测量。当连接到嵌入在铝块中不同高度的植入物时，测量小型换能器的共振频率。观察到的频率与暴露的种植体固定装置高度之间存在强相关性（r = 0.94，p <0.01）。通过将植入物嵌入自固化聚甲基丙烯酸甲酯中并在聚合期间测量共振频率，对愈合期间植入物周围骨中观察到的刚度变化进行建模。观察到与刚度增加相关的共振频率的显著增加。共振频率的测量也在体内植入物和相关的结果以及在体外的调查结果。
Bone anchored implants are now being used in dentistry for supporting intraoral and craniofacial prostheses. Although high success rates have been reported, a small number of implants may fail during the early healing phase or later in function. Currently available clinical methods to determine implant stability and osseointegration are relatively crude and may entail percussing a fixture with a blunt instrument. Radiographs are of value, but a standardised technique is necessary to ensure repeatability. This investigation was designed to study the application of a non-invasive test method using resonance frequency analysis to make quantitative measurements of the stability of the implant tissue interface in-vitro and in-vivo. The resonance frequency of a small transducer was measured when attached to implants embedded at different heights in an aluminium block. A strong correlation (r = 0.94, p < 0.01) was observed between the observed frequency and the height of implant fixture exposed. The change in stiffness observed in the bone surrounding an implant during healing was modelled by embedding implants in self-curing polymethylmethacrylate and measuring the resonance frequency at periods during polymerisation. A significant increase in resonance frequency was observed related to the increase in stiffness. Resonance frequency measurements were also made on implants in-vivo and the results correlated well with the in-vitro findings.