Haas R, Bernhart T, Dörtbudak O, Mailath G
Department of Oral Surgery, School of Dentistry of the University of Vienna, Austria.
J Oral Rehabil. 1999 Jan;26(1):19-24. doi: 10.1046/j.1365-2842.1999.00351.x.
Measurements of the damping behaviour of dental implants with the Periotest device are considered to be an objective means to assess the mobility of implants. The effects of the position of an implant in the maxilla or mandible, the period of time passing between the measurements and implant placement and the height at which the Periotest measurements are performed on the damping behaviour of implants have been discussed controversially. This experimental study examined the influence of the use of different measuring devices, the measuring height and the embedding depth on the damping behaviour of IMZ implants. The implants were embedded in resin at different depths and damping measurements were carried out at different measuring heights. It was found that the values rose with an increasing measuring height and a decreasing embedding depth. Analysis of variance was used to assess the influence of the embedding depth and revealed that the embedding depth had a significant impact on the measuring values at each measuring height, above 6 mm. Moreover, it was found that the higher the measuring height, the higher the measured values and the greater the differences between the values obtained at the individual depths. The different measuring devices had no influence on the measuring results (P = 0.79). The results of this study suggest that a longitudinal follow-up of the peri-implant residual bone height around individual implants is possible. Single measuring values by themselves do not allow any conclusions about the prognosis of an implant. The assessment of the peri-implant bone height through Periotest measurements is conceivable only when a table of damping values taking into account the physical length of the implant, the embedding depth and the measuring height for the examined implant system is available. In cylindrical implants, the head of the available prefabricated measuring post can be recommended as a constant measuring point for further studies, especially when the results are to be compared with those obtained by other study groups.
使用Periotest装置测量牙科植入物的阻尼行为被认为是评估植入物移动性的一种客观方法。关于植入物在上颌骨或下颌骨中的位置、测量与植入之间经过的时间以及进行Periotest测量的高度对植入物阻尼行为的影响，一直存在争议。本实验研究考察了使用不同测量装置、测量高度和植入深度对IMZ植入物阻尼行为的影响。将植入物以不同深度嵌入树脂中，并在不同测量高度进行阻尼测量。结果发现，测量值随着测量高度的增加和植入深度的减小而升高。采用方差分析评估植入深度的影响，结果显示，在6mm以上的每个测量高度，植入深度对测量值均有显著影响。此外，还发现测量高度越高，测量值越高，且在各个深度获得的值之间的差异越大。不同的测量装置对测量结果没有影响（P = 0.79）。本研究结果表明，对单个植入物周围的种植体周围剩余骨高度进行纵向随访是可行的。仅凭单个测量值无法对植入物的预后得出任何结论。只有当有一个考虑了所检查植入系统的植入物物理长度、植入深度和测量高度的阻尼值表时，才可以通过Periotest测量来评估种植体周围骨高度。在圆柱形植入物中，对于进一步的研究，可以推荐使用现有的预制测量柱的头部作为恒定的测量点，特别是当结果要与其他研究组获得的结果进行比较时。
