Damping characteristics of bone‐to‐implant interface; A clinical study with the Periotest® device.

Abstract

The Periotest device was used to evaluate the damping characteristics of different bone-to-implant interfaces of Brånemark implants. Implant and abutment lengths were found to have a significant influence on Periotest value (PTV). There was no statistical difference between PTVs of implants located in the anterior and posterior areas of the same jaw at abutment connection. No differences were found between PTVs of standard and self-tapping implants. PTVs at abutment connection were highly influenced by the bone quality. The contact with two corticals, one at each extremity of the implant, was of a greater influence in the maxillary than in the mandibular jaw, indicating a firmer anchorage between the bi-cortical implants and the surrounding bone. A progressive decrease of PTVs over time was observed, significant up to 5 years of loading.

Effects of Early Moderate Loading on Implant Stability: A Retrospective Investigation of 634 Implants with Platform Switching and Morse‐Tapered Connections

“…Reported PTVs were lower in the mandible than in the maxilla. The presence of a mandibular cortical layer is likely responsible for this finding, which has been reported in other clinical studies . In the present study, the bone density at the implant sites was evaluated during the initial osteotomy using a small pilot drill.…”

Resonance frequency measurements of implant stability in the dog mandible: experimental comparison with histomorphometric data

“…One may argue that cadaver studies are biased by the fact that a bone-implant interface after placement does probably respond differently to excitation in a vital, perfused environment than in a bloodless cadaver. Differences in RFA values did not correspond with histomorphometric parameters in an experimental in vivo study 37 and a recently published clinical study failed to show a significant decrease of RFA mean values in failing implants, but there was a significant decrease between clinically stable and rotation mobile implants 35 . In addition, an experimental study in dogs found a correlation between radiographic bone levels and ISQ values 34 .…”

“…Hence, there is only indirect evidence that removal torque corresponds to bone-implant contact rate 29 . Experimental results suggest that there is also no obvious link between RFA values and removal torque, as STENPORT et al 37 could not find a difference in removal torque despite differences in RFA values in implants in rabbit tibiae.…”

Effect of decreased implant healing time on bone (re)modeling adjacent to plateaued implants under functional loading in a dog model

“…Periotest was introduced to measure tooth and implant movement by Schulte et al [28], and was demonstrated to be useful for the assessment of implant stability [29–31]. In our study, the EL implants showed poor stability during abutment placement, but greater stability at 2 and 4 weeks following loading when compared to DL implants by means of PTV.…”