Abstract
In this experimental study using adult Shepherd dogs, we examined whether the periotest values (PTVs) represent the interface between implants and regenerative bone or not.
1. PTV
PTVs of all ITI-Bonefit® were almost the same and the mean was -4.5. PTVs of all Cherchève implants showed the mean of ＋5.5. PTVs of BIOCERAM® -Porous implants were very divergent and the mean was ＋1.4 (maximum 25.2, minimum-5.0).
2. Histological Inspection
In some cases of ITI-Bonefit® and Cherchève implants, bone was resorbed very hard at the neck region. But the implants were in contact with regenerative bone. In particular, a BIOCERAM®-Porous implant was surrounded by soft tissue, showing the maximum PTVs of-25.2. By histologically sampling a part of implants were found to be in contact with regenerative bone showed a decrease in PTV. In particular, BIOCERAM®-Porous implant formed a regenerative bone ingrowth into the pore, and the mean of PTVs was -2.1.
