Bone-to-implant contact percentage at Trausim implants: an experimental study in dogs.

PURPOSE: The aim of this study was to evaluate the Trausim implants bone remodelling at early stage of implantation, to provide necessary experimental parameters for improving the characteristics of the surface treatment technique. METHODS: 14 Labrador dogs were prepared for teeth extraction of the mandible first premolar to first molar under general anesthesia. After bone healing for 3 months, each dog was implanted with 3 Trausim implant and 3 Straumann implant. 2,4,8 and 12 weeks later, the animals were sacrificed and bone-to-implant contact (BIC%) was assessed using histological and histomorphometrical methods. All statistical analysis was performed using SPSS 19.0 software package. RESULTS: All 84 implants achieved clinical stability at the time of insertion, the healing was uneventful. Bone-to-implant percentage was highest at 8-week for Trausim implant (71.64%±6.66%) and Straumann implant (72.98%±8.97%). At 12-week it was lower than at 8-week, but stability was as usual. Moreover, at different healing periods, no significant difference for BIC% between Trausim and Straumann implants was found. CONCLUSION:The present study showed that Trausim implants induce good bone-to-implant contact after implantation. The BIC% was similar to Straumann implants. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality(09411955000). [ABSTRACT FROM AUTHOR]