抄録
The effect of premature loading on hydroxyapatite (HA) coated blade form implants placed in dog mandibles was histologically examined. Two dogs weighing 25 kg were used in this study. Four implants, two HA implants and two titanium (Ti) implants as control, were placed in the dog mandibles. Restoration was splinted with neighboring natural tooth 4 weeks after implant placement.The animals were sacrificed either 4 or 24 weeks after the installation of restoration. Histologic sections disclosed that Ti implant had become encapsulated with fibrous layer, and HA implant showed good adaptation between the HA coating layer and bone tissue. Consequently, these findings suggested that HA implant would tolerate premature loading, and that there was a possibility of a shorter healing period prior to loading.
