Abstract
In this study we evaluated the clinical performance of HA-coated implants (Integral®,Calcitek Carlsbad CA) during the period under for 10 to 13 years. Weimplanted 579 implants in 202 patients at four facilities and analyzed the clinical prognosis of the implants. Two implants failed within one year after implantation, because of the early failure of osseointegration. There were 86 failures of implants after that period during the maintenance, because of periimplantitis and loss of osseointegration.Therefore, the success rate of the HA-coated implants investigated in this study during the overall 10-13years was 85.1%. We investigated the factors affecting prognosis such as the sex, the age, the implant diameter, the implant length, and the implant location and found statistically poor prognosis on the factor of length( <8mm) and the location (mandible) of the implants. We also found that HA-coated implants suffered from the resorption of circumference bone of the implant body and dropped out during the maintenance period. These results suggested the prognosis of HA-coated implants were influenced by the method of surface treatment of HA coating, the implant body structureand the connecting mechanism of the implant body and the abutment.
