ワイヤ放電加工表面をもつ骨内インプラント（IAT Fit II^®）の基礎と臨床応用

―第2報　アバットメントと上部構造体について―

抄録

In the previous report, endosseous implant system (IAT Fit II) treated by wire type electric discharge machining had excellent biocompatibility to bone and the high rate of achieving osseointegration in report 1. In this report, the longitudinal data of 217 IAT Fit II implants and 84 superstructures fixed in 64 patients between 1995 to 1997 is presented.
1. The survival rate of the implant bodies during the observation period was 99.5% with 100% of the superstructures remaining clinically functional.
2. Among the 84 superstructures fixed, 41 were cement-retained, and 43 were screw-retained. All superstructural components were bridge-type.
3. Complications occurred in 1 case with fixed-screws and 2 fractured implant bodies, which were replaced successfully.
4. No complication of loosing fixed-screw was reported during the observation period.
The results suggested that the ITA Fit II implant system implant body-abutment-superstructure-complex had excellent prognosis.