성견에서 임플란트의 표면처리에 따른 골형성의 조직형태계측학적인 평가

Abstract

Purpose : The purpose of this study was to evaluate the influence of implant surfaces including smooth and Hydroxyapatite(HA)-coated surfaces in dogs. Materials and Methods : The first through fourth mandibular premolars were extracted from eight young adult dogs. Twelve weeks after extraction, implantation was performed at the extraction sites. Total forty implant fixtures were implanted on mandible in dogs. Twenty machined implants served as controls and twenty HA-coated surfaces served as tests. Two weeks and four weeks after implantation, the dogs were sacrificed; the hemi-mandibles were obtained and processed histologically to obtain non-decalcified sections. Longitudinal sections were made for each implant and analyzed using light microscopy.Results : The implant success rate in all the groups was 83.3% in this study. Histomorphometrically, the experimental group had a better percentage of bone-implant contact than the control group (p <0.05) and there was a significant difference between the two weeks groups and four weeks groups after implantation (p < 0.05). Conclusions : Our results suggest that, in the early period of peri-implant healing, the implant surface morphology seemed to influence the increase of peri-implant osteogenesis.