성견에서 수산화인회석 피복된 임플란트 식립시 피복 두께에 따른 골형성 비교 평가

Abstract

Purpose: This study was to compare the BIC(bone implant contact), NBFR (new bone formation rate) of implants with different HA(hydroxyapatite) coating thickness and implantation period. Materials and Method: Six dogs, weighing from 10 to 15 kg, were used in this study. The fixtures, with HA coating of different thickness made by Dentis, were implanted for 12 weeks in Right iliac crestal bone sites and for 6 weeks in Left iliac crestal bone sites. Implants in the control group were coated with resorbable blast medium(RBM) while those in the experimental group were coated with HA of different thickness. The thicknesses of HA coating were 1 μm, 5 μm, and 15 μm each. All the dogs were sacrificed after 12 weeks and histologic, and radiologic examinations were performed. Results: The implants were all successful and there was significant difference between the samples in the control and experiment group at 6 weeks, but there was no significant difference between the samples in the control and experimental group at 12 weeks. Conclusion: The results suggested that HA coating implant may positively affect early osseointegration but coating thickness has no significant effect on osseointegration.