질화 표면처리된 신장기를 이용한 수직적 골신장술후 효과에 관한 연구

Abstract

Purpose : The purpose of this study was to evaluate the healing effect of osseointegration after implantation by using nitrified vertical distractor. Material and Method : Four adult mongrel dogs, weighting about 9-10 kg, were used in this study. The lower premolars were extracted and vertical distraction was performed using 8 distraction device (left; 4 titanium, right; 4 nitrified) after 10 weeks. Latency period was allowed for 7 days before distraction began. The distraction device was activated with a rate of 0.5mm twice/day for 5 days. After completion of the distraction, the device was removed after retention period for 6 weeks. Simultaneously 24 implants are installed. The dogs are sacrificed after 4 weeks, 8 weeks. Clinical, radiographic, and histologic examinations were performed. Result : Direct bone contact is achieved bone contact is achieved and there were no significant difference between control group and experimental group at implantation area. Conclusion : The results suggest that the nitrified distraction device may have the potential for use in augmentation of the atrophic edentulous ridge.