Er:YAG laser와 rotary instruments의 골치유 영향에 대한 조직형태학적 평가

Abstract

Purpose: We evaluated bone healing of skull defect prepared in rats using different devices. Materials & Methods: Forty five rats were randomly assigned to 3 different groups (n=15) according to the type of device: high-speed rotation engine with carbide round bur (diameter: 2 mm), low-speed rotation engine with carbide round bur (diameter: 2 mm), and Er:YAG laser. Specimens obtained after 3 days, 4 and 8 weeks were submitted for histological analysis. Results: 3 days after surgery, no bone formation was seen in all groups. 4 weeks after surgery, 90±8.16% of new bone formation was seen in high-speed groups and 8 weeks after surgery, 100±0% of new bone formation was seen in low-speed and high-speed groups. Conclusion: There were significant differences among the periods after surgery, but no significant differences were observed among the groups as using different devices.