氧化锆个性化基台与钛基边缘适合性研究

目的比较不同品牌的CAD/CAM氧化锆个性化基台与钛基之间的适合性。方法用CAD/CAM分别设计和加工3种氧化锆个性化基台(日进、爱尔创和卡瓦),每种5个。通过扫描电子显微镜,测量氧化锆个性化基台与钛基之间的边缘间隙(MG),比较3种氧化锆个性化基台与钛基之间的边缘适合性。结果卡瓦组(7.19±2.98)μm与日进组(10.25±6.25)μm和爱尔创组(9.87±5.48)μm的边缘间隙的差异具有统计学意义(P<0.05);爱尔创组与日进组的边缘间隙的差异无统计学意义(P>0.05)。结论不同的材料直接影响个性化基台与钛基之间的适合性。在个性化基台与钛基的边缘适合性方面,卡瓦氧化锆明显优于日进及爱尔创氧化锆。

Evaluation of marginal fit between zirconia custom abutment and titanium base

Objective To compare the marginal fit between CAD/CAM zirconia custom abutments of different brands and Ti?base. Methods CAD/CAM system was used to fabricate three groups ( KaVo, Nissin and Upcera) of zirconia custom abutments and each with five samples. The marginal gap ( MG) was evaluated by scanning electron microscope ( SEM) for comparing the marginal fit. Re?sults The mean MG value was (10.25±6.25) μm in Nissin group and (9.87±5.48) μm in Upcera group, which were significantly different from (7.19±2.98) μm in KaVo group (P<0.05). No significant differences were observed between the mean MG values in Nissin and Upcera groups ( P>0.05) . Conclusion Different CAD/CAM materials directly affect the fit between custom abutments and titanium base. As for the marginal fit, KaVo is much better than Nissin or Upcera.