不同清洁方法对高透氧化锆粘接强度和表面润湿性的影响

Effect of different cleaning methods on bond strength and surface wettability of high translucency zirconia

目的:研究不同清洁方法对唾液污染的高透氧化锆与自粘接树脂水门汀间剪切粘接强度和表面润湿性的影响。方法:制备80个高透氧化锆试件,随机分为5组(n=16),即对照组(无污染处理)、75%乙醇组、喷砂组、清洁剂组和大气压冷等离子体处理组等。测量表面接触角,测试剪切粘接强度,观察断裂模式。采用SPSS 26.0软件包对数据进行统计学分析。结果:大气压冷等离子体组的接触角最小(P<0.05);喷砂组、清洁剂组及大气压冷等离子体组的剪切粘接强度与对照组相比,无统计学差异(P>0.05),但均显著大于75%乙醇组(P<0.05);大气压冷等离子体组混合断裂模式增多。结论:喷砂、清洁剂及大气压冷等离子体清洁唾液污染的高透氧化锆,可获得与未被唾液污染前相当的粘接强度;大气压冷等离子体可显著提高高透氧化锆的表面润湿性。

PURPOSE:To study the effect of different cleaning methods on the shear bond strength of self-adhesive resin cement to saliva-contaminated high translucency zirconia and surface wettability.METHODS:Eighty zirconia specimens were randomly divided into 5 groups(n=16),i.e.,control group(not contaminated),75%ethanol group,cleaning paste group,airborne-particle abrasion group,and atmospheric pressure cold plasma group.The contact angles was measured,shear bond strength were examined,and fracture types were determined.SPSS 26.0 software package was used for statistical analysis of the data.RESULTS:The atmospheric pressure cold plasma group produced the lowest contact angle(P<0.05).The shear bond strength of the airborne-particle abrasion group,the cleaning paste group and the atmospheric pressure cold plasma group respectively were similar to the control group without significant difference(P>0.05),while those were significantly higher than 75%ethanol group(P<0.05).The mixed fracture mode of the atmospheric pressure cold plasma group evidently increased.CONCLUSIONS:Airborne-particle abrasion,cleaning paste and atmospheric pressure cold plasma overcome the effects of saliva contamination,producing the shear bond strength to zirconia similar to the control group.The atmospheric pressure cold plasma improves hydrophilicity of high translucency zirconia significantly.