플라즈마 표면 처리 방법이 IPS Empress 2 ceramic과 레진 시멘트의 전단결합강도에 미치는 영향

Abstract

The purpose of this study was to determine whether plasma surface treatment methods can provide a better bonding between the self adhesive resin cement and the IPS Empress 2 ceramic. 35 specimens were prepared from the IPS Empress 2 ceramic. The surface treatment of ceramic was used the plasma coating with acrylic acid. The ceramic surface was divided into 5 groups : Control group. 9 % HF + silane treatment, Group 1. Plasma coating with 30 W, Group 2. Plasma coating with 50 W, Group 3. Plasma coating with 70 W, Group 4. Plasma coating with 90 W. All specimens were luted with self adhesive resin cement (Relay-X Unicem) and were immersed in distilled-water at 37°C for 1 day. All specimens were subjected to a shear bond test to evaluate their bond strengths. The results of bonding strength were statistically analyzed using ANOVA test and Tukey test (p < 0.05).

The results were as follows:

The control group had generally higher the shear bond strength than the plasma surface treatment groups (Group 1～4) and there was a significant difference on the shear bond strength (p < 0.05). And among the plasma surface treatment groups (Group 1~4), there were no significant differences ( p > 0.05). The method of plasma surface treatment using acrylic acid on ceramic surface was not improved the shear bond strength of resin cement.