지르코니아의 거칠기 증가를 위한 다양한 표면처리방법이 레진시멘트와의 전단결합강도에 미치는 영향
Effects of various zirconia surface treatments for roughness on shear bond strength with resin cement
배강호, 배지현, 허중보, 최재원,
소속 상세정보
배강호 ( Bae Gang-Ho ) - PNUADD Co., Ltd.
배지현 ( Bae Ji-Hyeon ) - PNUADD Co., Ltd.
허중보 ( Huh Jung-Bo ) - Pusan National University School of Dentistry Department of Prosthodontics
최재원 ( Choi Jae-Won ) - Pusan National University School of Dentistry Department of Prosthodontics
Abstract
Purpose: The purpose of this study was to evaluate the effects of various zirconia surfacetreatment methods on shear bond strength with resin cements.
Methods: We prepared 120 cylindrical zirconia specimens (?10 mm×10 mm) using computer-aided design/computer-aided manufacturing (CAD/CAM). Each specimen was randomlysubjected to one of four surface treatment conditions: (1) no treatment (control), (2)airborne-particle abrasion with 50 μm of Al2O3 (A50), (3) airborne-particle abrasion with 125μm of Al2O3 (A125), and (4) ZrO2 slurry (ZA). Using a polytetrafluoroethylene mold (?6 mm×3mm), we applied three resin cements (Panavia F 2.0, Super-Bond C&B, and Variolink N) toeach specimen. The shear bond strength tests were performed in a universal testing machine.
The surfaces of representative specimens of each group were evaluated under scanningelectron microscope. We used one-way analysis of variance (ANOVA), two-way ANOVA,and post hoc Tukey honest significant difference test to analyze the data.
Results: In the surface treatment method, the A50 group showed the highest bond strength,followed by A125, ZA, and control groups; however, no significant difference was observedbetween A50 and A125, A125 and ZA, and ZA and control (p>0.05). Among the resin cements,Super-Bond C&B showed the highest shear bond strength, followed by Panavia F 2.0and Variolink N (p<0.05).
Conclusion: Within the limitations of this study, application of airborne-particle abrasion andZrO2 slurry improved the shear bond strength of resin cement on zirconia.
키워드
Resin cements; Roughness; Shear strength; Surface treatment; Zirconium oxide
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