색소체용액 침투가 지르코니아 및 전장용 세라믹의 전단결합강도에 미치는 영향
Influence of coloring liquids on the shear bond strength between zirconia and veneering ceramic
정종현, 오계정,
소속 상세정보
정종현 ( Jung Jong-Hyun ) - 광주보건대학교 치기공과
오계정 ( Oh Gye-Jeong ) - 전남대학교 미래형생체부품소재 RIS 사업단
KMID : 0362120160380040291
Abstract
Purpose: This study was to evaluate the effect of coloring liquids on the shear bond strength between zirconia and veneering ceramic.
Methods: Zirconia(15 mm in diameter, 2.5 mm in thickness; n=40) used in the experiment were divided into 5 groups depending on the coloring liquid. Each specimen were polished using a polishing machine(LaboPol-2, Struers, UK). A cylinder of veneering porcelain(6 mm in diameter, 3 mm in thickness) was fabricated and fired on zirconia surfaces. The shear bond strength was measured using a universal testing machine(Model 4302, Instron, USA). All data were analyzed statistically using a one-way ANOVA and Tukey's multiple comparisons test. After the shear bond test, fracture surfaces were examined by SEM.
Results: Colored zirconia showed a higher shear bonding strength than that of uncolored zirconia except for colored zirconia immersed in Zirkonzahn coloring liquid. In particular, colored zirconia immersed in Kuwotech coloring liquid showed the highest shear bond strength. After the shear bond test, mixed failure patterns were mainly observed in the failure between zirconia and veneering ceramic.
Conclusion: Coloring liquid enhanced the shear bond strength zirconia and veneering ceramic than uncolored zirconia.
키워드
All-ceramic ; Coloring liquid ; Shear bond strength ; Veneering ceramic ; Zirconia
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