샌드블라스팅 처리와 라이너가 지르코니아와 전장도재의 전단결합강도에 미치는 영향
Effect of sandblasting and liner on shear bond strength of veneering ceramic to zirconia
김기백, 김재홍,
소속 상세정보
김기백 ( Kim Ki-Baek ) - Daejeon Health Institute of Technology Department of Dental Laboratory Technology
김재홍 ( Kim Jae-Hong ) - Catholic University of Pusan College of Health Sciences Department of Dental Laboratory Science
Abstract
Purpose: This study aimed to compare the shear bond strength between zirconia cores and veneer ceramics as per the sand blasting and liner treatments.
Methods: The following 4 groups of zirconia-veneering ceramic specimens were prepared: (1) Group I, untreated; (2) Group II, with 110 μm aluminium oxide (Al2O3) sandblasting; (3) Group III, with liner (IPS e.max ZirLiner; Ivoclar Vivadent); and (4) Group IV, with 110 μm Al2O3 sand blasting and liner. Surface roughness was measured for all the prepared specimens, and the surface morphology was observed using a scanning electron microscope. All the samples (n=40) were fixed with measuring jigs, and shear bond strengths were obtained using a universal testing machine with a crosshead speed of 0.5 mm/min. The shear bond strength data were analyzed using one-way analysis of variance and t-test. The post hoc comparison was performed using the Tukey’s test (α=0.05).
Results: A significant difference in the surface roughness was observed between the specimens of groups I and II (p<0.05). Surface treatment with liner and sandblasting showed higher shear bond strength between zirconia core and veneering ceramic (p<0.05).
Conclusion: The sand blasting and liner treatment increased the shear bond strength between zirconia core and veneering ceramic.
키워드
Liner; Sand blasting; Shear bond strength; Veneering ceramic; Zirconia
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