Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Effect of sandblasting and liner on shear bond strength of veneering ceramic to zirconia

샌드블라스팅 처리와 라이너가 지르코니아와 전장도재의 전단결합 강도에 미치는 영향

  • Kim, Ki-Baek (Department of Dental Lab Science, Daejeon Health Institute of Technology) ;
  • Kim, Jae-Hong (Department of Dental Laboratory Science, College of Health Science, Catholic University of Pusan)
  • 김기백 (대전보건대학교 치기공학과) ;
  • 김재홍 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2021.02.24
  • Accepted : 2021.03.17
  • Published : 2021.03.30
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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 ㎛ aluminium oxide (Al2O3) sandblasting; (3) Group III, with liner (IPS e.max ZirLiner; Ivoclar Vivadent); and (4) Group IV, with 110 ㎛ 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.

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References

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