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Bond strength of Y-TZP–zirconia ceramics subjected to various surface roughening methods and layering porcelain

Authors
 S. T. Kim  ;  H. J. Cho  ;  Y. K. Lee  ;  S. H. Choi  ;  H. S. Moon 
Citation
 SURFACE AND INTERFACE ANALYSIS, Vol.42(6-7) : 576-580, 2010 
Journal Title
 SURFACE AND INTERFACE ANALYSIS 
ISSN
 0142-2421 
Issue Date
2010
Keywords
Y‐TZP ; roughening ; sandblasting ; shear strength
Abstract
The interface between yttrium oxide partially stabilized tetragonal zirconia polycrystalline (Y-TZP) core and veneering porcelain is the site of most clinical failures. Many efforts have focused on increasing the bond strength between Y-TZP core and veneering porcelain, and such approaches include increasing the surface roughness and providing undercuts. However, each surface roughening method carries limitations. The specific aim of this study was to test the bond strengths of Y-TZP subjected to different methods (sandblasting, fine polising, and rough polising) and of veneering porcelain. Presintered zirconia blocks with rectangular parallelepiped shape were prepared, and the surfaces were roughened with different methods before sintering. Shear strength of each zirconia–veneer interface was measured from 15 specimens. The surface at the fractured areas after shear test was investigated using an optical microscope. In conclusion, Y-TZP subjected to sandblasting showed inferior shear strength compared to other groups. Cohesive fracture was observed in the sandblasting group; combination of cohesive and adhesive fracture was observed in the control, fine polishing, and rough polishing groups
Full Text
http://onlinelibrary.wiley.com/doi/10.1002/sia.3209/abstract
DOI
10.1002/sia.3209
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Periodontics (치주과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Tae(김성태)
Moon, Hong Seok(문홍석) ORCID logo https://orcid.org/0000-0001-8118-8145
Lee, Yong Keun(이용근)
Choi, Seong Ho(최성호) ORCID logo https://orcid.org/0000-0001-6704-6124
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/102231
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