title: Effect of sandblasting on surface roughness of zirconia-based ceramics and shear bond strength of veneering porcelain.
abstract: This study aims to investigate the effect of sandblasting on the surface roughness of zirconia and the shear bond strength of the veneering porcelain. Pre-sintered zirconia plates were prepared and divided into four groups. Group A were not treated at all; group B were first sandblasted under 0.2 MPa pressure and then densely sintered; group C and D were sintered first, and then sandblasted under 0.2 MPa and 0.4 MPa pressures respectively. Surface roughness was measured and 3D roughness was reconstructed for the specimens, which were also analyzed with X-ray diffractometry. Finally after veneering porcelain sintering, shear bond tests were conducted. Sandblasting zirconia before sintering significantly increased surface roughness and the shear bond strength between zirconia and veneering porcelain (p<0.05). Sandblasting zirconia before sintering is a useful method to increase surface roughness and could successfully improve the bonding strength of veneering porcelain.
authors.affiliation: Beijing Institute of Dental Research, Capital Medical University School of Stomatology, Beijing Stomatological Hospital.
authors.forename: Min
authors.initials: M
authors.lastname: He
authors.forename: Zutai
authors.initials: Z
authors.lastname: Zhang
authors.forename: Dongxiang
authors.initials: D
authors.lastname: Zheng
authors.forename: Ning
authors.initials: N
authors.lastname: Ding
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D003801:Dental Veneers; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D033081:Shear Strength; D013499:Surface Properties; D014961:X-Ray Diffraction; D015040:Zirconium / Q000737:chemistry*
chemical_list: D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide