Surface roughness and bond strength between Y-TZP and self-adhesive resin cement after air particle abrasion protocols.
The aim of this study was to evaluate the influence of different air particle abrasion (APA) protocols-with variations in particle types, duration of application, and the distance between the device tip and the ceramic-on the surface roughness (SR) of zirconia-based ceramic (yttria-stabilized tetragonal zirconia polycrystal [Y-TZP]) and the shear bond strength (SBS) between Y-TZP and resin cement. In total, 135 sintered Y-TZP blocks were polished and divided into 9 groups according to 3 factors: particle (alumina vs alumina coated with silica), duration (5 vs 10 seconds), and distance (contact vs 10 mm away). All 3 factors significantly influenced the SR values between the experimental groups and the control group. For SBS, only the particle type was a statistically significant factor. Results showed that air particle abrasion with silica-coated alumina resulted in higher SBS, even though the SR values associated with those groups were not the highest.
Rafael Santiago de
RS
Sousa
Fernanda
F
Campos
Hugo Ramalho
HR
Sarmento
Maria Luiza Lima
ML
Alves
Amanda Maria de Oliveira
AM
Dal Piva
Laísa Daniel
LD
Gondim
Rodrigo Othávio Assunção
RO
Souza
D020906:Air Abrasion, Dental / Q000379:methods*; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D006801:Humans; D019279:Resin Cements / Q000627:therapeutic use*; D013499:Surface Properties; D015019:Yttrium / Q000627:therapeutic use*; D015040:Zirconium / Q000627:therapeutic use*
D019279:Resin Cements; C499362:yttria stabilized tetragonal zirconia; D015019:Yttrium; D015040:Zirconium
Y-TZP; adhesion; air particle abrasion; zirconia