Artículos de revistas
Surface roughness and bond strength between Y-TZP and self-adhesive resin cement after air particle abrasion protocols
Fecha
2016-09-01Registro en:
General Dentistry, v. 64, n. 5, p. 50-55, 2016.
0363-6771
2-s2.0-84989824939
Autor
University Center of João Pessoa
Federal University of Pelotas
Federal University of Paraíba
Universidade Estadual Paulista (UNESP)
Federal University of Rio Grande do Norte
Institución
Resumen
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.