Non-thermal plasma increase bond strength of zirconia to a resin cement / Plasma não-térmico aumenta a resistência de união da zircônia a um cimento resinoso
Silva, Beatriz Togoro Ferreira da; Trevelin, Lívia Tosi; Teixeira, Fernanda de Sá; Salvadori, Maria Cecília; Cesar, Paulo Francisco; Matos, Adriana Bona.
Braz. dent. sci;
21(2): 210-219, 2018. tab, ilus
Artículo
en Inglés
| LILACS, BBO | ID: biblio-906173
Objective:
This study investigated the influence of different surface treatments on zirconia surface energy, roughness and microshear bond strength. Material andMethods:
Forty eight slices of Yttriastabilized tetragonal zirconia polycrystal (Y-TZPVITA In-Ceram® YZ for inLab®) (6.4 x 3.2 x 1.6 mm) were divided into 3 groups according to the surface treatment (n = 16) YTZP_control -untreated; YTZP_plasma -surface treatment with non-thermal oxygen plasma; YTZP_primer - coating with ceramic primer. Surface energy (n = 6) was measured with a goniometer; and surface roughness (n = 10) was analyzed with a 3D profilometer were performed over zirconia surface. On the same specimens of surface roughness, on the treated zirconia's surface, resin cement (PANAVIA V5 - Kuraray Noritake Dental) was built up by inserting the resin cement into Tygon tubes (1 mm of internal diameter X 1 mm length). After 24h storage, microshear test was assessed. Data were analyzed by one-way ANOVA and Tukey posthoc test (p < 0.05).Results:
Nonthermal oxygen plasma treated specimens exhibited higher statistically significant surface energy (p = 0.00) and bond strength (p = 0.00) when compared to control and primer groups. Roughness test (p = 0.897) could not detect statistical difference among the tested groups.Conclusion:
Non-thermal oxygen plasma should be a suitable alternative for zirconia surface treatment prior to luting hence it improved microshear bond strength and provided higher surface energy without affecting surface roughness. (AU)
Biblioteca responsable:
BR243.1
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