Effect of conditioning methods on the microtensile bond strength of phosphate monomer-based cement on zirconia ceramic in dry and aged conditions.

摘要: The objective of this study was to evaluate the durability bond strength between a resin cement and aluminous ceramic submitted various surface conditioning methods. Twenty-four blocks (5 X 5 4 mm 3) glass-in filtrated zirconia-alumina (inCeram Zirconia Classic) were randomly divided into three treatment groups: ST1-Air-abrasion with 110-mu m Al2O3 particles + silanization; ST2-Laboratory tribochemical silica coating method (110-mu Al2O3, ilO-PM Silica) (Rocatec) ST3-Chairside (30-mu SiOx) (CoJet) silanization. Each treated block placed in its silicone mold exposed. (Panavia F) prepared injected over surface. Specimens sectioned achieve nontrimmed bar specimens (14 sp/block) that two conditions: (a) Dry-microtensile test after sectioning; (b) Thermocycling (TC)-(6,000X, 5-55 degrees C) water storage (150 days). Thus, six experimental groups obtained (11 = 50): Gr1-ST1 dry; Gr2-ST1 TC. Gr3-ST2 Gr4-ST2 TC; Gr5-ST3 Gr6ST3 After microtensile testing, failure types noted. ST2 (25.1 +/- 11) ST3 (24.1 7.4) presented statistically higher (MPa) than STI (17.5 8) regardless aging conditions (p <0.0001). While Gr2 revealed lowest results (13.3 6.4), other (21.7 7.4-25. 9 9.1) showed no significant differences (two-way ANOVA Tukey's test, 0.05). majority failures mixed (82%) followed by adhesive (18%). significantly incidence ADHESIVE (54%) those 0.0001). Both laboratory chairside plus silanization durable strength. aging, airabrasion largest decrease indicating is fundamental for testing acid-resistant Arconia ceramics order estimate their long-term performance mouth. (c) 2007 Wiley Periodicals, Inc.