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- Title
Repair Bond Strength of a Resin Composite to Alumina-Reinforced Feldspathic Ceramic.
- Authors
Goia, Tamiye Simone; Pereira Leite, Fabíola Pessôa; Valandro, Luiz Felipe; Ôzcan, Mutlu; Bottino, Marco Antonio
- Abstract
This study compared the microtensile bond strength of a repair resin to an aluminareinforced feldspathic ceramic (Vitadur-α, Vita) after 3 surface conditioning methods: Group 1, etching with 9.6% hydrofluoric acid for 1 minute plus rinsing and drying, followed by application of silane for 5 minutes; group 2, airborne particle abrasion with 110-mm aluminum oxide using a chairside air-abrasion device followed by silane application for 5 minutes; group 3, chairside tribochemical silica coating with 30-µm SiOx followed by silane application for 5 minutes (N = 30). Group 1 presented the highest mean bond strength (19.7 ± 3.8 MPa), which was significantly higher than those of groups 2 (10 ± 2.6 MPa) and 3 (10.4 ± 4 MPa) ( P < .01). Scanning electron microscope analysis of the failure modes demonstrated predominantly mixed types of failures, with adhesive and/or cohesive failures in all experimental groups.
- Subjects
DENTAL bonding; STRENGTH of materials; DENTAL resins; FELDSPAR; DENTAL ceramics; ABRASION resistance
- Publication
International Journal of Prosthodontics, 2006, Vol 19, Issue 4, p400
- ISSN
0893-2174
- Publication type
Article