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| Author(s): |
Mayra de Mello Fabião
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba |
| Defense date: | 2012-02-15 |
| Examining board members: |
Luís Roberto Marcondes Martins;
William Cunha Brandt;
Bruno de Castro Ferreira Barreto
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| Advisor: | Luís Roberto Marcondes Martins |
| Abstract | |
The aim of this study was to evaluate the micro shear bond strength of three resin cements (RelyX ARC, RelyX U100 and Panavia F), with differente adhesive protocols and two ceramic types (feldspatic - d.SIGN and lithium dissilicate reinforced - e.max) photocured through ceramic. In addition it was measured the degree of conversion of each group. For bond strength test, the adhesives were applied in the ceramic surface, and the resin cement cylinders were confectioned for the micro--?shear bond strength test (8 specimens with 4 cylinders for each group). A device was developed to permit light cure through ceramic. Fractures specimens were SEM analyzed to classify the failure mode. For DC analysis, the resin cements were manipulated and applied into a mold. The adhesive protocols were performed on a Mylar strip and positioned upon the manipulated cement. A ceramic disc respective to each group was placed above the Mylar strip and the light curing was performed (n=5). Data were statistically analyzed (p?0.05) using a two--way ANOVA and Tukey ?s test. Feldspatic ceramic presented better results than lithium dissilicate reinforced ceramic for both methodologies. RelyX ARC presented higher bond strength values than the other cements. Different adhesive protocols significantly affect bond strength and DC values in abcense of adequate ligth intensity (AU) | |
| FAPESP's process: | 09/04373-0 - Evaluation of the bond strength of resin cements to ceramics with use of different adhesive protocols |
| Grantee: | Mayra de Mello Fabião |
| Support Opportunities: | Scholarships in Brazil - Master |