| 3114 Shear bond strength between orthodontic self-etching primers versus conventional | ||
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J. ERRERA1, J. BURCH1, P. VILLALTA2, F.G.-G. GARCIA-GODOY3, and N. BURNS1, 1Nova Southeastern University, Ft Lauderdale, FL, USA, 2Nova Southeastern University, College of Dental Medicine, Fort Lauderdale, FL, USA, 3Nova Southeastern University Objectives: To determine if self-etching primers would produce shear bond strengths similar to conventional etching systems with phosphoric acid and separate primer application. Methods: Adhesive cylinders (3M Transbond XT Adhesive) were bonded to 45 extracted human premolar teeth according to one of three different protocols. In the control group, 15 teeth were etched with 35% phosphoric acid for 20 seconds, sealant applied (3M Transbond XT Sealant), and an adhesive cylinder was bonded. In the first experimental group, 15 teeth were treated with 3M Transbond Plus Self-Etching Primer and an adhesive cylinder was bonded after one minute. In the second experimental group, 14 teeth were treated with Self-Etching Primer and an adhesive cylinder was bonded after 10 minutes. ANOVA and Student-Newman-Keuls test were used to evaluate the statistical significance of the results. Results: & Conclusions: There was no statistically significant difference between the control group (20.2 ± SD MPA) and the self-etching primer at one minute (19.4 ± SD MPA). The self-etching primer at 10 minutes (24.7 ± SD MPA) produced significantly (P<0.05) greater shear bond strengths as compared to the control and one minute self-etching primer. | ||
| Seq #335 - Adhesion III 10:15 AM-11:30 AM, Saturday, 13 March 2004 Hawaii Convention Center Exhibit Hall 1-2 | ||
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