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  • Title: Enamel-resin bond durability of self-etch and etch & rinse adhesives.
    Author: Osorio R, Monticelli F, Moreira MA, Osorio E, Toledano M.
    Journal: Am J Dent; 2009 Dec; 22(6):371-5. PubMed ID: 20178215.
    Abstract:
    PURPOSE: To evaluate the degradation of resin-enamel interfaces bonded with different adhesive systems. METHODS: Flat enamel surfaces were ground buccally on bovine incisors. Two etch & rinse self-priming adhesives (Single Bond, Prime & Bond NT), three two-step self-etch adhesives (Clearfil SE Bond, Resulcin Aquaprime, NRC/Prime & Bond NT) and two all-in-one adhesives (Etch & Prime 3.0, Adper Prompt-L-Pop) were used for bonding. A hybrid resin composite (Tetric Ceram) was selected for coronal build-up. Bonded specimens were stored in water at 37 degrees C for 24 hours, 6 months and 1 year, respectively, and then sectioned into 1 mm2 beams. Each microtensile stick was loaded in tension until failure (crosshead speed: 0.5 mm/minute). Bond strength data were analyzed with two-way ANOVA and Student Newman Keuls tests (P < 0.05). Etching patterns resulting from phosphoric acid etching and self-etch adhesives application on ground enamel were analyzed under SEM. RESULTS: All adhesives attained similar bond strengths after 24 hours. All-in-one adhesives and Resulcin Aqua Prime recorded a significant reduction in bond strengths after 6 months and 1 year of water aging.
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