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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Bonding amalgam to a resin-modified glass-ionomer base.
    Author: Belcher MA, Kunsemiller JA.
    Journal: Am J Dent; 1999 Dec; 12(6):305-8. PubMed ID: 10850252.
    Abstract:
    PURPOSE: To determine which surface treatment of a resin-modified glass-ionomer (RMGI) will result in optimal bond strength to amalgam when used with an amalgam adhesive. MATERIALS AND METHODS: Fifty discs of Fuji II LC (4 mm thick) were cured in acrylic testing holders and randomly divided into 5 groups of 10 each. The surface of the glass-ionomer was treated in 1 of 5 ways: (1) no treatment (control) (2) no etch, Amalgambond (AB) primer and AB adhesive (3) citric acid etch, AB primer, and AB adhesive (per manufacturer's instructions) (4) 37.5% phosphoric acid etch, AB primer and AB adhesive, and (5) microetch, 37.5% phosphoric acid etch, AB primer and AB adhesive. Amalgam was condensed onto the treated RMGI surface. Samples were stored in water at 37 degrees C and tested at 24 hours for shear bond strength. The data was analyzed statistically by ANOVA followed by Scheffé post hoc tests for significance. Glass-ionomer discs were also treated as described in each group, sputter-coated and examined using a scanning electron microscope. RESULTS: No significant improvement in bond strengths to amalgam was observed with any of the treatments of the RMGI surface. Amalgambond significantly increased the bond strength of the amalgam to the RMGI.
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