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3. Effect of glass ionomer base on composite resin hardness;Berrong;Dent. Mater.,1989
4. Glass ionomer-microfil technique for restoring cervical lesions;Bitter;J. Prosthet. Dent.,1986
5. Composite resin and glass ionomer cement: current status for use in cervical restorations;Brackett;Quintessence Int.,1990