title: Effect of glass-ionomer base on composite resin hardness.
abstract: The effect of the glass-mm, and 3 mm thicknesses were placed over glass-ionomer bases, and the microhardness of the external surface was compared with that of controls without a base. A significant reduction in surface hardness (p less than 0.05) was determined only for the 1-mm test specimens.
authors.forename: J M
authors.initials: JM
authors.lastname: Berrong
authors.forename: R L
authors.initials: RL
authors.lastname: Cooley
authors.forename: E S
authors.initials: ES
authors.lastname: Duke
mesh_terms: D003188:Composite Resins; D003738:Dental Cements; D005899:Glass Ionomer Cements; D006244:Hardness
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D005899:Glass Ionomer Cements