title: Finished surface texture, abrasion resistance, and porosity of Aspa glass-ionomer cement.
abstract: 1. With the finishing agents tested Concise had a smoother surface texture than Aspa. 2. The smoothest surface was on Concise polymerized against a Mylar matrix strip. The smoothest surface for Aspa was obtained with a silicon carbide disk. 3. Aspa abraded about three times as rapidly by volume as Concise when tested by a two-body abrasion method. 4. Significantly more air bubbles were entrapped by hand mixing within Aspa than within Concise. 5. Controlled clinical studies of the glass-ionomer cements are needed before they can be fully evaluated as restorative materials.
mesh_terms: D000180:Acrylic Resins; D000538:Aluminum Silicates; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins; D003738:Dental Cements; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D000180:Acrylic Resins; D000538:Aluminum Silicates; D003188:Composite Resins; D003738:Dental Cements