title: Powder enrichment effects on film thickness of zinc phosphate cement.
abstract: The effects of powder erichment and subambiant mixing temperatures on the film thickness of three zinc phosphate cements were measured by two methods. A decrease in film thickness accompanied reduced mixing temperatures and standard powder-liquid ratios. Increased powder-liquid ratios with reduced mixing temperatures showed a decreased film thickness when measured according to ADA Material Specification No. 8. Both Fleck's and S. S. White cement showed an increased film thickness when measured by a tapered-die system. Because of the geometry of the preparations, small increases in cement film thickness can be clinically significant when cementing complete veneer crowns.
mesh_terms: D002484:Cementation; D055598:Chemical Phenomena; D002621:Chemistry; D003442:Crowns; D011208:Powders; D013499:Surface Properties; D013696:Temperature; D014783:Viscosity; D015036:Zinc Phosphate Cement
chemical_list: D011208:Powders; D015036:Zinc Phosphate Cement