title: Wettability of a hydrophilic addition silicone impression material.
abstract: Silicone impression materials, long noted for their poor wettability, have typically demonstrated contact angles with water greater than 90 degrees. This study compared the wettability of a new hydrophilic addition silicone with that of other impression materials. Specimens from various viscosities of polyether, polysulfide, hydrophobic addition silicone, and hydrophilic addition silicone were formed against a smooth surface. The advancing contact angle of a saturated aqueous solution of CaSO4 on the impression materials was measured after 1 minute. Mean contact angles were calculated and results were analyzed by ANOVA and a multiple comparison of means procedure. Differences between pairs of contact angle means were found to be statistically significant except for the polyether-hydrophilic addition silicone pair. The wettability of the hydrophilic addition silicone impression material was found to be not significantly different from that of a polyether impression material.
authors.affiliation: Department of Restorative Dentistry, Medical College of Virginia, School of Dentistry, Richmond.
authors.forename: D H
authors.initials: DH
authors.lastname: Pratten
authors.forename: R G
authors.initials: RG
authors.lastname: Craig
mesh_terms: D002133:Calcium Sulfate; D003300:Copper; D019327:Copper Sulfate; D003735:Dental Casting Technique; D003760:Dental Impression Materials; D012117:Resins, Synthetic; D012826:Silicone Elastomers; D013440:Sulfides; D013499:Surface Properties; D014867:Water
chemical_list: D003760:Dental Impression Materials; C022821:Impregum; D012117:Resins, Synthetic; D012826:Silicone Elastomers; D013440:Sulfides; D014867:Water; D003300:Copper; C032915:polysulfide; D019327:Copper Sulfate; D002133:Calcium Sulfate