Surface texture of stone model setting against elastomer impression materials.
It has been shown that stone models poured in impressions with silicone rubber tend to develop a surface with pits 0.1-1 mm in diameter, sometimes lying closely together over the whole die. Some investigators have considered these defects to be related to the high contact angle of elastomers. The present investigation has not been able to verify this statement but has instead called attention to the fact that silicone rubber, and particularly vinyl silicone: so-called A-silicone, when newly set, will generate a great deal of static electricity.
D003760:Dental Impression Materials / Q000494:pharmacology*; D003761:Dental Impression Technique; D004560:Electricity; D003765:Models, Dental; D012826:Silicone Elastomers / Q000494:pharmacology*; D013499:Surface Properties
D003760:Dental Impression Materials; D012826:Silicone Elastomers