title: Modifying the setting rate of an addition-type silicone impression material.
abstract: Two methods for controlling the working time of an addition-type silicone impression material are presented. The progress of the polymerization reaction of this modified system was studied using viscosity and a new "compression set" technique. The physical properties are presented and compared to those typical of condensation silicones, and a method of clinical use is suggested.
mesh_terms: D000480:Alkynes / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D003760:Dental Impression Materials; D004548:Elasticity; D005347:Fibroblasts / Q000187:drug effects; D007509:Irritants / Q000494:pharmacology; D010666:Phenylpropionates / Q000494:pharmacology; D011108:Polymers; D012826:Silicone Elastomers; D013997:Time Factors; D014783:Viscosity
chemical_list: D000480:Alkynes; D003760:Dental Impression Materials; D007509:Irritants; D010666:Phenylpropionates; D011108:Polymers; D012826:Silicone Elastomers