EFFECT OF PROVISIONAL LUTING AGENTS ON POLYVINYL SILOXANE IMPRESSION MATERIAL

Eugenol-containing cements have been traditionally selected for seatin g provisional restorations, but incomplete polymerization of polyvinyl siloxane impression materials has been attributed to these cements. T his study clinically evaluated the inhibitory effect on polymerization of a specific polyvinyl siloxane impression material with five luting agents used for provisional restorations. Three of these luting agent s contained eugenol, whereas two interim cements did not contain eugen ol, A total of 60 human posterior teeth were prepared for complete cro wns, fitted for provisional crowns, and cemented with interim luting a gents, After 2.5 weeks the provisional crowns were removed, the cement on tooth preparations was removed with an explorer, and impressions w ere made. The results revealed that none of the luting agents in this investigation had an inhibitory effect on polymerization of polyvinyl siloxane impression materials.