Effect of contaminants on the adhesion of light-bodied silicones to putty silicones in putty-wash impression technique |
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| Authors: | A H Tjan |
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| Institution: | Department of Restorative Dentistry, Loma Linda University, School of Dentistry, Calif. |
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| Abstract: | This study was concerned with the adhesion of a light-bodied silicone to a putty silicone in a putty-wash impression technique when the preliminary putty impression was contaminated with human saliva or residues from acrylic resins used in the fabrication of provisional restorations by direct technique. Data indicated that condensation and addition silicones differed in their susceptibility toward the tested contaminants. Salivary contamination and chemical residues from the autopolymerizing acrylic resins weakened the bond strength and caused adhesive failure dependent upon the type of silicone impression material used. |
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