ADHESIVE PROPERTY OF POLYSULFIDE IMPRESSION MATERIAL ON THE TRAY RESIN AND BORDER MOLDING MATERIALS / 대한치과보철학회지

ABSTRACT

This study was investigated to compare the bond strength of polysulfide adhesive between tray resin and border molding materials and to evaluate the effect of saliva contamination on them. We made the 135 resin tray secimens with a dimension of 1 X 1 X 1cm and divided them into 3 groups by the materials 1) Quicky group, 2) Compound group, and 3) Impregum group Each group was subdivided by saliva contimination. Group S I applied adhesive without saliva contamination Group S2 applied adhesive after drying 15seconds after saliva contamination Group S3 applied adhesive no after saliva contamination. Tensile tests were performed with a Universal Load testing machine. Results showed Impregum group significantly higher bond strength than Quicky group, but there was no significant difference in adhesive bond strength between Compound group and Quicky group in experimental group by materials In experimental group by saliva contamination, S1 group is signifiantly higher bond strength than S2 group and S2 group is signifiantly higher bond strength than S3 group in Quicky group and S1, S2 group is signifiantly higher bond strength than S3 group in Compoud group and ImpregLun group. Impression compound and Impregum F which are usually used as an individual tray border molding material can be said to be satisfied in adhesive bond strength to polysulfide impression materials. After try-in and clinical adjustment are performed, a custom tray should be properly rinsed and air dried before tray adhesive was placed.