J Korean Acad Prosthodont.  2001 Aug;39(4):351-365.

A STUDY ON THE TENSILE BOND STRENGTH BETWEEN VARIOUS RESIN TRAY MATERIALS AND RUBBER IMPRESSION MATERIALS

Abstract

For accurate impression taking, accurate impression material, solid individual tray, and bond strength between impression materials and resin tray are important factors. The purpose of this study was to evaluate tensile bond strength of rubber impression materials to various tray resin materials. This study tested the time dependent tensile bond strength between commercial brands of polyether, polysulfide, additional silicone impression materials and commercial brands of self curing tray resin, light activited tray resin when applying adhesive. Resin specimens were made with 20mm in diameter, 2mm in thickness. I made total 360 specimens, 10 per each group and the tensile bond strength was measured by using the Instron(M100EC(R), Mecmesin Co., England). The results were as follows: Comparisons of various impression materials 1.In case of Impregum F(R), the bond strength of tray resin was decreased in order of SR Ivolen(R), Ostron 100(R), Instant tray mix(R), Lightplast(R). All groups excluding Ostron 100(R), Instant tray mix(R) are significant difference(p<0.05). Drying time after applying adhesive, the tensile bone strength of tray resin was insignificantly decreased in order of 10 min drying time group, 1 min drying time group, 5 min drying time group. 2.In case of Permlastic regular(R), the bone strength of tray resin was insignificantly decreased in order of Ostron 100(R), SR Ivolen(R), Instant tray mix(R), Lightplast(R). About drying time after applying adhesive, the tensile bond strength of tray resin was significantly decreased in order of 5 min drying time group, 10 min drying time group, 1 min drying time group(p<0.05). 3.In case of Exaflex regular(R), the bond strength of tray resin was decreased in order of Lightplast(R), SR Ivolen(R), Instant tray mix(R), Ostron 100(R), Lightplast(R) was significant difference(p<0.05). About drying time after applying adhesive, the tensile bond strength of tray resin was decreased in order of 5 min drying time group, 10 min drying time group, 1 min drying time group(p<0.05), Especially 5 min drying time group was significant difference(p<0.05). According to the results of this study, we can see the greatest tensile bond strength when using Impregrm F(R) and Permlastic regular(R) with self curing tray resin, when using Exaflex regular(R) with light activated tray resin. In my opinion, adhesive should be dried more than 5 min before impression taking to achieve the greatest tensile bond strength.


MeSH Terms

Adhesives
Rubber*
Silicones
Adhesives
Rubber
Silicones
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