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Purpose: The aim of this study was to evaluate the interfacial bond strength between
different types of silicone facial elastomers and denture resins. Materials and Methods:
The facial materials studied were Cosmesil and Ideal, whereas SR 3/60, SR 3/60 Quick,
and Triad were included in the denture resins group. The “overlap-joint” model was used
to evaluate the bond strength, and the samples were placed in tension until failure. The
bonding surfaces were treated with a primer. Ten samples for each silicone/resin group
were tested. The results were subjected to two-way analysis of variance and Tukey’s test
for comparison. Results: The bond strength was affected by the type of silicone elastomer
and denture resin. An interaction between them was also noted. The bond strength
ranged from 0.03 to 0.23 MPa. Conclusion: Cosmesil condensation-type silicone always
showed higher bond strength with the three different types of denture resins compared to
Ideal addition silicone, keeping other variables associated with the silicone-resin bond
fixed.
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