Transverse strength measurements of repaired acrylic resin modified with different surface treatments

Abstract

Aim: the purpose of this study was to evaluate the effect of chemical and mechanical
surface treatments on repaired acrylic resin in terms of transverse strength.
Materials and methods: seventy acrylic specimens were fabricated and divided into
7 groups according to kind of reinforcement materials. Thesespecimenswere cut in
the mid and a space of 3 mm was created. The repair was done with various
surface treatments and specimenswere then subjected to loads till fracture. Data
were analysed and compared via ANOVA and Tukey tests.
Results: the transverse strength of repaired acrylic resin had been influenced by the
type of surface treatment used.The repaired samples withglass fibers,stainless steel
wire and monomerimproved significantly the bond strength than untreated group
(P<0.05).Statistically, there were significant differences between control group
and repaired groups (P<0.05); and among all repaired groups (P<0.05) with
exception no significant differencesbetween fiber and monomer, and wire and
monomer groups (P > 0.05).
Conclusion:A combination of chemical and mechanical treatments has a significant
effect on transverse strengths. The repaired joints with monomer, wire, or glass
fibers had significantly improved the strength of repaired acrylic resin.