The effects of different denture cleaners on the physical and mechanical properties of heat-cured denture base resin / 实用口腔医学杂志

ABSTRACT

Objective:To evaluate the effects of different denture cleansers on the physical and mechanical properties of heat-cured denture base resin.Methods:Heat-curing denture base resin samples were prepared and respectively immersed in Polident,Stera-dent,0.5% sodium hypochlorite solution and distilled water for 60 h.The flexural strength and elastic modulus were measured(n =10)using 3-point bending test in a universal testing machine.A surface analyzer was used to measure the surface roughness of each specimen(n =10).Results:There were no significant differences of flexural strength and elastic modulus among Polident,Steradent and distilled water(P >0.05).The 0.5% sodium hypochlorite treatment produced lower flexural strength and elastic modulus than the other cleaners(P 0.05).Conclusion:Both Poli-dent and Steradent don't affect the physical and mechanical properties of the heat-cured acrylic resin.0.5% sodium hypochlorite solu-tion doesn't affect the surface roughness,but decreases the flexural strength and elastic modulus of the resin.