Effect of Different Curing Methods on Tensile bond Strength Soft Acrylic Liner to Heat-Cured Acrylic Resin

Aims: To evaluate the effect of different curing methods on tensile bond strength between soft acrylic liner and heat cured acrylic resin denture base. Materials and methods: Twenty four specimens were prepared form Vertex heat cured acrylic resin and divided into four groups: cured by water bath ,treated by monomer and cured by water bath ,cured by domestic microwave oven and treated by monomer and the last group cured by domestic microwave oven at same setting. Instron tensile testing machine was used for tensile bond strength test . Results: There is a significant differences between tensile bond strength of tested groups (p=0.001) for the different curing methods. Conclusions: The curing of soft acrylic liner by water bath had better tensile bond strength compared to microwave curing.