sažetak izlaganja sa skupa
To investigate the tensile bond strength between additive manufactured denture base materials and soft denture liners and to determine the type of failure. Three denture base
materials were used in this study: two additive manufactured and one heat polymerized as a control group. Two soft denture liners were used, one acrylate based and one silicone based. Tensile bond strength test was performed according to the ISO No. 10139-2:2016 specification and the type of failure was observed. Kruskal–Wallis test with Dunn’s post hoc test was used to analyse the values of tensile bond strength, and Fisher’s exact test was used to analyse the type of failure. P-values ˂ 0.05 were considered statistically significant. The tensile bond strength between acrylate based soft denture liner and additive manufactured denture base materials was lower than in the control group, but not statistically significant (p > 0.05). Tensile bond strength between silicone based denture liner and additive manufactured denture base materials was statistically significantly lower than in the control group (p < 0.05). The type of failure between acrylate based soft liner and heat cured denture base material was predominantly cohesive, while between the two additive manufactured denture base materials and acrylate base soft liner was predominantly adhesive. The type of failure between heat cured material and silicone based material was predominantly cohesive. The type of failure between additive manufactured denture base material and silicone based soft liner was also predominantly cohesive. Compared with heat cured denture base material, additive manufactured denture base materials showed lower values of adhesive tensile strength for both acrylic and silicone based soft denture liners.
soft denture liner ; denture base ; additive manufacturing
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