Evaluation of the Impact of Nanoparticle Additives on the Shear Bond Strength between Soft Liners and Acrylic

Objectives: The study aimed to evaluate the antifungal properties of incorporating two types of nanoparticles into the denture soft lining material, and shear bond strength between the reinforced soft liner and acrylic resin. Materials and Methods: Ninety specimens were fabricated and grouped into three distinct groups named group A which is the control, group B involved cerium oxide nanoparticles infused soft liner, and group C involved zinc oxide nanoparticles infused soft liner specimens. Specimens for shear bond strength consist of two acrylic parts and one soft liner part occupying the space between the acrylic specimens. Antifungal properties were tested by counting the number of viable cells visually, and shear bond strength was tested using a universal testing machine at speed of 0.5 mm per minute. Statistical tests involved one-way ANOVA and post hoc tests at P ≤ 0.05. Results: Cerium oxide nanoparticles infused specimens revealed higher antifungal properties compared to zinc oxide infused specimens and control specimens. Also, higher shear bond strengths (0.419) followed by those infused with zinc oxide nanoparticles (0.342), while the lowest values were for the control group (0.305). Conclusions: The observed enhancements in antifungal and mechanical properties resulting from cerium oxide and zinc oxide nanoparticles infusions underscore their considerable potential as effective additives for improving performance in various applications.