A pilot study on the influence of two reinforcing materials (glass fibre mesh and electro-spun nylon nano fibres) on the flexural strength of a heat-cured poly (methyl methacrylate) denture base resin

摘要

Objective: To determine the effect of a methacrylic pre-impregnated resin giass fibre mesh and electro-spun nylon nano fibres on the flexural strength of a heat-cured poly (methyl methacrylate) (PMMA) denture base resin. Methods; A non-reinforced PMMA control group (Vertex?) and two reinforced groups, incorporating glass fibre mesh (Quartz Splint?) and electro-spun nylon nano fibres (Xantu. Layr?) were made according to ISO 20795-1:2013, Flexural strength was measured using a 3-point bend test in a universal testing machine. Statistical analysis was initially done using one-way ANOVA followed by a post-hoc Tukey HSD test (P>0.05) to determine the variance between groups. Results; The PMMA glass fibre mesh reinforced group had a statistically higher mean flexural strength (99.4MPa) compared to the non-reinforced PMMA control (88.5MPa). There was no significant difference between the PMMA nylon nano fibre reinforced group (92,4MPa) and the non-reinforced PMMA control. Conclusions: PMMA denture base resin flexural strength is improved by incorporating the glass fibre mesh, while electro-spun nylon nano fibres produced no significant increase in the flexural strength.