The effects of reinforcement with nanoparticles of polyetheretherketone, zirconium oxide and its mixture on flexural strength of PMMA resin

Authors : Deepali BARAPATRE, Surabhi SOMKUWAR, Sunil MİSHRA, Ramesh CHOWDHARY

Pages : 61-66

Doi:10.26650/eor.2022904564

View : 11 | Download : 6

Publication Date : 2022-05-27

Article Type : Research Paper

Abstract :Purpose: Polymethylmethacrylate denture bases are prone to fracture, so reinforcement of dentures with nanoparticles is required to overcome these challenges. This in-vitro study was done to assess the effect of reinforcement with nanoparticles of polyetheretherketone insert ignore into journalissuearticles values(PEEK);, zirconium oxide insert ignore into journalissuearticles values(ZrO2); and its mixture on flexural strength of polymethylmeythacrylate resin. Material and methods: A total of 60 acrylic resin specimens measuring 65 mm × 10 mm × 2.5 mm were fabricated. The specimens were divided in to fifteen specimens in each group [control group insert ignore into journalissuearticles values(C);, 3wt% PEEK group insert ignore into journalissuearticles values(P);, 3wt% zirconia group insert ignore into journalissuearticles values(Z);, and hybrid reinforcement of 1.5wt% PEEK and 1.5wt% ZrO2 group insert ignore into journalissuearticles values(P-Z);]. The flexural strength of the specimens was evaluated using a three-point bending test on a universal testing machine. The statistical analysis was done using one-way analysis of variance insert ignore into journalissuearticles values(ANOVA);, and the intergroup comparison was done using Tukey’s post hoc analysis. Results: The mean flexural strength was maximum in group P-Z insert ignore into journalissuearticles values(98.73MPa); followed by group P insert ignore into journalissuearticles values(86.22 MPa); and group Z insert ignore into journalissuearticles values(84.48 MPa);. The mean flexural strength was least in the control group insert ignore into journalissuearticles values(74.11MPa);. One-way ANOVA revealed a highly significant insert ignore into journalissuearticles values(P<0.01); difference among the groups. Pairwise comparison among groups showed a significant difference insert ignore into journalissuearticles values(P<0.05); among all the groups except in between groups P and Z where no significant difference was found insert ignore into journalissuearticles values(P=0.406);. Conclusion: Hybrid reinforced PEEK and zirconia could be used as an effective reinforcement material for denture base resin. The hybrid PEEK and zirconia reinforced resin can be an alternative treatment option in patients with heavy occlusal forces and for patients who have previous experience of multiple denture fractures.
Keywords : flexural strength, nanoparticles, polymethylmethacrylate, polyetheretherketone, zirconia