Influence of Dental Glass Fibers and Orthopedic Mesh on the Failure Loads of Polymethyl Methacrylate Denture Base Resin

Abstract

The aim of the present study was to evaluate the fracture loads of polymethyl methacrylate (PMMA) complete denture bases reinforced with glass-fiber mesh and orthopedic casting tape (OCT) in comparison to conventional PMMA dentures under artificial aging. Dental fiberglass framework (Group 1) and OCT (Group 2 and 3) reinforced PMMA acrylic dentures were fabricated on the edentulous ridge. Ten PMMA dentures without reinforcement (Group 4) were included as controls. All specimens were placed in a chewing simulator chamber, and fatigue load was applied. To assess the fracture loads, static loads with a universal testing machine were applied. Fractured specimens in each group were evaluated under a scanning electron microscope. The data were statistically analyzed employing analysis of variance and Tukey post-hoc test. The association of denture weight and thickness on fracture load was assessed using Pearson and Spearman correlations. Dental fiberglass (Group 1) displayed the highest fracture load (692.33 ± 751.41 N), and Group 4 (control) exhibited the lowest fracture loads (281.41 ± 302.51 N). Dentures reinforced with fiberglass mesh framework exhibited intact fractures. In contrast, Group 2 and 3 specimens using OCT demonstrated ditching fractures. It was observed that the thickness and weight of all the reinforced specimens influenced the load required to fracture the dentures (p < 0.001). Denture specimens strengthened with OCT (Groups 2 and 3) exhibited failure loads lower than dental fiberglass (Group 1) specimens but higher than unreinforced controls.

Fracture Resistance of Fiber-Reinforced Composite Restorations: A Systematic Review and Meta-Analysis

“…Fiberglass is an inorganic material that varies according to its composition (A, C, D, E, R and S glass), presenting adequate aesthetics, high tensile strength, low thermal conductivity, high corrosion resistance and adequate surface chemistry, which allows its adhesion to the resin-based materials. However, it presents some limitations such as brittleness and low wear resistance [ 13 ]. Polyethylene fibers are constituted of aligned polymer chains with low density modulus, which enables higher impact strength.…”

The effects of nano-silver loaded zirconium phosphate on antibacterial properties, mechanical properties and biosafety of room temperature curing PMMA materials

“…Primarily, the rough surface and porosity of PMMA materials facilitate the colonization of microorganisms, such as Candida albicans, Streptococcus sanguineus, and Streptococcus mutans, thereby propelling the incidence of various oral diseases ( An et al., 2022 ; Moreno-Maldonado et al., 2012 ; Quassem and Mahross, 2018 ; Sahm et al., 2022 ; Pourhajibagher et al., 2023 ; Schubert et al., 2019 ; Al-Dwairi et al., 2019 ; Patil et al., 2020 ; Dantas et al., 2016 ). Moreover, PMMA material exhibits a challenge regarding mechanical strength, proving susceptible to breakage under masticatory pressures ( Zafar, 2020 ; Ali Sabri et al., 2021 ; Alkordy and Alsaadi, 2014 ; Mohd Farid et al., 2022 ; Khan et al., 2022 ; Oleiwi et al., 2019 ; Zafar, 2018 ; Rana et al., 2021 ). Considering the myriad and multifaceted bacteria present in the human oral cavity, alongside the insufficient physical and mechanical strength of PMMA materials, an imperative arises to enhance the antibacterial properties of PMMA materials without compromising their physical and mechanical attribute.…”

Effect of Knitting Pattern of PP Mesh on the Flexural Properties of Heat-cured PMMA Denture Base Resin

“…The most commonly used denture base material for production of removable dentures is heat cured polymethyl methacrylate (PMMA) acrylic resin [1]. Due to its favorable properties such as biocompatibility, superior aesthetic view, low water sorption, ease of modification, capability of being repaired, and ease and simplicity in processing achieved a great success in clinical dentistry [2].…”

“…Orthopedic casting tape (OCT) which is basically formed by a mesh made from glass fibers and a self curing resin surrounding the mesh, has been used for fracture management of long bones and provides excellent outcomes of immobilization and rigid support in the field of orthopedics. However, their potential in denture reinforcement still needs to be investigated [1]. From the available indexed literature, it was observed that inadequate data is available about the mechanical properties of complete dentures reinforced using glassfiber mesh.…”