ArticleCureus2026
Influence of Silver Nanoparticle Incorporation on the Flexural Strength and Color Stability of Heat-Polymerized Polymethyl Methacrylate (PMMA) Denture Base Resin: An In Vitro Study.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Background Polymethyl methacrylate (PMMA) remains the predominant choice for denture base fabrication, primarily due to its superior aesthetic characteristics, excellent biocompatibility with oral tissues, and straightforward processing techniques. However, its relatively low flexural strength and susceptibility to discoloration remain major clinical concerns. Silver nanoparticles (AgNPs), owing to their antimicrobial properties, have been investigated as reinforcing agents, although their influence on the mechanical and optical properties of PMMA remains inconclusive. This study evaluated the effect of different concentrations of AgNPs on the flexural strength and color stability of two heat-polymerized PMMA denture base resins. Methods Two commercially available heat-polymerized denture base resins were utilized to prepare 240 standardized PMMA specimens (DPI Heat Cure Denture Base Resin (Dental Products of India Ltd., Mumbai, India) and Pyrax Heat Cure Denture Base Acrylic Resin (Pyrax Polymars, Roorkee, India)). Each resin was divided into four groups: control, 0.5 wt%, 1 wt%, and 2 wt% AgNP incorporation (n = 30/group). Each subgroup comprised 15 specimens for flexural strength testing and 15 for color stability evaluation. Flexural strength was tested using a three-point bending method, and color stability was evaluated with a spectrophotometer (Commission Internationale de l'Éclairage (CIE) L
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