Addition of Silver-Zinc-Potassium Polyacrylate into Polymethyl-methacrylate Dentures

Authors

  • Yas Mohammed Musadaq
  • Abdulrahman Taha Elbaram
  • Hassan T.S. Shatub
  • Rihab Amer Kareem Department of Prosthodontics/ College of Dentistry/ Ibn Sina University/ Iraq.
  • Ahmed Ghaith Ahmed

DOI:

https://doi.org/10.5195/d3000.2026.1446

Keywords:

Prosthodontics, Antimicrobial, Composite

Abstract

The study was undertaken to assess the effect of addition of a silver–zinc–potassium polyacrylate (Ag–Zn–KPA) composite filler to PMMA denture base materials on their mechanical properties, antimicrobial activity and water sorption behavior. Specimens of PMMA were modified with different concentrations (0%, 1%, 2.5% and 5 wt%) of Ag–Zn–KPA composite. Flexural strength, impact resistance, surface hardness and water sorption tests according to ISO 20795-1 standards were performed for mechanical performance characterization. Antimicrobial activity was assessed by colony-forming unit (CFU) counts and inhibition zone against Candida albicans and Streptococcus mutans. Statistical comparisons were conducted with one-way ANOVA and Tukey post-hoc tests (α = 0.05). The incorporation of Ag–Zn–KPA exhibited significantly higher flexural strength and surface.hardness and higher antibacterial activity than PMMA resin (p < 0.05). The 2.5 wt% formulation provided the best combination of enhanced mechanical performance with controlled water sorption. The Ag–Zn–KPA-modi fi ed PMMA revealed a promising multifunctionality, showing mechanical durability, antimicrobial resistance and functional water retention. This composite system could represent an interesting and potentially clinically relevant improvement of denture base materials.

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Published

2026-07-22

Issue

Vol. 14 No. 2 (2026)

Section

Infancy & Adolescence

License

Copyright (c) 2026 Yas Mohammed Musadaq, Abdulrahman Taha Elbaram, Hassan T.S. Shatub, Rihab Amer Kareem, Ahmed Ghaith Ahmed

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