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- Title
Influence of Addition of Different Nanoparticles on the Surface Properties of Poly(methylmethacrylate) Denture Base Material.
- Authors
Gad, Mohammed M.; Abualsaud, Reem; Al‐Thobity, Ahmad M.; Baba, Nadim Z.; Al‐Harbi, Fahad A.
- Abstract
Purpose: To evaluate and compare the surface properties (roughness and hardness) of poly(methylmethacrylate) denture base material modified with zirconium dioxide (ZNPs), silicon dioxide (SNPs), and diamond (DNPs) nanoparticles. Materials and methods: Two hundred sixty heat‐polymerized acrylic resin disks (15 × 2 mm) were prepared. ZNPs, SNPs, and DNPs were added in concentrations of 0%, 0.5%, 1.0%, 2.5%, and 5.0% by weight of acrylic powder. This yielded a total of 13 groups for each test according to filler type and concentration (n = 10/group). The control group was made of pure acrylic. A mechanical polisher was used to standardize specimens' surfaces before testing. A profilometer and Vickers hardness indenter were used to test the surface roughness and hardness, respectively. ANOVA and Tukey post hoc tests were used for data analysis (α = 0.05). Results: In comparison to control, results showed a nonsignificant increase in surface roughness (Ra) of acrylic material after the addition of 0.5% nanoparticles (ZNPs p = 0.168, SNPs p = 0.166, and DNPs p = 0.177), while a significant increase was seen with all other concentrations (p ˂ 0.05). Ra values of ZNP and DNP groups were significantly higher than those of the SNPs group (p < 0.001). The addition of any of the fillers to acrylic denture base materials significantly increased the hardness (p ˂ 0.05), with ZNPs and DNPs having values lower than those of the SNPs group (p < 0.001). Conclusions: Although nanofiller addition increased the hardness of denture base material, Ra was adversely affected when the concentration exceeded 0.5%. Therefore, 0.5% is suggested to be the most appropriate ratio to improve hardness with acceptable Ra.
- Subjects
SURFACE properties; DENTURES; VICKERS hardness; ZIRCONIUM oxide; SURFACE roughness
- Publication
Journal of Prosthodontics, 2020, Vol 29, Issue 5, p422
- ISSN
1059-941X
- Publication type
Article
- DOI
10.1111/jopr.13168