Effect of Copper Oxide Nanoparticles Incorporation on the Mechanical and Surface Properties of Heat Polymerized Denture Base Resin: An In Vitro Study.

Document Type : Original Article

Author

Assistant Professor of Prosthodontics, Oral and Maxillofacial Prosthodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

Abstract

Purpose: This study aimed to examine the flexural strength, surface roughness, and surface hardness of heat polymerized denture base material incorporated with copper oxide (CuO) nanoparticles.

Materials and Methods: Forty heat polymerized acrylic resin specimens with the dimensions of (65x10 x 2.5mm) were prepared according to the manufacturer’s instructions. The specimens were divided into four groups (n=10 each). Unmodified denture base material is the control group, the other groups were incorporated with 1%, 3%, and 5% CuO nanoparticles to the heat polymerized acrylic resin powder. The Universal Testing Machine was used to measure the flexural strength. A non-contact optical profilometer was used for surface roughness testing, and a Vickers digital testing machine to measure the surface hardness. One-way ANOVA test followed by Tukey’s post-hoc test was used to compare different groups.

Results: A statistical difference was found between the nanoparticle-added groups and the control group regarding flexural strength. The highest mean value was observed for the 1% nano-CuO group. The surface hardness was significantly increased as compared to the control group. The surface roughness was not significantly altered except for the 5 % concentration.

Conclusion: Within the limitations of this study, it was concluded that the incorporation of CuO nanoparticles to heat polymerized denture base resin improved flexural strength. The highest strength was with the 1% concentration of the nanoparticles. The CuO nanoparticles addition also improved the surface hardness and did not affect the surface roughness in concentrations below 5%.

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Egyptian Dental Journal
Volume 70, Issue 2 - Serial Number 4
Fixed Prosthodontics, Removable Prosthodontics and Dental Materials
April 2024
Pages 1557-1565

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