Transverse and Impact Strength of Poly Methyl Methacrylate-Zirconium Oxide Nanocomposite Denture Base Material

Al-Flayeh, Yazan Hussam Al-Deen; Al-Noori, Ammar Khalid

doi:10.33899/rdenj.2023.131404.1134

	Transverse and Impact Strength of Poly Methyl Methacrylate-Zirconium Oxide Nanocomposite Denture Base Material
Al-Rafidain Dental Journal
Volume 23, Issue 2, September 2023, Pages 388-396 PDF (1.27 M)
Document Type: Research Paper
DOI: 10.33899/rdenj.2023.131404.1134
Authors
Yazan Hussam Al-Deen Al-Flayeh^* ¹; Ammar Khalid Al-Noori^* ²
¹Ministry of Health, Nineveh Health Directorate
²Department of Prosthodontic, Mosul University, Dentistry College, Mosul, Iraq
Abstract
Aims: this study aims to evaluate the effect of adding two concentrations of zirconium oxide nanoparticles (1.0% and 2.0%) to "heat-cured PMMA" in order to improve its mechanical properties such as transverse strength and impact strength. Materials and Methods: The particle size of Zirconium Oxide ZrO₂ was 20nm. The ZrO₂ nanoparticles were added to the "heat-cured PMMA" resin base at 1.0% and 2.0% by weight, respectively, to create a PMMA-ZrO₂ nanocomposite with two various percentages compared to PMMA without additives. For the transverse strength and impact strength tests, the traditional heat-curing technique was cured with a water bath to polymerize the specimens. The results of the study were statistically analyzed by using one-way ANOVA and Duncan's multiple range test with a significant P-value of 0.05. Results: The results showed that there was an increase in the transversal and impact strength for the PMMA-ZrO₂ nanocomposite at concentrations of 1.0% and 2.0% respectively, after comparison of the findings at 0.05. Conclusions: The use of Zirconium Oxide nanoparticles as dental fillers at 1% and 2% by weight improved the transverse strength and impact strength of PMMA denture base material.
Keywords
transverse strength,,; ,،,؛impact strength,,; ,،,؛ZrO2 nanoparticles

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