Effect of Different Nano-Fillers Addition on The Mechanical Properties of Heat-Polymerized Acrylic Resin | ||||
| Al-Azhar Assiut Dental Journal | ||||
| Article 1, Volume 5, Issue 2, October 2022, Page 141-148 PDF (1.3 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/aadj.2022.267266 | ||||
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| Authors | ||||
Mohamed Aboshama   1; Aly Sayed2; Ahmed Fathey Elhagali1
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| 1Department of Removable Prosthodontics, Faculty of Dental Medicine, Al-Azhar University, Assuit , Egypt. | ||||
| 2Department of dental biomaterials, Faculty of dentistry, Assiut University. Egypt. | ||||
| Abstract | ||||
| Aim: To evaluate flexural strength (FS) and micro-hardness of poly(methylmethacrylate) (PMMA) denture base material modified with Zirconium oxide (ZrO2), titanium oxide (TiO2) and zinc oxide (ZnO) nanoparticles powder with different concentration (1.5, 3 and 5% ) Subjects and Methods: Test specimens of PMMA of dimensions (65 ×10 × 2.5 mm) were made from heat-cured acrylic resin served as control group Another nine group were made of PMMA containing 1.5, 3, and 5% (w/w) (ZrO2), (TiO2) and (ZnO) nanoparticles. Two types of mechanical tests were performed on the samples: flexural strength and hardness. Results: Statistical analysis results revealed that non-significant increase in flexural strength of heat cured reinforced with ZrO2 Nps and ZnO Nps for all concentrations. While adding 1.5% and 5% of TiO2 Nps showed significant increase in flexural strength but 3% showed significant decrease values. Results revealed that non-significant decrease in hardness of heat cured reinforced with ZrO2 Nps ,TiO2 Nps, and ZnO Nps for all concentrations except 3% of heat cured reinforced with TiO2 Nps which showed non-significant increase in hardness. Conclusions: It was discovered that adding of 1.5and 5% Tio2 Nps to the used denture base materials would improve the flexural strength of the denture base materials. Also, adding 1.5, 3 and 5 % ZrO2, Tio2, and ZnO Nps reduces the microhardness. | ||||
| Keywords | ||||
| Flexural strengths; micro-hardness; Zirconium oxide; Titanium oxide and zinc oxide nanoparticles; heat-polymerized acrylic resin | ||||
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