The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite
The wear of acrylic denture teeth is a serious problem that can change the vertical dimensions of dentures. This study evaluates the effect of adding salinized nano ZrO<sub>2</sub> particles on the microstructure, hardness, and wear resistance of acrylic denture teeth. Heat polymerizing...
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MDPI AG
2022-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/2/302 |
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| author | Kawkb M. El-Tamimi Dalia A. Bayoumi Mohamed M. Z. Ahmed Ibrahim Albaijan Mohammed E. El-Sayed |
| author_facet | Kawkb M. El-Tamimi Dalia A. Bayoumi Mohamed M. Z. Ahmed Ibrahim Albaijan Mohammed E. El-Sayed |
| author_sort | Kawkb M. El-Tamimi |
| collection | DOAJ |
| description | The wear of acrylic denture teeth is a serious problem that can change the vertical dimensions of dentures. This study evaluates the effect of adding salinized nano ZrO<sub>2</sub> particles on the microstructure, hardness, and wear resistance of acrylic denture teeth. Heat polymerizing polymethyl methacrylate resin was mixed with salinized ZrO<sub>2</sub> at concentrations of 5 wt.% and 10 wt.%. Acrylic resin specimens without filler addition were used as a control group. SEM/EDS analyses were performed and the Vickers’ hardness was evaluated. Two-body wear testing was performed using a chewing simulator with a human enamel antagonist. After subjecting the samples to 37,500 cycles, both height loss and weight loss were used to evaluate the wear behavior. The microstructural investigation of the reinforced-denture teeth indicates sound nanocomposite preparation using the applied regime without porosity or macro defects. The addition of zirconium oxide nanofillers to PMMA at both 5% and 10% increased the microhardness, with values of up to 49.7 HV. The wear mechanism in the acrylic base material without nanoparticle addition was found to be fatigue wear; a high density of microcracks were found. The addition of 5 wt.% ZrO<sub>2</sub> improved the wear resistance. Increasing the nanoparticles to 10 wt.% ZrO<sub>2</sub> further improved the wear resistance, with no microcracks found. |
| first_indexed | 2024-03-10T00:40:13Z |
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| id | doaj.art-570edd940533429287c0c79547cfb5d0 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T00:40:13Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-570edd940533429287c0c79547cfb5d02023-11-23T15:09:17ZengMDPI AGPolymers2073-43602022-01-0114230210.3390/polym14020302The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth NanocompositeKawkb M. El-Tamimi0Dalia A. Bayoumi1Mohamed M. Z. Ahmed2Ibrahim Albaijan3Mohammed E. El-Sayed4Department of Removable Prosthodontics, Faculty of Dentistry, Suez Canal University, Ismailia 41522, EgyptDepartment of Dental Biomaterials, Faculty of Dentistry, Suez Canal University, Ismailia 41522, EgyptMechanical Engineering Department, College of Engineering at Al Kharj, Prince Sattam Bin Abdulaziz University, Al Kharj 16273, Saudi ArabiaMechanical Engineering Department, College of Engineering at Al Kharj, Prince Sattam Bin Abdulaziz University, Al Kharj 16273, Saudi ArabiaDepartment of Removable Prosthodontics, Faculty of Dentistry, Suez Canal University, Ismailia 41522, EgyptThe wear of acrylic denture teeth is a serious problem that can change the vertical dimensions of dentures. This study evaluates the effect of adding salinized nano ZrO<sub>2</sub> particles on the microstructure, hardness, and wear resistance of acrylic denture teeth. Heat polymerizing polymethyl methacrylate resin was mixed with salinized ZrO<sub>2</sub> at concentrations of 5 wt.% and 10 wt.%. Acrylic resin specimens without filler addition were used as a control group. SEM/EDS analyses were performed and the Vickers’ hardness was evaluated. Two-body wear testing was performed using a chewing simulator with a human enamel antagonist. After subjecting the samples to 37,500 cycles, both height loss and weight loss were used to evaluate the wear behavior. The microstructural investigation of the reinforced-denture teeth indicates sound nanocomposite preparation using the applied regime without porosity or macro defects. The addition of zirconium oxide nanofillers to PMMA at both 5% and 10% increased the microhardness, with values of up to 49.7 HV. The wear mechanism in the acrylic base material without nanoparticle addition was found to be fatigue wear; a high density of microcracks were found. The addition of 5 wt.% ZrO<sub>2</sub> improved the wear resistance. Increasing the nanoparticles to 10 wt.% ZrO<sub>2</sub> further improved the wear resistance, with no microcracks found.https://www.mdpi.com/2073-4360/14/2/302nanocompositeacrylic denture teethnano ZrO<sub>2</sub> particleswear behaviormicrostructuremicrohardness |
| spellingShingle | Kawkb M. El-Tamimi Dalia A. Bayoumi Mohamed M. Z. Ahmed Ibrahim Albaijan Mohammed E. El-Sayed The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite Polymers nanocomposite acrylic denture teeth nano ZrO<sub>2</sub> particles wear behavior microstructure microhardness |
| title | The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite |
| title_full | The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite |
| title_fullStr | The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite |
| title_full_unstemmed | The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite |
| title_short | The Effect of Salinized Nano ZrO<sub>2</sub> Particles on the Microstructure, Hardness, and Wear Behavior of Acrylic Denture Tooth Nanocomposite |
| title_sort | effect of salinized nano zro sub 2 sub particles on the microstructure hardness and wear behavior of acrylic denture tooth nanocomposite |
| topic | nanocomposite acrylic denture teeth nano ZrO<sub>2</sub> particles wear behavior microstructure microhardness |
| url | https://www.mdpi.com/2073-4360/14/2/302 |
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