Alshahrani, Faris A; Gad, Mohammed M; Al-Thobity, Ahmad M; Akhtar, Sultan; Kashkari, Afnan; Alzoubi, Fawaz; Yilmaz, Burak (2023). Effect of treated zirconium dioxide nanoparticles on the flexural properties of autopolymerized resin for interim fixed restorations: An in vitro study. The journal of prosthetic dentistry, 130(2), pp. 257-264. Elsevier 10.1016/j.prosdent.2021.09.031
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STATEMENT OF PROBLEM
Fractures of interim fixed restorations are a common complication. The autopolymerized polymethyl methacrylate resin materials used for interim fixed restorations have limited mechanical properties, but whether adding treated zirconium dioxide nanoparticles improves mechanical properties is unclear.
PURPOSE
The purpose of this in vitro study was to evaluate the effect of treated zirconium dioxide nanoparticles on the flexural strength and elastic modulus of autopolymerized polymethyl methacrylate resin.
MATERIAL AND METHODS
A split-metal mold (60×10×3.3 mm) was used to fabricate 40 autopolymerized acrylic resin specimens. The specimens were divided into 4 groups (n=10) according to zirconium dioxide nanoparticle concentration: control (unmodified resin) and zirconium dioxide nanoparticle contents of 1, 2.5, and 5 wt%. The specimens were mixed and polymerized according to the manufacturer's instructions and stored in distilled water for 48 ±2 hours at 37 °C. The flexural strength and elastic modulus were evaluated based on the 3-point bend test where data were analyzed by using 1-way analysis of variance and Tukey post hoc tests (α=.05).
RESULTS
The flexural strength of the 1-wt% zirconium dioxide nanoparticle specimens was significantly higher than that of the control group (P<.001) but did not significantly increase further with the higher nanoparticle content (P>.05). Elastic modulus significantly decreased with 2.5-wt% zirconium dioxide nanoparticles (P=.019), while no significant changes were found with other test groups (P>.05).
CONCLUSIONS
The addition of treated zirconium dioxide nanoparticles at low concentrations increased the flexural strength of autopolymerized polymethyl methacrylate resins used in fixed interim restorations.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology 04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry |
UniBE Contributor: |
Yilmaz, Burak |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1097-6841 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Lena Augé |
Date Deposited: |
09 Dec 2021 12:25 |
Last Modified: |
29 Aug 2023 00:11 |
Publisher DOI: |
10.1016/j.prosdent.2021.09.031 |
PubMed ID: |
34799082 |
BORIS DOI: |
10.48350/161763 |
URI: |
https://boris.unibe.ch/id/eprint/161763 |