Effect of aging on mechanical and antibacterial properties of fluorinated graphene reinforced glass ionomer: In vitro study

This study: 1) aims to test the mechanical and antibacterial properties of fluorinated graphene strengthened glass ionomer materials (FG/GICs); 2) aims to investigate the effects of thermo-cycling on (FG/GICs). Fluorinated graphene (FG) with bright white color was prepared from fluorinated graphite...

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Bibliographic Details
Published in:Journal of the mechanical behavior of biomedical materials 2023-06, Vol.142, p.105803-105803, Article 105803
Main Authors: Arafa, Suzan Khaled, Sherief, Dalia Ibrahim, Nassif, Mohamed Salah
Format: Article
Language:English
Subjects:
Acrylic Resins
Anti-Bacterial Agents - pharmacology
Compressive Strength
Dental Atraumatic Restorative Treatment
Glass Ionomer Cements - pharmacology
Graphite - pharmacology
Humans
Materials Testing
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Summary:This study: 1) aims to test the mechanical and antibacterial properties of fluorinated graphene strengthened glass ionomer materials (FG/GICs); 2) aims to investigate the effects of thermo-cycling on (FG/GICs). Fluorinated graphene (FG) with bright white color was prepared from fluorinated graphite (SIGMA Aldrich), using modified Hummer's method, to be added to conventional glass ionomer cements (GICs). In addition to a control group (group 1), experimentally modified GICs were prepared by adding FG to the conventional glass ionomer powder with three different weight ratios; (group 2, 1 wt %; group 3, 2.5 wt %; and group 4, 5 wt %) using mechanical blending method. Experimental groups of the specimens (n = 240) were divided, for each concentration (n = 120) half of the specimens were subjected to thermo-cycling. Hardness, compressive strength, and antibacterial activity of (FG/GICs) were measured with and without thermo-cycling. Compressive strength was measured by a universal testing machine, hardness was measured using a Vickers micro-hardness tester, and antibacterial effects against staphylococcus aureus and streptococcus mutans were tested by the pellicle sticking method. For statistical analysis, numerical data were explored for normality and variance homogeneity using Shapiro-Wilk and Leven's tests respectively. The prepared (FG/GICs) showed an increase in hardness in group 4 (p 
ISSN:1751-6161
1878-0180
DOI:10.1016/j.jmbbm.2023.105803