Abstract | OBJECTIVES: This in vitro study was conducted to investigate the fatigue behavior of several dental restoratives, including composites, glass ionomers and a resin-reinforced glass ionomer. METHODS:
Fatigue was imposed under a reverse stress-controlled regimen, following a staircase approach. Samples were stored and tested under both dry and wet conditions. The following parameters were measured and analyzed: Young's modulus, restrained fracture strength, and flexural fatigue limit. RESULTS: As a general trend, all products showed a decrease in Young's modulus following water sorption. For all products except the resin-reinforced glass ionomer, the same trend was seen in the restrained fracture strength. This is, however, no longer valid for the flexural fatigue limit: the trend is steady-state for the glass ionomers, status quo for the resin-reinforced glass ionomer, and all composites tested show a decrease. SIGNIFICANCE: The diversity in structure of both composites and glass ionomers does not allow findings for one product to be extrapolated to other similar products.
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Authors | M J Braem, P Lambrechts, S Gladys, G Vanherle |
Journal | Dental materials : official publication of the Academy of Dental Materials
(Dent Mater)
Vol. 11
Issue 2
Pg. 137-41
(Mar 1995)
ISSN: 0109-5641 [Print] England |
PMID | 8621035
(Publication Type: Comparative Study, Journal Article)
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Chemical References |
- Charisma composite resin
- Compomers
- Composite Resins
- Dyract
- Fuji II LC cement
- Glass Ionomer Cements
- Methacrylates
- Resin Cements
- Resins, Synthetic
- Silicates
- Vitremer
- Z100 composite resin
- Water
- Herculite XR
- P50 composite resin
- Silux Plus
- Bisphenol A-Glycidyl Methacrylate
- Silicon Dioxide
- Zirconium
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Topics |
- Bisphenol A-Glycidyl Methacrylate
(chemistry)
- Compomers
- Composite Resins
(chemistry)
- Dental Stress Analysis
- Elasticity
- Glass Ionomer Cements
(chemistry)
- Materials Testing
- Methacrylates
(chemistry)
- Pliability
- Resin Cements
- Resins, Synthetic
(chemistry)
- Silicates
(chemistry)
- Silicon Dioxide
(chemistry)
- Water
(chemistry)
- Zirconium
(chemistry)
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