Abstract | PURPOSE: This study recorded and compared the flexural elastic moduli and moduli of rupture of four materials ( Provipont DC resin, Triad provisional restorative material, Jet acrylic resin, and a 50:50 mixture of Jet acrylic resin and orthodontic resin) used to make provisional restorations. MATERIAL AND METHODS: Thirty-nine identical 63 x 10 x 3 mm specimens were made from each of the four materials. After 24 hours, 30 days, and 60 days of water storage at 37 degrees C (13 specimens each), standard three-point bend tests were conducted on an Instron universal testing machine at a crosshead speed of 0.5 cm/minute. Stress strain curves were generated, and values for the flexural elastic moduli and moduli of rupture were calculated. Data were subjected to two-way and one-way analyses of variance (alpha = 0.05). RESULTS:
Provipont DC resin exhibited significantly higher flexural elastic moduli and moduli of rupture values at the 24-hour test time. However, Provipont DC resin exhibited the greatest decrease in these values over time.
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Authors | M F Ireland, D L Dixon, L C Breeding, M H Ramp |
Journal | The Journal of prosthetic dentistry
(J Prosthet Dent)
Vol. 80
Issue 2
Pg. 158-62
(Aug 1998)
ISSN: 0022-3913 [Print] United States |
PMID | 9710816
(Publication Type: Comparative Study, Journal Article)
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Chemical References |
- Acrylic Resins
- Methylmethacrylates
- Provipont system
- Water
- Triad resin
- Jet, dental resin
- Bisphenol A-Glycidyl Methacrylate
- Polymethyl Methacrylate
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Topics |
- Acrylic Resins
(chemistry)
- Analysis of Variance
- Bisphenol A-Glycidyl Methacrylate
(chemistry)
- Chemical Phenomena
- Chemistry, Physical
- Dental Stress Analysis
- Denture Bases
- Denture, Partial, Temporary
- Elasticity
- Methylmethacrylates
(chemistry)
- Polymethyl Methacrylate
(chemistry)
- Stress, Mechanical
- Time Factors
- Water
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