In vitro mechanical property comparison of four resins used for fabrication of provisional fixed restorations.

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.

• 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)

Chemical References

• Acrylic Resins
• Methylmethacrylates
• Provipont system
• Water
• Triad resin
• Jet, dental resin
• Bisphenol A-Glycidyl Methacrylate
• Polymethyl Methacrylate

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