Journal article
Flexural strength of provisional crown and fixed partial denture resins
The Journal of prosthetic dentistry, Vol.87(2), pp.225-228
02/2002
DOI: 10.1067/mpr.2002.121406
PMID: 11854681
Abstract
Provisional prostheses are subject to flexure under function. Selection of the appropriate material for their fabrication is difficult given the limited evidence-based information on the flexural strength of provisional resins.
This study compared the flexural strength of 5 methacrylate-based resins and 8 bis-acryl resins used to fabricate provisional crowns and fixed partial dentures.
Bar-type specimens were fabricated according to American National Standards Institute/American Dental Association specification 27. After being immersed in artificial saliva at 37 degrees C for 10 days, the specimens were fractured under 3-point loading in a universal testing machine at a crosshead speed of 0.75 mm/min. Maximal loads to fracture in Newtons were recorded. Mean flexural strengths were calculated in MPa (n = 10 per group). Comparisons were made with analysis of variance and Duncan's multiple range test (P<.05).
Mean flexural strengths ranged from 56.2 to 123.6 MPa. There were 4 statistically similar groups. The group with the highest strengths consisted of 4 bis-acryl materials (Provipont, Integrity, Protemp 3 Garant, and Luxatemp).
Within the limitations of this study, flexural strengths were material- rather than category-specific. Some, but not all, bis-acryl resins demonstrated significantly superior flexural strength over traditional methacrylate resins.
Details
- Title: Subtitle
- Flexural strength of provisional crown and fixed partial denture resins
- Creators
- Debra R Haselton - University of IowaAna M Diaz-Arnold - University of IowaMarcos A Vargas - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Journal of prosthetic dentistry, Vol.87(2), pp.225-228
- DOI
- 10.1067/mpr.2002.121406
- PMID
- 11854681
- ISSN
- 0022-3913
- eISSN
- 1097-6841
- Language
- English
- Date published
- 02/2002
- Academic Unit
- Family Dentistry
- Record Identifier
- 9984367629002771
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