Weibull models of fracture strengths and fatigue behavior of dental resins in flexure and shear
1998; Wiley; Volume: 43; Issue: 3 Linguagem: Inglês
10.1002/(sici)1097-4636(199823)43
ISSN1097-4636
AutoresGeorge R. Baran, John I. McCool, D. K. Paul, Ken Boberick, Stephanie L. Wunder,
Tópico(s)Ultrasonics and Acoustic Wave Propagation
ResumoJournal of Biomedical Materials ResearchVolume 43, Issue 3 p. 226-233 Research Report Weibull models of fracture strengths and fatigue behavior of dental resins in flexure and shear George R. Baran, Corresponding Author George R. Baran GBaran@eniac.dental.temple.edu Temple University School of Dentistry, Philadelphia, PennsylvaniaTemple University School of Dentistry, Philadelphia, PennsylvaniaSearch for more papers by this authorJohn I. McCool, John I. McCool Penn State Great Valley, Malvern, PennsylvaniaSearch for more papers by this authorDavid Paul, David Paul Synthes U.S.A., Malvern, PennsylvaniaSearch for more papers by this authorKen Boberick, Ken Boberick Temple University School of Dentistry, Philadelphia, PennsylvaniaSearch for more papers by this authorStephanie Wunder, Stephanie Wunder Department of Chemistry, Temple University, Philadelphia, PennsylvaniaSearch for more papers by this author George R. Baran, Corresponding Author George R. Baran GBaran@eniac.dental.temple.edu Temple University School of Dentistry, Philadelphia, PennsylvaniaTemple University School of Dentistry, Philadelphia, PennsylvaniaSearch for more papers by this authorJohn I. McCool, John I. McCool Penn State Great Valley, Malvern, PennsylvaniaSearch for more papers by this authorDavid Paul, David Paul Synthes U.S.A., Malvern, PennsylvaniaSearch for more papers by this authorKen Boberick, Ken Boberick Temple University School of Dentistry, Philadelphia, PennsylvaniaSearch for more papers by this authorStephanie Wunder, Stephanie Wunder Department of Chemistry, Temple University, Philadelphia, PennsylvaniaSearch for more papers by this author First published: 31 July 2002 https://doi.org/10.1002/(SICI)1097-4636(199823)43:3 3.0.CO;2-PCitations: 11AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract In estimating lifetimes of dental restorative materials, it is useful to have available data on the fatigue behavior of these materials. Current efforts at estimation include several untested assumptions related to the equivalence of flaw distributions sampled by shear, tensile, and compressive stresses. Environmental influences on material properties are not accounted for, and it is unclear if fatigue limits exist. In this study, the shear and flexural strengths of three resins used as matrices in dental restorative composite materials were characterized by Weibull parameters. It was found that shear strengths were lower than flexural strengths, liquid sorption had a profound effect on characteristic strengths, and the Weibull shape parameter obtained from shear data differed for some materials from that obtained in flexure. In shear and flexural fatigue, a power law relationship applied for up to 250 000 cycles; no fatigue limits were found, and the data thus imply only one flaw population is responsible for failure. Again, liquid sorption adversely affected strength levels in most materials (decreasing shear strengths and flexural strengths by factors of 2–3) and to a greater extent than did the degree of cure or material chemistry. © 1998 John Wiley & Sons, Inc. J Biomed Mater Res (Appl Biomater) 43: 226–233, 1998 Citing Literature Volume43, Issue3Autumn (Fall) 1998Pages 226-233 RelatedInformation
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