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http://dx.doi.org/10.7234/composres.2015.28.1.006

Behavior of Polymerization Shrinkage Stress of Methacrylate-based Composite and Silorane-based Composite during Dental Restoration  

Park, Jung-Hoon (Department of Mechanical Engineering, Graduate School, Hanyang University)
Choi, Nak-Sam (Department of Mechanical Engineering, Hanyang University)
Publication Information
Composites Research / v.28, no.1, 2015 , pp. 6-14 More about this Journal
Abstract
Polymerization shrinkage stress analysis of dimethacrylate-based composite (Clearfil AP-X, Kuraray) and silorane-based composite (Filtek P90, 3M ESPE) used for dental composite restorations was performed using strain-gage measurement and FEM analysis. A theoretical equation based on Young's modulus and polymerization shrinkage of the composite resin was proposed to predict the polymerization shrinkage stress. Experimental results showed that the maximum shrinkage stress of Clearfil AP-X was about 2.8 times higher than Filtek P90. FEM analysis agreed with such experimental stress behaviours and showed that the maximum Von-Mises stress appeared near the margin of the filled resin adhered with PMMA ring. The stress concentration at the interface on the specimen surface was higher than that in the interior. The maximum error of shrinkage stress by the theoretical equation was reasonable within 5% in comparison to FEM results under plane stress.
Keywords
Dental restoration; Methacrylate-based composite resin; Silorane-based composite resin; Polymerization Shrinkage; Strain-gage method; Finite element method;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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