Experimental validation of a finite element model of light-activated polymerization shrinkage

Mark M. Winkler, Jie Chen, Haihong Qian, David W. Hamula, Timothy J. Carlson, Thomas R. Katona

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

An important consideration in improving the longevity of dental resin composite restorations is how to minimize the stresses that develop between resin composites and the wall of the preparation as the resin shrinks during polymerization. If the stress is too great, failure of the bonded interface occurs and microleakage results, with possible margin failure, staining, and secondary caries. This present project was performed to validate a previously developed FEM approach for investigating polymerization shrinkage. Light-cured resin composite was condensed into a cylindrical cavity preparation, which contained a centrally located wire. A profilometer stylus was positioned on the end of the wire to detect the initial surface displacement as the wire moved with the superficial layer of composite resin. The plots of the experimentally derived data were compared to the data plot from the FEM. The initial segments of the experimental plots matched the calculated plot very closely in shape, thus validating the FEM approach. (C) 2000 John Wiley and Sons, Inc.

Original languageEnglish (US)
Pages (from-to)554-559
Number of pages6
JournalJournal of Biomedical Materials Research
Volume53
Issue number5
DOIs
StatePublished - Oct 16 2000

Keywords

  • Dental resin
  • Dental stress analysis
  • Finite element
  • Polymerization shrinkage
  • Resin composite

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

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