Residual shrinkage stress distributions in molars after composite restoration

Antheunis Versluis, Daranee Tantbirojn, M R Pintado, Ralph DeLong, William H Douglas

Research output: Contribution to journalArticlepeer-review

146 Scopus citations

Abstract

The residual shrinkage stress distributions associated with various tooth deformations were validated and calculated after the restoration of composites. A polymerization model based on the post-gel shrinkage concept was employed to calculate the occlusion deformation pattern and residual stress states of the tooth, restoration and tooth-restoration interface. The results show that the tooth's resistance against polymerization shrinkage decreased with the loss of dental hard tissue. It was concluded that shrinkage stress cannot be based upon composite properties or restoration configuration alone, but should be considered as a distributed pattern.

Original languageEnglish (US)
Pages (from-to)554-564
Number of pages11
JournalDental Materials
Volume20
Issue number6
DOIs
StatePublished - Jul 1 2004

Keywords

  • Composite restoration
  • Deformation
  • Microhardness
  • Polymerization shrinkage
  • Post-gel shrinkage
  • Residual stress
  • Restorative composite
  • Shrinkage stress
  • Strain gauge

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