Polymerization shrinkage stress of composite resins and resin cements - What do we need to know?

Carlos José Soares, André Luis Faria-E-Silva, Monise de Paula Rodrigues, Andomar Bruno Fernandes Vilela, Carmem Silvia Pfeifer, Daranee Tantbirojn, Antheunis Versluis

Research output: Contribution to journalReview article

28 Scopus citations

Abstract

Polymerization shrinkage stress of resin-based materials have been related to several unwanted clinical consequences, such as enamel crack propagation, cusp deflection, marginal and internal gaps, and decreased bond strength. Despite the absence of strong evidence relating polymerization shrinkage to secondary caries or fracture of posterior teeth, shrinkage stress has been associated with postoperative sensitivity and marginal stain. The latter is often erroneously used as a criterion for replacement of composite restorations. Therefore, an indirect correlation can emerge between shrinkage stress and the longevity of composite restorations or resin-bonded ceramic restorations. The relationship between shrinkage and stress can be best studied in laboratory experiments and a combination of various methodologies. The objective of this review article is to discuss the concept and consequences of polymerization shrinkage and shrinkage stress of composite resins and resin cements. Literature relating to polymerization shrinkage and shrinkage stress generation, research methodologies, and contributing factors are selected and reviewed. Clinical techniques that could reduce shrinkage stress and new developments on low-shrink dental materials are also discussed.

Original languageEnglish (US)
Pages (from-to)49-63
Number of pages15
JournalBrazilian oral research
Volume31
DOIs
StatePublished - Aug 1 2017

Keywords

  • Composite resins
  • Polymerization
  • Sensitivity and specificity
  • Tooth

ASJC Scopus subject areas

  • Dentistry(all)

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    Soares, C. J., Faria-E-Silva, A. L., Rodrigues, M. D. P., Fernandes Vilela, A. B., Pfeifer, C. S., Tantbirojn, D., & Versluis, A. (2017). Polymerization shrinkage stress of composite resins and resin cements - What do we need to know? Brazilian oral research, 31, 49-63. https://doi.org/10.1590/1807-3107BOR-2017.vol31.0062