The influence of postcuring on the fracture properties of photo‐cured dimethacrylate based dental composite resin
- 1 August 1987
- journal article
- research article
- Published by Wiley in Journal of Biomedical Materials Research
- Vol. 21 (8), 979-989
- https://doi.org/10.1002/jbm.820210804
Abstract
The dependence of the fracture behavior of photocured dimethacrylate-based composite resins on the matrix crosslink density (varied by postcuring at various temperatures) was investigated. In general, the fracture toughness (Klc) was increased by posfcuring as has been observed for epoxy–amine networks. The flexural and diametral tensile strength was also raised by postcuring. Calculation of the inherent flaw size (a0) from these properties produced conflicting dependencies on the state of cure. It is suggested that improved wear resistance and incisal edge strength of dental composite resin restoratives may be achieved by increased degree of cure.Keywords
This publication has 21 references indexed in Scilit:
- The effect of resin formulation on the degree of conversion and mechanical properties of dental restorative resinsJournal of Biomedical Materials Research, 1986
- Fracture properties of composite and glass ionomer dental restorative materialsJournal of Biomedical Materials Research, 1985
- In vivo and in vitro Wear of Potential Posterior CompositesJournal of Dental Research, 1984
- Spectral Distributions of Dental Photopolymerization SourcesJournal of Dental Research, 1982
- A silver staining technique for investigating wear of restorative dental compositesJournal of Biomedical Materials Research, 1981
- Fracture of WC-Co alloys: an example of spatially constrained crack tip opening displacementProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1977
- Fracture Toughness of Composite and Unfilled Restorative ResinsJournal of Dental Research, 1977
- Pattern of Wear in Posterior Composite RestorationsJournal of Dental Research, 1977
- Fracture surface work measurements on glassy polymers by a cleavage technique. II. Effects of crosslinking and preorientationJournal of Applied Polymer Science, 1965
- Measurement of the tensile strength of brittle materialsBritish Journal of Applied Physics, 1959