Modeling the Residual Stresses in Reactive Resins-Based Materials: a Case Study of Photo-Sensitive Composites for Dental Applications

Journal Article · Wed Jun 02 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3455652· OSTI ID:21378001

Grassia, Luigi; D'Amore, Alberto ^[1]

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1. Second University of Naples-SUN Department of Aerospace and Mechanical Engineering Via Roma 19, 81031 Aversa (Italy)

Residual stresses in reactive resins-based composites are associated to the net volumetric contraction (shrinkage) arising during the cross-linking reactions. Depending on the restoration geometry (the ratio of the free surface area to the volume of the cavity) the frozen-in stresses can be as high as the strength of the dental composites. This is the main reason why the effectiveness and then the durability of restorations with composites remains quite lower than those realized with metal alloys based materials. In this paper we first explore the possibility to circumvent the mathematical complexity arising from the determination of residual stresses in reactive systems three-dimensionally constrained. Then, the results of our modeling approach are applied to a series of commercially available composites showing that almost all samples develop residual stresses such that the restoration undergoes failure as soon as it is realized.

• OSTI ID: 21378001
• Journal Information: AIP Conference Proceedings, Vol. 1255, Issue 1; Conference: 5. international conference on times of polymers (TOP) and composites, Ischia (Italy), 20-23 Jun 2010; Other Information: DOI: 10.1063/1.3455652; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
BIOLOGICAL RECOVERY
COMPOSITE MATERIALS
CROSS-LINKING
GEOMETRY
METALS
RESIDUAL STRESSES
RESINS
SHRINKAGE
SIMULATION
SURFACE AREA
THREE-DIMENSIONAL CALCULATIONS
CHEMICAL REACTIONS
ELEMENTS
MATERIALS
MATHEMATICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERIZATION
POLYMERS
STRESSES
SURFACE PROPERTIES