Influence of ketones on selected mechanical properties of resin composites.
The present study investigated a concept for additional cross-linking of dental polymers, by which resistance to wear of resin composites might be increased. Bifunctional ketones were added to monomer mixtures, which were then made light-curing and loaded with filler. The monomer mixtures were varied with respect to type and ratio of monomer and ketone. For measurement of possible effects of the cross-linking agents added, four mechanical properties of the experimental resin composites were determined. Addition of the bifunctional ketone diacetyl resulted in the following increases in mechanical properties: diametral tensile strength, 11%; flexural strength, 29%; modulus of elasticity, 19%; and modulus of resilience, 50%.
Peutzfeldt
A
A
Department of Dental Materials, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark.
Asmussen
E
E
D003188:Composite Resins / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry*; D004548:Elasticity; D007659:Ketones / Q000737:chemistry*; D008422:Materials Testing; D013718:Tensile Strength
D003188:Composite Resins; D003432:Cross-Linking Reagents; D007659:Ketones