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- Title
New Radiopaque Bromine-Containing Monomers for Dental Restorative Materials.
- Authors
Tauscher, Sven; Catel, Yohann; Liska, Robert; Moszner, Norbert
- Abstract
Four bromine-containing methacrylates 1- 4 are synthesized from pentaerythritol tribromide and 2,2,2-tribromoethanol and are characterized by 1H and 13C NMR spectroscopy. Their free radical polymerization is performed in dimethylformamide (DMF), using 2,2′-azobis(2-methylpropionitrile) as initiator. The photopolymerization behavior of monomers 1-4 is investigated using a differential scanning calorimeter. Homopolymerizations and copolymerizations with 2-hydroxyethyl methacrylate are carried out. Both the presence of a carbamate group and of bromine atoms result in an increase of the polymerization rate. Dental resins are prepared by replacing a certain amount of 2-(4-cumyl-phenoxy)ethyl methacrylate by monomers 3 and 4 in a model formulation. The incorporation of these methacrylates leads to a significant increase of the radiopacity. Resins based on monomer 4 exhibit improved mechanical properties.
- Subjects
DENTAL fillings; DENTAL resins; METHACRYLATES; PHOTOPOLYMERIZATION; MONOMERS; THERAPEUTICS
- Publication
Macromolecular Materials & Engineering, 2016, Vol 301, Issue 6, p733
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201600012