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Iodinated methacrylate copolymers as X-ray opaque denture base acrylics
K W Davy1, M R Anseau, C Berry
1University of London IRC in Biomedical Materials, Department of Biomaterials in Relation to Dentistry, London Hospital Medical College, Whitechapel, UK.
Journal of Dentistry
|May 30, 1998
Summary
Novel iodinated methacrylate copolymers offer superior X-ray opacity for denture bases. These materials also exhibit comparable mechanical properties and enhanced thermal stability to standard polymethyl methacrylate (PMMA).
Area of Science:
- Polymer Chemistry
- Materials Science
- Biomaterials Engineering
Background:
- Denture base resins require radiopacity for clinical assessment.
- Standard polymethyl methacrylate (PMMA) lacks sufficient radiopacity.
- Development of radiopaque additives is crucial for improved dental prosthetics.
Purpose of the Study:
- To synthesize and evaluate novel iodinated methacrylate copolymers.
- To assess their efficacy as X-ray opaque additives for denture base resins.
- To determine their impact on mechanical and thermal properties.
Main Methods:
- Synthesis of specific iodinated methacrylate monomers.
- Suspension copolymerization with methyl methacrylate (MMA) to form copolymer beads.
- Processing of beads into test-pieces for mechanical and radiopacity evaluation.
Main Results:
- Copolymer beads with 25 wt% iodinated copolymer achieved X-ray opacity comparable to aluminum.
- Mechanical properties and appearance were similar to standard PMMA.
- Superior thermal stability was observed compared to standard PMMA.
Conclusions:
- Novel iodinated methacrylate monomers are promising for creating X-ray opaque denture bases.
- These monomers can be used as polymerizable additives to MMA.
- Potential applications exist in other fields requiring thermally stable, X-ray opaque materials.