Radiopaque acrylic resins containing miscible heavy-metal compounds
| Autor: | Henry R Rawls, Frederick H. Kasten, M. L. Murray, J. Smid, J. Starr, I. Cabasso |
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| Rok vydání: | 1990 |
| Předmět: |
Materials science
Biocompatibility Radiodensity Acrylic Resins chemistry.chemical_element Contrast Media Bismuth Metal chemistry.chemical_compound Dental Materials Materials Testing General Materials Science Methyl methacrylate Composite material General Dentistry Acrylic resin Foreign Bodies Radiography chemistry Mechanics of Materials Homogeneous visual_art visual_art.visual_art_medium Methacrylates Uranium Digestive tract Zirconium Nuclear chemistry |
| Zdroj: | Dental materials : official publication of the Academy of Dental Materials. 6(4) |
| ISSN: | 0109-5641 |
| Popis: | Radiopacity is needed in order to facilitate diagnosis of polymeric appliances, which may be dislodged and become impacted in the upper respiratory or digestive tracts. In order for a stable, optically transparent, radiopaque material to be provided, heavy-metal compounds were investigated which we had previously shown to form homogeneous structures with methyl methacrylate-based systems. It was found that, when present in PMMA at 11 to 14%, several compounds of either bismuth or uranium or 35% of an organo-zirconium compound impart radiopacity equivalent to that of aluminum. A low level of cytotoxicity and lack of mutagenicity indicated that a high level of biocompatibility can be expected. Processing characteristics are somewhat altered, but formulations satisfactory for use in various dental devices were found. |
| Databáze: | OpenAIRE |
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