Radiopaque acrylic resins containing miscible heavy-metal compounds

H. R. Rawls, J. Starr, F. H. Kasten, M. Murray, J. Smid, I. Cabasso

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)250-255
Number of pages6
JournalDental Materials
Issue number4
StatePublished - Oct 1990

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials


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