RADIOPAQUE ACRYLIC RESINS CONTAINING MISCIBLE HEAVY-METAL COMPOUNDS

被引：40

作者：

RAWLS, HR

STARR, J

KASTEN, FH

MURRAY, M

SMID, J

CABASSO, I

机构：

[1] Louisiana State University Medical Center New Orleans

[2] Louisiana State University Medical Center New Orleans

[3] State University, New York Polymer Institute Syracuse

来源：

DENTAL MATERIALS | 1990年 / 6卷 / 04期

关键词：

D O I：

10.1016/S0109-5641(05)80006-5

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

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. © 1990.

引用

页码：250 / 255

页数：6

共 18 条

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