Effect of admixed indium on the clinical success of amalgam restorations.
The purpose of this study was to clinically evaluate two formulations of a dispersed-phase, high-copper dental amalgam alloy (Indisperse), which contained admixed indium. One alloy tested contained 5% indium, and the second alloy contained 10% indium. A similar alloy without indium, Dispersalloy, was also placed for comparison. Over the course of the five-year study, there were no differences clinically or statistically regarding texture and luster. The margins of the restorations containing indium incurred slightly less fracture than the non-indium-containing restorations; however, these differences were not clinically significant. It can be concluded that the admixture of 5-10% indium as well as the increased ratio of eutectic spheres to lathe-cut particles found in the indium alloys enhance the clinical performance of amalgam restorations.
Johnson
G H
GH
Department of Restorative Dentistry, University of Washington, School of Dentistry, Seattle 98195.
Bales
D J
DJ
Powell
L V
LV
D003723:Dental Amalgam / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000009:adverse effects; D006801:Humans; D007204:Indium; D008137:Longitudinal Studies; D013499:Surface Properties; D014082:Tooth Fractures / Q000209:etiology / Q000517:prevention & control
D007204:Indium; C076832:Indisperse; D003723:Dental Amalgam