Some Properties of Au-Containing Dental Amalgam
- 1 January 1973
- journal article
- research article
- Published by Taylor & Francis in Biomaterials, Medical Devices, and Artificial Organs
- Vol. 1 (1) , 223-238
- https://doi.org/10.3109/10731197309118874
Abstract
Conventional dental alloy, mostly Ag3Sn, has been modified by substituting 10 wt% Au for as much Ag. A spherical-particle, rapidly quenched alloy powder was produced by spraying the melt into a reducing atmosphere. Amalgam prepared from this alloy has improved physical and chemical properties, especially corrosion resistance. Tensile strength was about 9000 psi, creep about 0.94%, and dimensional change about +23 μm/cm. Dissolution was essentially zero at -0.25 V in an artificial saliva. X-ray diffraction showed γ1 and γ2 peaks in the freshly prepared amalgam but only γ1 after storage at body temperature for about 2 weeks. Metallographic specimens showed a ring containing a high concentration of Au and Sn around each alloy particle in the amalgam.Keywords
This publication has 8 references indexed in Scilit:
- The amount of tin in the ?1 phase of dental amalgamJournal of Biomedical Materials Research, 1971
- Corrosion Resistant Silver-Tin AmalgamsJournal of Dental Research, 1971
- Pressure-Induced Disappearance of the γ2 (HgSn7-8) Phase in Dental AmalgamJournal of Dental Research, 1971
- Ag‐Sn‐Hg alloys as electron compoundsJournal of Biomedical Materials Research, 1970
- Corrosion of Amalgam RestorationsJournal of Dental Research, 1970
- Corrosion of Dental Amalgam and its Component PhasesJournal of Dental Research, 1967
- The microstructure of dental amalgam*Australian Dental Journal, 1965
- The Mechanism of Marginal Fracture of Amalgam FillingsActa Odontologica Scandinavica, 1965