The effect of matrix phase morphology on the structure of Ag-Cu-Pd dispersed phase dental amalgam.
The effect of an Ag-Cu-Pd dispersant alloy on the structure of amalgams fabricated with two different particle types of low-copper amalgam matrices was investigated. In amalgams L and L (0), a low-copper lathe-cut amalgam Aristalloy was used as the matrix. In amalgams S and S(0), the matrix used was Spheralloy, a low-copper spherical amalgam. X-ray diffraction was used to analyse the relative content of the phases in the amalgams. The presence of Pd in the dispersant of amalgams L and S resulted in a decrease in the amount of eta' (Cu6Sn5) and an increase in the amount of unreacted particles when compared to the controls L(0) and S(0). Amalgams fabricated with a spherical alloy matrix (S and S(0)) showed a greater effect than amalgams fabricated with a lathe-cut matrix alloy (L and L(0)).
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003300:Copper / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D003723:Dental Amalgam / Q000737:chemistry*; D008422:Materials Testing; D008628:Mercury / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D014001:Tin / Q000737:chemistry; D014961:X-Ray Diffraction
D003722:Dental Alloys; D012834:Silver; D010165:Palladium; D014001:Tin; D003300:Copper; D003723:Dental Amalgam; D008628:Mercury