Laser profilometry and scanning electron microscopy to study the surface structure of dental casting alloys of noble and precious metals

Using laser profilometry and scanning electron microscopy combined with electron magnetic resonance imaging, the authors studied the microstructure of the surface of dental casting alloys of noble (Selector 3 (Metalor), Palliag MJ (Degussa), Solaro 3 (Metalor), Superpal (Russia), Plagodent (Russia) and precious (Palliag W (Degussa), Mattident P (Johnson Matthey) metals. The results were compared with the parameters of natural tooth enamel surface.
According to the study, the microstructure and microrelief of the surface of Plagodent (Russia), a superhard gold-platinum alloy with a high gold content, is closest to parameters of natural tooth enamel. Significant structural homogenicity, high density, and high surface purity together with no open porosity reduce the probability of the aggregation of oral fluid microbial and chemical agents on the material surface, which is a predictor of high efficacy of orthopedic treatment.

granularity, solubility, crystallization, alloying elements, melt