Microstructural and grain size analysis of zirconium materials for dental prostheses restoration

• DOI: https://doi.org/10.22533/at.ed.3174142429043

• Palavras-chave: -

• Keywords: zirconia, biocompatible ceramic, microstructure, grain size, dental restoration.

• Abstract: Zirconia is a ceramic material with great potential in the biomedical field, it shows properties such as biocompatibility, low reactivity, and optical qualities. Its use as a dental material has been reported with excellent mechanical results, however it presents a high opacity limitation. A characterization of the microstructure was carried out with SEM on Zr specimens thermally etched at 1200°C, using a curing and cooling speed of 10°C/min. The average grain size was measured from the 10,000x micrographs using the linear intercept method in ImageTool software. The microstructure of the zirconium materials was obtained through micrography. The relationship between the modifier content and the crystallographic phase with the grain size was identified; according to the linear intersection method, there is a relationship between the modification and the reported grain size. Simplifying design, manufacturing, and aesthetics with digital developments in complex restorations, improves monolithic ceramic restorations. Increasing the amount of Y2O3 results in a higher cubic phase content and a larger grain size and reduces light scattering.