Abstract
Motivated by dental applications, Pr-colored 3Y-TZP nanopowders were prepared via the mechanical activation of ZrOCl2·8H2O, YCl3·6H2O and PrCl3·7H2O and NaOH in a planetary ball mill and subsequent heat treatment. The preparation processes were investigated using thermogravimetric and differential thermal analyses (TG-DTA) and X-ray diffraction (XRD). The obtained samples were characterized by transmission electron microscopy (TEM), XRD and X-ray photoelectron spectroscopy (XPS). The effects of the doped Pr content on chromaticity and cytotoxicity of the sintered ceramic discs were evaluated from the esthetic and biocompatible viewpoints. The results indicated that the obtained 3Y-TZP powders were tetragonal-structured and less than 10nm in average size. The doping of trace Pr into 3Y-TZP endowed the sintered sample with shades similar to the natural teeth but showed high biological safety according to in vitro cytotoxicity tests. Therefore, Pr-colored 3Y-TZP nanopowders synthesized by mechanochemical processing are the promising materials for colored dental restorations combining esthetic with biocompatibility.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.