Surface Properties of Dental Zirconia after Clinical Grinding and Polishing

Abstract:

Three kinds of dental zirconia (Cercon, NANOZR, and P-NANOZR) were ground and polished with seven kinds of clinical device and materials. After these grinding and polishing, the surface roughness and the glossiness were analyzed. The crystal phases of the surface were analyzed with a micro X-ray diffractometer. The results demonstrated that all three zirconia showed the smallest roughness and the highest glossiness when they were polished with diamond-containing polishing pastes. Tetragonal to rhombohedral transformation was observed on the ground and polished surfaces of Cercon and ZENOSTAR, whereas monoclinic phase was also detected on the ground and polished surface of P-NANOZR. The polishing with diamond-containing pastes showed the smallest transformation amount of rhombohedral and monoclinic phases. It is concluded that dental zirconia can be well polished with diamond-containing pastes, and the phase transformation are also reduced.

• Periodical: Key Engineering Materials (Volumes 529-530)
• Pages: 501-506
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.529-530.501
• Online since: November 2012
• Authors: Seiji Ban, Tohru Sakakibara, Kentaro Yoshihara, Masami Takeuchi, Tatsushi Kawai, Hiroshi Murakami, Hiroshi Kono
• Keywords: Dental, Grinding, Polishing, Surface, Zirconia

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