Ageing of Zirconia Dedicated to Dental Prostheses for Bruxers Part 2: Influence of Heat Treatment for Surface Morphology, Phase Composition and Mechanical Properties

Abstract

Purpose: This part of the study focuses on the influence of zirconia heat treatment for surface morphology, phase composition and mechanical properties Methods: Zirconia samples was prepared with ISO 13356:2013 and ISO 14704:2008 recommendations. X-ray diffraction, observations (SEM) and (AFM), microhardness (Olivera & Phara method), and static bending test (4PBT) were taken. Results: characterization of YSZ and high temperature heat treatment has clearly shown that the aging process influences the change in phase composition of the material, significantly worsening the topography. In turn, re-treatment of the high temperature made after the artificial aging process results in reverse transformation of the desired tetragonal phase, but does not affect the improvement of surface morphology. Conclusions: The research made it possible to assess the negative impact of the zirconium oxide aging simulation process. Because of the failure to achieve the intended results, it was also proved that the high-temperature re-processing was not appropriate.

Alumina and Zirconia-Reinforced Polyamide PA-12 Composites for Biomedical Additive Manufacturing

“…Composite materials of this class are dedicated to both CAD/CAM and additive manufacturing systems [ 19 , 20 ]. The use of PCCs avoids the disadvantages of all-ceramic materials such as ZrO 2 and Al 2 O 3 , which, due to biomechanical mismatches, may excessively abrade the enamel, or for certain diseases like bruxism, more readily undergo decomposition in the patient’s mouth [ 21 , 22 , 23 , 24 ]. Ning pointed out that PCCs, as compared to full ceramic materials, combine the advantages of polymers and ceramics and offer an interesting alternative due to their great aesthetics and outstanding machinability [ 19 ].…”

Surface modification methods of ceramic filler in ceramic-carbon fibre composites for bioengineering applications – A systematic review

“…The authors' own experience regarding the ZrO 2 resistance to the so-called low-temperature degradation shows that only doping of metastable ZrO 2 phases or applying active coatings can be a solution to the problem of destruction of ceramics in the body environment [92][93][94]. Beverages enriched with various acids, such as tartaric acid, malic acid, lactic acid, ascorbic acid, citric acid, and phosphoric acid have a strong destructive effect on teeth surface and dentures made from ceramics [91]; what is more, bruxism could be destructive for dentures [95] as well.…”

Simple Approach to Medical Grade Alumina and Zirconia Ceramics Surface Alteration via Acid Etching Treatment

“…This is analogous to the zirconium drawbacks connected with its metastable nature, which a significant amount of work has been dedicated to [19][20][21][22][23]. Other disadvantages of ceramics are their high fragility and a relatively time-consuming and expensive production process, metastable phase's stabilization, and dopant selection [24][25][26][27][28][29].…”