2015
DOI: 10.1016/j.actbio.2015.01.023
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Enhanced reliability of yttria-stabilized zirconia for dental applications

Abstract: An increasing number of dental applications based on yttria-stabilized zirconia (3Y-TZP) have been developed in recent years as a result of the advances and versatility of dry-processing and soft machining at the pre-sintered state. Nonetheless, the long-term surface stability of these materials in humid environment is still a matter of concern and may limit its application. In this work, a simple method to prevent hydrothermal degradation on zirconia surface is studied in detail. This method involves the infi… Show more

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Cited by 54 publications
(32 citation statements)
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“…This qualitative observation is confirmed by the EDS CeO 2 profile reported in Fig. 5, which indicates that the CeO 2 content rapidly diminishes in the first 1-2 μm of material from about 5 mol% to below 1 mol%, being the latter content not capable for modifying the microstructure and aging behavior of the base material, as it was shown in previous works for deeper codoping obtained through infiltration of porous preforms (Camposilvan et al, 2015). It is worth noting that a continuum CeO 2 diffusion profile is obtained in the present work, so there is no sharp interface between Y-TZP and Ce-Y-TZP that may alter the surface mechanical stability.…”
Section: Effect Of the Treatments On The Surfacesupporting
confidence: 83%
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“…This qualitative observation is confirmed by the EDS CeO 2 profile reported in Fig. 5, which indicates that the CeO 2 content rapidly diminishes in the first 1-2 μm of material from about 5 mol% to below 1 mol%, being the latter content not capable for modifying the microstructure and aging behavior of the base material, as it was shown in previous works for deeper codoping obtained through infiltration of porous preforms (Camposilvan et al, 2015). It is worth noting that a continuum CeO 2 diffusion profile is obtained in the present work, so there is no sharp interface between Y-TZP and Ce-Y-TZP that may alter the surface mechanical stability.…”
Section: Effect Of the Treatments On The Surfacesupporting
confidence: 83%
“…This result may be relevant since the treatment does not interfere with the aesthetics in the case of dental crown and other visible parts. In contrast, 3Y-TZP materials doped with 2-7 mol % of CeO 2 by infiltration at the pre-sintered state (Camposilvan et al, 2015(Camposilvan et al, , 2012 and equally resistant to hydrothermal degradation had a marked yellow tonality.…”
Section: Effect Of the Treatments On The Surfacementioning
confidence: 89%
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“…Such phase transformation involves a volumetric increase (~4 %) that may induce compressive stresses in the crack area; this prevents crack propagation and thus increases fracture toughness [3]. This strengthening mechanism known as the transformation toughening makes ZrO 2 much tougher than all other ceramic materials [1,[4][5][6][7][8][9]. The fracture resistance of ceramics is usually characterized by the mode I fracture toughness [10][11][12].…”
Section: Introductionmentioning
confidence: 99%