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Title
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Highly-translucent, strong and aging-resistant 3Y-TZP ceramics for dental restoration by grain boundary segregation
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Author
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Abstract
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| Latest trends in dental restorative ceramics involve the development of full-contour 3Y-TZP ceramics which can avoid chipping of veneering porcelains. Among the challenges are the low translucency and the hydrothermal stability of 3Y-TZP ceramics. In this work, different trivalent oxides (Al2O3, Sc2O3, Nd2O3 and La2O3) were selected to dope 3Y-TZP ceramics. Results show that dopant segregation was a key factor to design hydrothermally stable and high-translucent 3Y-TZP ceramics and the cation dopant radius could be used as a controlling parameter. A large trivalent dopant, oversized as compared to Zr4+, exhibiting strong segregation at the ZrO2 grain boundary was preferred. The introduction of 0.2 mol% La2O3 in conventional 0.10.25 wt.% Al2O3-doped 3Y-TZP resulted in an excellent combination of high translucency and superior hydrothermal stability, while retaining excellent mechanical properties. |
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Language
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English
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Source (journal)
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Acta biomaterialia. - Place of publication unknown
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Publication
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Place of publication unknown
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2015
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ISSN
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1742-7061
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DOI
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10.1016/J.ACTBIO.2015.01.037
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Volume/pages
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16
(2015)
, p. 215-222
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ISI
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000351978600021
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Pubmed ID
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25662163
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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