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Current Oral Health Reports
Published in: Current Oral Health Reports 3/2016

01-09-2016 | Dental Restorative Materials (M Özcan, section editor)

Artificial Aging of Zirconium Dioxide: An Evaluation of Current Knowledge and Clinical Relevance

Authors: Mutlu Özcan, Cláudia Ângela Maziero Volpato, Márcio Celso Fredel

Published in: Current Oral Health Reports | Issue 3/2016

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Abstract

Due to its superior mechanical properties, yttrium-stabilized tetragonal zirconia polycrystal is considered as one of the most promising materials to manufacture prosthetic frameworks, monolithic crowns, and abutments for implants in dentistry. When stabilized in the tetragonal phase, the structure of zirconia can respond to external stress by increasing its toughness and resistance. Unfortunately, when subjected to a humid environment, zirconia may undergo considerable degradation characterized by increased surface roughness, grain growth, and propagation of microcracks that could be detrimental for its mechanical properties. This phenomenon, also known as low-temperature degradation (LTD), when not minimized, may represent a setback for the longevity of zirconia especially used for biomedical applications. LTD is studied in in vitro or in vivo settings employing different strategies. Present clinical studies, however, with their shortcomings, do not signify high incidence of failures of zirconia for dental applications. The LTD of zirconia is currently being criticized based on laboratory testing which may be suboptimal. This review will highlight the existing knowledge on the artificial aging methods studying LTD in zirconia and their relevance considering clinical performance of zirconia prostheses.
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Metadata
Title
Artificial Aging of Zirconium Dioxide: An Evaluation of Current Knowledge and Clinical Relevance
Authors
Mutlu Özcan
Cláudia Ângela Maziero Volpato
Márcio Celso Fredel
Publication date
01-09-2016
Publisher
Springer International Publishing
Published in
Current Oral Health Reports / Issue 3/2016
Electronic ISSN: 2196-3002
DOI
https://doi.org/10.1007/s40496-016-0096-9

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