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      Ceramics for Dental Applications: A Review

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          Abstract

          Over the past forty years, the technological evolution of ceramics for dental applications has been remarkable, as new materials and processing techniques are steadily being introduced. The improvement in both strength and toughness has made it possible to expand the range of indications to long-span fixed partial prostheses, implant abutments and implants. The present review provides a state of the art of ceramics for dental applications.

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          Most cited references83

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          Stabilized zirconia as a structural ceramic: an overview.

          This review introduces concepts and background from the ceramics engineering literature regarding metastable zirconia ceramics to establish a context for understanding current and emerging zirconia-based dental ceramics.
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            What future for zirconia as a biomaterial?

            The failure events of Prozyr femoral heads in 2001-2002 have opened a strong, controversial issue on the future of zirconia as a biomaterial. The aim of this paper is to review and analyze the current knowledge on ageing process and on its effect on the long term performance of implants in order to distinguish between scientific facts and speculation. Current state of the art shows the strong variability of zirconia to in vivo degradation, as a consequence of the strong influence of processing on ageing process. As different zirconia from different vendors have different process related microstructure, there is a need to assess their ageing sensitivity with advanced and accurate techniques, and ISO standards should be modified, especially to gain confidence from clinicians. There is a trend today to develop alumina-zirconia composites as an alternative to monolithic alumina and zirconia: the issue of ageing is also discussed for these composites.
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              Zirconia as a ceramic biomaterial.

              Zirconia ceramics have several advantages over other ceramic materials, due to the transformation toughening mechanisms operating in their microstructure that can give to components made out of them, very interesting mechanical properties. The research on the use of zirconia ceramics as biomaterials started about twenty years ago, and now zirconia (Y-YZP) is in clinical use in THR, but developments are in progress for application in other medical devices. Recent developments have concentrated on the chemistry of precursors, in forming and sintering processes, and on surface finish of components. Today's main applications of zirconia ceramics is in THR ball heads. This review takes into account the main results achieved up to now, and is focused on the role that microstructural characteristics play on the TZP ceramics behaviour in ball heads, namely mechanical properties and their stability, wear of the UHMWPE paired to TZP, and their influence on biocompatibility.
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                Author and article information

                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                Molecular Diversity Preservation International
                1996-1944
                11 January 2010
                January 2010
                : 3
                : 1
                : 351-368
                Affiliations
                The Ohio State University College of Dentistry, 305 W 12 th Avenue, Columbus, OH 43210, USA; E-Mail: holloway.3@ 123456osu.edu (J.A.H.)
                Author notes
                [* ] Author to whom correspondence should be addressed; E-Mail: denry.1@ 123456osu.edu ; Tel.: +1-614-292-0905; Fax: +1-614-292-9422.
                Article
                materials-03-00351
                10.3390/ma3010351
                5525170
                a569b5be-f8a1-448b-b1a8-87589feb1878
                © 2010 by the authors;

                licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                : 01 December 2009
                : 05 January 2010
                : 07 January 2010
                Categories
                Review

                dentistry,ceramic,crystalline phase,alkali silicates,zirconia

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