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      Zirconia as a Dental Biomaterial

      review-article
      * , ,
      Materials
      MDPI
      biomaterials, zirconia, bonding

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          Abstract

          Ceramics are very important in the science of dental biomaterials. Among all dental ceramics, zirconia is in evidence as a dental biomaterial and it is the material of choice in contemporary restorative dentistry. Zirconia has been applied as structural material for dental bridges, crowns, inserts, and implants, mostly because of its biocompatibility, high fracture toughness, and radiopacity. However, the clinical success of restorative dentistry has to consider the adhesion to different substrates, which has offered a great challenge to dental zirconia research and development. This study characterizes zirconia as a dental biomaterial, presenting the current consensus and challenges to its dental applications.

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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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            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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              Aspects of silane coupling agents and surface conditioning in dentistry: an overview.

              To give an overview of aspects of silane coupling agents and surface conditioning in dentistry.
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                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                04 August 2015
                August 2015
                : 8
                : 8
                : 4978-4991
                Affiliations
                Post-graduation Program in Dentistry, Dental School, University of Passo Fundo, Campus I, BR285, Passo Fundo, RS 99052-900, Brazil; E-Mails: opey@ 123456correo.ugr.es (O.E.P.), rodrigo.alle@ 123456yahoo.com.br (R.A.)
                Author notes
                [* ]Author to whom correspondence should be addressed; E-Mail: dbona@ 123456upf.br ; Tel.: +55-54-3316-8395; Fax: +55-54-3316-8409.
                Article
                materials-08-04978
                10.3390/ma8084978
                5455532
                28793485
                90c3200d-5c83-4064-b212-c7e95f12652f
                © 2015 by the authors.

                Licensee MDPI, 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/4.0/).

                History
                : 24 June 2015
                : 30 July 2015
                Categories
                Review

                biomaterials,zirconia,bonding
                biomaterials, zirconia, bonding

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