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      Dental ceramics: An update

      review-article
      , 1
      Journal of Conservative Dentistry : JCD
      Medknow Publications
      Ceramics, CADCAM, zirconia

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          Abstract

          In the last few decades, there have been tremendous advances in the mechanical properties and methods of fabrication of ceramic materials. While porcelain-based materials are still a major component of the market, there have been moves to replace metal ceramics systems with all ceramic systems. Advances in bonding techniques have increased the range and scope for use of ceramics in dentistry. In this brief review, we will discuss advances in ceramic materials and fabrication techniques. Examples of the microstructure property relationships for these ceramic materials will also be addressed.

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          Current ceramic materials and systems with clinical recommendations: a systematic review.

          Developments in ceramic core materials such as lithium disilicate, aluminum oxide, and zirconium oxide have allowed more widespread application of all-ceramic restorations over the past 10 years. With a plethora of ceramic materials and systems currently available for use, an overview of the scientific literature on the efficacy of this treatment therapy is indicated. This article reviews the current literature covering all-ceramic materials and systems, with respect to survival, material properties, marginal and internal fit, cementation and bonding, and color and esthetics, and provides clinical recommendations for their use. A comprehensive review of the literature was completed seeking evidence for the treatment of teeth with all-ceramic restorations. A search of English language peer-reviewed literature was undertaken using MEDLINE and PubMed with a focus on evidence-based research articles published between 1996 and 2006. A hand search of relevant dental journals was also completed. Randomized controlled trials, nonrandomized controlled studies, longitudinal experimental clinical studies, longitudinal prospective studies, and longitudinal retrospective studies were reviewed. The last search was conducted on June 12, 2007. Data supporting the clinical application of all-ceramic materials and systems was sought. The literature demonstrates that multiple all-ceramic materials and systems are currently available for clinical use, and there is not a single universal material or system for all clinical situations. The successful application is dependent upon the clinician to match the materials, manufacturing techniques, and cementation or bonding procedures, with the individual clinical situation. Within the scope of this systematic review, there is no evidence to support the universal application of a single ceramic material and system for all clinical situations. Additional longitudinal clinical studies are required to advance the development of ceramic materials and systems.
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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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              Introduction to dental materials

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                Author and article information

                Journal
                J Conserv Dent
                JCD
                Journal of Conservative Dentistry : JCD
                Medknow Publications (India )
                0972-0707
                0974-5203
                Oct-Dec 2010
                : 13
                : 4
                : 195-203
                Affiliations
                Department of Conservative Dentistry, Bapuji Dental College and Hospital, Davangere, Karnataka, India
                [1 ]Department of Periodontology, ABSMIDS, Mangalore - 575 003, Karnataka, India
                Author notes
                Address for correspondence: Dr. Arvind Shenoy, Department of Conservative Dentistry, Bapuji Dental College and Hospital, Davangere - 4, Karnataka, India. E-mail: thedentist1@ 123456usa.net
                Article
                JCD-13-195
                10.4103/0972-0707.73379
                3010023
                21217946
                06ef0ef6-5f3c-48f6-81fe-114fc6b702e2
                © Journal of Conservative Dentistry

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 03 October 2010
                : 25 October 2010
                : 26 October 2010
                Categories
                Invited Review

                Dentistry
                cadcam,ceramics,zirconia
                Dentistry
                cadcam, ceramics, zirconia

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