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Research Article| Volume 61, ISSUE 4, P446-451, April 1989

An evaluation of porcelain strength and the effect of surface treatment

  • Author Footnotes
    * Assistant Professor, Department of Fixed Prosthodontics, University of Oklahoma, College of Dentistry.
    Susan E. Brackett
    Correspondence
    Reprint requests to:Dr. Susan E. Brackett The University of Oklahoma College of Dentistry Oklahoma City, OK 73190.
    Footnotes
    * Assistant Professor, Department of Fixed Prosthodontics, University of Oklahoma, College of Dentistry.
    Affiliations
    University of Oklahoma, College of Dentistry, Oklahoma City, Okla., USA

    University of Iowa, College of Dentistry, Iowa City, Iowa, USA

    University of North Carolina, School of Dentistry, Chapel Hill, N.C., USA
    Search for articles by this author
  • Author Footnotes
    ** Assistant Professor, Department of Family Dentistry, University of Iowa, College of Dentistry.
    James M. Leary
    Footnotes
    ** Assistant Professor, Department of Family Dentistry, University of Iowa, College of Dentistry.
    Affiliations
    University of Oklahoma, College of Dentistry, Oklahoma City, Okla., USA

    University of Iowa, College of Dentistry, Iowa City, Iowa, USA

    University of North Carolina, School of Dentistry, Chapel Hill, N.C., USA
    Search for articles by this author
  • Author Footnotes
    *** Professor and Chairman, Department of Fixed Prosthodontics. University of Iowa, College of Dentistry, currently Professor and Chairman, Department of Prosthodontics, Emory University, School of Dentistry, Atlanta, Ga.
    Kenneth A. Turner
    Footnotes
    *** Professor and Chairman, Department of Fixed Prosthodontics. University of Iowa, College of Dentistry, currently Professor and Chairman, Department of Prosthodontics, Emory University, School of Dentistry, Atlanta, Ga.
    Affiliations
    University of Oklahoma, College of Dentistry, Oklahoma City, Okla., USA

    University of Iowa, College of Dentistry, Iowa City, Iowa, USA

    University of North Carolina, School of Dentistry, Chapel Hill, N.C., USA
    Search for articles by this author
  • Author Footnotes
    **** Associate Professor, Department of Removable Prosthodontics, University of North Carolina, School of Dentistry.
    Richard D. Jordan
    Footnotes
    **** Associate Professor, Department of Removable Prosthodontics, University of North Carolina, School of Dentistry.
    Affiliations
    University of Oklahoma, College of Dentistry, Oklahoma City, Okla., USA

    University of Iowa, College of Dentistry, Iowa City, Iowa, USA

    University of North Carolina, School of Dentistry, Chapel Hill, N.C., USA
    Search for articles by this author
  • Author Footnotes
    * Assistant Professor, Department of Fixed Prosthodontics, University of Oklahoma, College of Dentistry.
    ** Assistant Professor, Department of Family Dentistry, University of Iowa, College of Dentistry.
    *** Professor and Chairman, Department of Fixed Prosthodontics. University of Iowa, College of Dentistry, currently Professor and Chairman, Department of Prosthodontics, Emory University, School of Dentistry, Atlanta, Ga.
    **** Associate Professor, Department of Removable Prosthodontics, University of North Carolina, School of Dentistry.
DOI:https://doi.org/10.1016/0022-3913(89)90012-7
An evaluation of porcelain strength and the effect of surface treatment
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      Abstract

      This investigation evaluated the flexural strengths of five porcelains commonly used in the all-porcelain margin technique and the effect of surface treatment on the flexural strength. Thirty samples were made by using each of five different porcelain margin systems. The five porcelain groups were subdivided into groups of 10 each to allow the evaluation of three surface treatments. A three-point flexural test was used to test the specimens on a universal testing machine. Crystar shoulder porcelain with distilled water as the binder was significantly stronger than the other porcelains tested, and porcelain treated with an overglaze was stronger than porcelain treated with autoglaze or autoglaze and polish.
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      Article info

      Footnotes

      Semifinalist, John J. Sharry Research Award competition, American College of Prosthodontists.

      First place Stanley D. Tylman Research Award competition, American Academy of Crown and Bridge Prosthodontics, Chicago, Ill.

      This project was supported by U.S. Public Health Service grant 2 S07 RR5313-25 awarded by the Biomedical Support Grant Program, Division of Research Resources, NIH.

      Identification

      DOI: https://doi.org/10.1016/0022-3913(89)90012-7

      Copyright

      © 1989 The C. V. Mosby Company. Published by Elsevier Inc.

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