This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Johnston, W.M. Articles by O'Brien, W.J. Search for Related Content PubMed PubMed Citation Articles by Johnston, W.M. Articles by O'Brien, W.J. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB ALUMINUM Social Bookmarking                         What's this?

Materials Science

The Shear Strength of Dental Porcelain

The University of Michigan, School of Dentistry, Ann Arbor, Michigan 48109

W.J. O'Brien

The University of Michigan, School of Dentistry, Ann Arbor, Michigan 48109

The widespread use of porcelain in restorative dentistry is generally due to its esthetic appearance even though it is brittle. The transverse strength, or modulus rupture, averages around 108 MPa (16,000 psi) for aluminous porcelain and 88 MPa (13,000 psi) for feldspathic porcelain.¹ The tensile strength, as determined by diametral compression, is approximately 29 MPa (4,200 psi) for opaque feldspathic porcelain and 40 MPa (5,800 psi) for gingival feldspathic porcelain.2 The compressive strength is reported to be 340 MPa (50,000 psi) for a feldspathic porcelain.3 These mechanical strength properties of dental porcelain confine its use to low stress-bearing restorations or to those restorations with a metal substrate.

Journal of Dental Research, Vol. 59, No. 8, 1409-1411 (1980)
DOI: 10.1177/00220345800590080901


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				J.P. Coffey, K.J. Anusavice, P.H. Dehoff, R.B. Lee, and B. Hojjatie Influence of Contraction Mismatch and Cooling Rate on Flexural Failure of PFM Systems Journal of Dental Research, January 1, 1988; 67(1): 61 - 65. [Abstract] [PDF]

				J.L. Drummond, R.G. Randolph, V.J. Jekkals, and J.W. Lenke Shear Testing of the Porcelain-Metal Bond Journal of Dental Research, December 1, 1984; 63(12): 1400 - 1401. [Abstract] [PDF]