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Journal of Dental Research
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The Effect of Using Layered Specimens for Determination of the Compressive Strength of Glass-ionomer Cements

H.M. Anstice

Materials Technology Group, Laboratory of the Government Chemist, Queens Road, Teddington, Middlesex, TW11 OLY, United Kingdom

J.W. Nicholson

Materials Technology Group, Laboratory of the Government Chemist, Queens Road, Teddington, Middlesex, TW11 OLY, United Kingdom

J.F. McCabe

Dental Materials Science Unit, Department of Prosthodontics, The Dental School, Newcastle-upon-Tyne, NE2 4BW, United Kingdom

Compressive strength is widely used as the criterion of strength of glass-ionomer dental cements, despite the difficulties in interpretation of the findings. With the introduction of light-cured glass-ionomer cements, which can be used only in thin layers, the question arises of how test specimens should be prepared for the measurement of compressive strength. A suggested method has been to prepare test pieces by building them up in layers, an approach which is examined critically in the current paper. Two different conventional (acid-base) glass-ionomers were studied with the use of layered and unlayered specimens of dimensions 6 mm (height) x 4 mm (diameter) and 12 mm (height) x 6 mm (diameter). While smaller samples gave the same value of compressive strength as larger specimens, layered specimens gave significantly lower values of compressive strength for both sizes. In view of these findings, and since the layered specimens are tedious to prepare, we conclude that compressive strength is unsatisfactory as a criterion of strength for light-cured glass-ionomer cements.

REFERENCES

  • Antonucci JM, McKinney JE, Stansbury JW, inventors (1988). (USSH) US Department of Health and Human Services, assignee. Resin-modified glass-ionomer dental cement, US Patent 7,160,856. July 26.
  • British Standards Institute (1981). Specification for dental glass-ionomer cements. BS 6039.
  • Gillam E. (1969). Materials under stress. London (UK):Newnes-Butterworth.
  • Groffman DM, Wilson AD (1981). The effect of certain experimental variables on the compressive strength of a dental silicate cement. J Dent 9:116-125.[CrossRef][Medline] [Order article via Infotrieve]
  • Iguodala-Cole BO, Aboush YEY, Vowles RW, Elderton RJ (1991). Challenging the ISO and BSI specifications. Effect of specimen size upon compressive and tensile strength measurements. Clin Mater 7:333-334.[CrossRef]
  • International Standards Organisation (1986 ). Dental glass polyalkenoate cements. ISO 7489.
  • McCabe JF, Watts DC, Wilson HJ, Worthington HV (1990). An investigation of test-house variability in the mechanical testing of dental materials and the statistical treatment of results. J Dent 18:90-97.[CrossRef][Medline] [Order article via Infotrieve]
  • Mitra SB (1988). European patent application 88,312,127.9 (Filed December 21).
  • Wilson AD (1976). Examination of the test for compressive strength applied to zinc oxide eugenol cements. J Dent Res 55:142-147.[Abstract/Free Full Text]
  • Wilson AD, McLean JW (1988). Glass ionomer cement. Chicago (IL): Quintessence.

Journal of Dental Research, Vol. 71, No. 12, 1871-1874 (1992)
DOI: 10.1177/00220345920710120301
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This Article
Right arrow Abstract Freely available
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Anstice, H.M.
Right arrow Articles by McCabe, J.F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Anstice, H.M.
Right arrow Articles by McCabe, J.F.
Right arrowPubmed/NCBI databases
*Compound via MeSH
*Substance via MeSH
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?