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Measurement of Bending Deformation for Small Diameter Orthodontic Wires

Department of Dental Materials and Walter F. Joyce, Jr., Memorial Biomaterials Laboratory, School of Dentistry, Marquette University, Milwaukee, Wisconsin 53233, USA

C. Louis Myers

Department of Dental Materials and Walter F. Joyce, Jr., Memorial Biomaterials Laboratory, School of Dentistry, Marquette University, Milwaukee, Wisconsin 53233, USA

The stiffness tester and torque meter were found to yield nearly the same measurements of bending deformation for orthodontic wires as small as .007 inch diameter, provided the different bending apparatus are calibrated to each other. Although frictional losses in the test apparatus did not appear to be significant, the test span length does significantly affect measured values of Young's modulus and flexural yield strength, in a manner similar to that previously found for larger-diameter wires.

REFERENCES

• New American Dental Association Specification No. 32 for Orthodontic Wires Not Containing Precious Metals, JADA 95:1169-1171,1977.
• Brantley, W.A.; Augat, W.S.; Myers, C.L.; and Winders, R.V.: Bending Deformation Studies of Orthodontic Wires, J Dent Res (to be published).
• Craig, R.G.; McIlwain, E.D.; and Peyton, F.A.: Bending and Torsion Properties of Endodontic Instruments, Oral Surg, Oral Med and Oral Path 25:239-254, 1968.
• Nie, N.H.; Hull, C.H.; Jenkins, J.G.; Steinbrenner, K.; and Bent, D.H.: Statistical Package for the Social Sciences, Ch. 18, 2nd ed, New York: McGraw-Hill Book Co., 1975.

Journal of Dental Research, Vol. 58, No. 7, 1696-1700 (1979)
DOI: 10.1177/00220345790580070801


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted 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 Brantley, W. A. Articles by Myers, C. L. Search for Related Content PubMed PubMed Citation Articles by Brantley, W. A. Articles by Myers, C. L. Social Bookmarking                         What's this?