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Journal of Dental Research
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Flexure Modulus of Orthodontic Stainless Steel Wires

D.K. Yoshikawa

Department of Growth and Development, School of Dentistry, University of California, San Francisco, California 94143

C.J. Burstone

Department of Orthodontics

A.J. Goldberg

Department of Restorative Dentistry, School of Dental Medicine, University of Connecticut, Farmington, Connecticut 06032

J. Morton

Department of Orthodontics

The flexure modulus of elasticity of standard stainless steel orthodontic wires was determined by the use of an iterative finite element technique to be 25.4 x 106 psi (175 x 103 MN/m2). This technique accounts for the configurational changes in the test specimens due to the relatively large deflections during the cantilever test. Under these conditions, the elementary strength of materials relationships does not accurately describe the flexure characteristics of the wires.

REFERENCES

  • Goldberg, A.J.; Vanderby, R., Jr.; and Burstone, C.J.: Reduction in the Modulus of Elasticity in Orthodontic Wires, J Dent Res 56:1227-1231,1977.[Abstract/Free Full Text]
  • Morrow, R.E.: Stored Energy in Orthodontic Wires, IADR Progr & Abst 57: No. 174, 1978.
  • Brantley, W.A.; Augat, W.S.; Myers, C.L.; and Winders, R.V.: Bending Deformation Studies of Orthodontic Wires, J Dent Res 57:609-615,1978.[Abstract/Free Full Text]
  • Brantley, W.A.: Comments on Stiffness Measurements for Orthodontic Wires, J Dent Res 55:705, 1976.[Free Full Text]
  • Brantley, W.A. and Myers, C.L.: Measurement of Bending Deformation for Small Diameter Orthodontic Wires, J Dent Res 58:1696-1700, 1979.[Abstract/Free Full Text]
  • Instruction Manual for Six-inch-pound Capacity Stiffness Tester: Tinius Olsen Testing Machine Co., Inc., Willow Grove, PA, p. 9.
  • Solonche, D.J.; Burstone, C.J.; and Vanderby, R., Jr.: A Device for Determining the Mechanical Behavior of Orthodontic Appliances, IEEE Trans on Eng in Med and Biol 24:538-539, 1977.[CrossRef]
  • Popov, E.P.; Introduction to Mechanics of Material, Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1952, p. 435.
  • American Dental Association Specifications No. 32 for Orthodontic Wires Not Containing Precious Metals, JADA 95:1169-1171, 1977.
  • Timoshenko, S. and Goodier, J.N.: Theory of Elasticity, 2nd ed., New York: McGraw-Hill Co., Inc., 1951, p. 39.
  • Snedecor, G.W. and Cochran, W.G.: Statistical Methods, 6th ed., Ames, Iowa: Iowa State University Press, 1967, pp. 135-157.

Journal of Dental Research, Vol. 60, No. 2, 139-145 (1981)
DOI: 10.1177/00220345810600020801
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This article has been cited by other articles:


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A.J. Goldberg, C.J. Burstone, and H.A. Koenig
Material Science Plastic Deformation of Orthodontic Wires
Journal of Dental Research, September 1, 1983; 62(9): 1016 - 1020.
[Abstract] [PDF]

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 JDRHome page
A.J. Goldberg, J. Morton, and C.J. Burstone
The Flexure Modulus of Elasticity of Orthodontic Wires
Journal of Dental Research, July 1, 1983; 62(7): 856 - 858.
[Abstract] [PDF]

This Article
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