Torsional Elastic Property Measurements of Selected Orthodontic Archwires.

Abstract

A method for quantifying the torsional elastic properties of orthodontic archwires was investigated. Three wire sizes (.018 inch, .017 inch x.025, and .019inch x.025) were tested for three different alloys: stainless steel S.S., beta titanium B-Ti, and nickel-titanium Ni-Ti. The shear modulus (G) was determined dynamically using a torsion pendulum. The torsional yield strength (Tys) was determined using a static torsion test that generated torque (T) versus angular deflection (phi) tracings. The three basic torsional elastic properties (strength, stiffness, and range) were calculated for each of the wires from G, Tys, and precise dimensional data. The Ni-Ti wire had the greatest range and the least stiffness. S.S. archwire showed the greatest stiffness and the least range. The properties of B-Ti fell

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1987
Accession Number
ADA185669

Entities

People

  • Brent E. Larson

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Elastic Properties
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Modulus Of Elasticity
  • Physical Properties
  • Shear Modulus
  • Shear Stresses
  • Stainless Steel
  • Stiffness
  • Teeth
  • Tensile Strength
  • Test Methods
  • Titanium
  • Yield Strength

Readers

  • Metallurgy
  • Powder metallurgy of Titanium alloys.
  • Structural Dynamics.