書誌事項
- タイトル別名
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- Evaluation of super-elasticity characteristics of orthodontic Ni-Ti alloy wire.
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Mechanical properties of orthodontic Ni-Ti alloy wires, especially their super-elasticity characteristics, were investigated in order to use them effectively in the clinics. In this study, twenty commercial orthodontic Ni-Ti wires were tested and two parameters were devised for the load-deflection curve and introduced to evaluate the practical mechanical properties, one being the “super-elastic index : SET” for super-elasticity, and the other being the “E-load” for the load in the super-elastic region.<BR>There was a “flat area” in the load-deflection curve of the super-elastic type of Ni-Ti alloy wires, whose SET was above seventy and a continuous force could be used through the wide range of deflection. The load of the work-hardened type of Ni-Ti wires, SET below thirty, was nearly proportional to the deflection. And the middle type showed intermediate properties of the two. The E-load values of the super-elastic type wires are thought to indicate the load level in the super-elastic region. The quantitative evaluation of the super-elasticity characteristics of the orthodontic Ni-Ti wires became possible by the introduction of these parameters.
収録刊行物
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- 口腔病学会雑誌
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口腔病学会雑誌 56 (1), 93-101, 1989
口腔病学会