A comparative study on physical properties of orthodontic stainless steel wires.
- Author:
Oh Won KWON
1
;
Byung Hwa SOHN
Author Information
1. Department of Dental Science, Yonsei Unicersity, Korea.
- Publication Type:Comparative Study ; Original Article
- MeSH:
Edible Grain;
Corrosion;
Elastic Modulus;
Elasticity;
Hot Temperature;
Orthodontic Wires;
Stainless Steel*;
Tensile Strength
- From:Korean Journal of Orthodontics
1985;15(2):163-174
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The requirements of orthodontic wire should include chemical stability, non-discoloration and non-corrosion in oral environment. Ability to be soldered, ease of fabrication and elasticity should be also considered. The purpose of this study was to compare and analyze the physical properties of Tru-chrome. The results were as follows: 1. Tru-chrome wire and E.S.S. wire were SUS 304 which was 18 Cr-8Ni austenite stainless steel. There was not significant difference in each composition between two wires. 2. There were not significant differences in ultimate tensile strength, yield strength, elongation and modulus of elasticity between Tru-chrome and E.S.S. wires. 3. There was not significant difference between flexure modulus of elasticity of Tru-chrome and E.S.S. wires. 4. Micro-hardness value of E.S.S. wire was more than that of Tru-chrome wire and they were softened significantly by solution heat reatment. 5. Micro-structure of Tru-chrome and E.S.S, wires showed fibrous interlocking grains, and an austenite structure after solution heat treatment. 6. There was significant difference between corrosion rate of Tru-chrome and E.S.S wires.
