대한치과교정학회지 (The korean journal of orthodontics)
- 제15권2호
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- Pages.163-174
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- 1985
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
교정용 스테인리스강선재의 물리적 성질에 관한 비교연구
A COMPARATIVE STUDY ON PHYSICAL PROPERTIES OF ORTHODONTIC STAINLESS STEEL WIRES
- Kwon, Oh-Won (Department of Dental Science, Yonsei University) ;
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Sohn, Byung-Hwn
(Department of Dental Science, Yonsei University)
- 발행 : 1985.09.01
초록
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 wire and manufactured E.S.S. (Experimental Stainless Steel) wire similar to 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 flexuree 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.
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