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응력 제거 열처리 조건에 따른 교정용 스테인리스강 선재의 이온 용출 특성

Other Titles
 In Vitro ion Release Property of Orthodontic Stainless Steels According to Stress Relief Heat Treatment Conditions 
Authors
 오근택  ;  신자영  ;  황충주  ;  김경남 
Citation
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.29(2) : 117-127, 2002 
Journal Title
Journal of the Korean Research Society for Dental Materials(대한치과기재학회지)
ISSN
 1225-1631 
Issue Date
2002
Keywords
orthodontic stainless steel wire ; stress relief heat treatment ; nickel ion release ; cytotoxicity
Abstract
Heat treatment is applied to orthodontic stainless steel wires in order to relieve the stresses that result from the manipulation by orthodontists. The quality and the thickness of the oxide films formed on the surface of the heat-treated wires may be various and it is considered that the oxide films can influence on the properties of the heat-treated wires. The purpose of this study was to investigate the influence of the heat-treating conditions and cooling methods on the amount of metal ion release and cytotoxicity of the heat-treated wires.

In this study, 4 types of stainless steel wires(Remanium, Permachrome, Colboloy and Orthos) in 0.41×0.56 ㎜ were selected for the experiments. These wires were heat-treated in vacuum, air, argon environment and were either cooled in a furnace or a water bath. Four control groups and 24 experimental groups were divided according to wires, heat-treating conditions and cooling methods. In each group, the amount of nickel ion release and cytotoxicity were investigated. The amount of nickel ion release in artificial saliva was measured for up to 12 weeks.

In all groups, the amount of nickel ion release was lowest in the vaccum heat treatment-furnace cooling group and significant difference was shown compared with other experimental groups. The amount of nickel ion release was highest in the groups which were heat-treated in the air and significant difference was shown(p<0.05). The amount of nickel ion release was highest in Remanium & Colboloy and significant difference was shown(p<0.05). Cytotoxicity was mild in the experimental groups but the response index of the air groups was a little higher than other groups.

According to these results, stainless steel wires keep high corrosion resistances and low ion release rate when heat-treated in the vaccum and cooled in a furnace.
Full Text
http://www.dbpia.co.kr/Article/3402379
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Hwang, Chung Ju(황충주) ORCID logo https://orcid.org/0000-0003-3024-4551
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/144292
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