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Article: The properties of different orthodontic rectangular arch wires in torsion

TitleThe properties of different orthodontic rectangular arch wires in torsion
正畸方絲轉矩力的分析
Authors
KeywordsOrthodontics 正畸
Rectangular arch wire 方絲
Torsion 轉矩
Issue Date2008
PublisherSichuan Daxue, Huaxi Kouqiang Xueyuan. The Journal's web site is located at http://hxkqyxzz.periodicals.net.cn/
Citation
West China Journal of Stomatology, 2008, v. 26 n. 2, p. 152-155 How to Cite?
華西口腔醫學雜誌, 2008, v. 26 n. 2, p. 152-155 How to Cite?
AbstractOBJECTIVE: To study the properties of orthodontic rectangular arch wires in torsion. METHODS: By using the torsion measurement apparatus, torsion moments and angles of four kinds of orthodontic wires (0.46 mm x 0.63 mm and 0.48 mm x 0.63 mm stainless steel wires, and the same size nickel-titanium wires) were tested respectively in a 0.56 mm-slot first maxillary incisor bracket. According to the torsion moments and angles, scatter graphs were drawn to fit the load-deflection curves of four kinds of wires and their linear equations were calculated. According to the equations, the torsion stiffness and the play angles of the wires at 20 N mm correspondingly were calculated. RESULTS: The torsion stiffness of four kinds of wires were 4.909, 6.417, 1.325 and 1.363 N mn/degrees, the torsion angles of different wires were 19.14 degrees, 15.33 degrees, 36.83 degrees and 35.07 degrees at 20 N mm respectively. CONCLUSION: The torsion stiffness of stainless steel wires was bigger than that of the same cross-section dimensional nickel-titanium wires. The difference of torsion stiffness between two dimensional nickel-titanium wires is smaller, while the difference of torsion stiffness between two stainless steel wires is larger.
目的研究正畸方絲的轉矩力。方法運用自行研制的轉矩測量儀測量0.46mm×0.63mm、0.48mm×0.63mm不銹鋼方絲和相同截面尺寸的鎳鈦方絲在單個0.56mm槽溝的中切牙托槽內的轉矩力矩與轉矩角度;根據轉矩力矩與轉矩角度,使用SPSS11.0軟件制作散點圖,擬合出4種弓絲的負荷形變曲線,并據此建立直線回歸方程;根據方程得出弓絲的抗扭剛度及轉矩力矩為20N·mm時的轉矩角度。結果以上4種弓絲抗扭剛度分別為4.909、6.417、1.325、1.363N·mm/°,達到20N·mm轉矩力矩時的轉矩角度分別為19.14°、15.33°、36.83°、35.07°。結論相同截面尺寸不銹鋼方絲的抗扭剛度明顯大于鎳鈦方絲;兩種截面尺寸鎳鈦方絲的抗扭剛度相差很小,而不銹鋼方絲則相差較大。
Persistent Identifierhttp://hdl.handle.net/10722/196739
ISSN
2015 SCImago Journal Rankings: 0.121

 

DC FieldValueLanguage
dc.contributor.authorHuang, N-
dc.contributor.authorGu, M-
dc.contributor.authorHan, X-
dc.contributor.authorBai, D-
dc.date.accessioned2014-04-28T02:01:07Z-
dc.date.available2014-04-28T02:01:07Z-
dc.date.issued2008-
dc.identifier.citationWest China Journal of Stomatology, 2008, v. 26 n. 2, p. 152-155-
dc.identifier.citation華西口腔醫學雜誌, 2008, v. 26 n. 2, p. 152-155-
dc.identifier.issn1000-1182-
dc.identifier.urihttp://hdl.handle.net/10722/196739-
dc.description.abstractOBJECTIVE: To study the properties of orthodontic rectangular arch wires in torsion. METHODS: By using the torsion measurement apparatus, torsion moments and angles of four kinds of orthodontic wires (0.46 mm x 0.63 mm and 0.48 mm x 0.63 mm stainless steel wires, and the same size nickel-titanium wires) were tested respectively in a 0.56 mm-slot first maxillary incisor bracket. According to the torsion moments and angles, scatter graphs were drawn to fit the load-deflection curves of four kinds of wires and their linear equations were calculated. According to the equations, the torsion stiffness and the play angles of the wires at 20 N mm correspondingly were calculated. RESULTS: The torsion stiffness of four kinds of wires were 4.909, 6.417, 1.325 and 1.363 N mn/degrees, the torsion angles of different wires were 19.14 degrees, 15.33 degrees, 36.83 degrees and 35.07 degrees at 20 N mm respectively. CONCLUSION: The torsion stiffness of stainless steel wires was bigger than that of the same cross-section dimensional nickel-titanium wires. The difference of torsion stiffness between two dimensional nickel-titanium wires is smaller, while the difference of torsion stiffness between two stainless steel wires is larger.-
dc.description.abstract目的研究正畸方絲的轉矩力。方法運用自行研制的轉矩測量儀測量0.46mm×0.63mm、0.48mm×0.63mm不銹鋼方絲和相同截面尺寸的鎳鈦方絲在單個0.56mm槽溝的中切牙托槽內的轉矩力矩與轉矩角度;根據轉矩力矩與轉矩角度,使用SPSS11.0軟件制作散點圖,擬合出4種弓絲的負荷形變曲線,并據此建立直線回歸方程;根據方程得出弓絲的抗扭剛度及轉矩力矩為20N·mm時的轉矩角度。結果以上4種弓絲抗扭剛度分別為4.909、6.417、1.325、1.363N·mm/°,達到20N·mm轉矩力矩時的轉矩角度分別為19.14°、15.33°、36.83°、35.07°。結論相同截面尺寸不銹鋼方絲的抗扭剛度明顯大于鎳鈦方絲;兩種截面尺寸鎳鈦方絲的抗扭剛度相差很小,而不銹鋼方絲則相差較大。-
dc.languageeng-
dc.publisherSichuan Daxue, Huaxi Kouqiang Xueyuan. The Journal's web site is located at http://hxkqyxzz.periodicals.net.cn/-
dc.relation.ispartofWest China Journal of Stomatology-
dc.relation.ispartof華西口腔醫學雜誌-
dc.subjectOrthodontics 正畸-
dc.subjectRectangular arch wire 方絲-
dc.subjectTorsion 轉矩-
dc.titleThe properties of different orthodontic rectangular arch wires in torsionen_US
dc.title正畸方絲轉矩力的分析-
dc.typeArticleen_US
dc.identifier.emailGu, M: drgumin@hku.hk-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid18605452-
dc.identifier.volume26-
dc.identifier.issue2-
dc.identifier.spage152-
dc.identifier.epage155-
dc.publisher.placeChina-

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