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| 不锈钢方丝弹性值对摩擦力影响的实验研究 | |
| 引用本文： | 张敏,侯录,徐实谦. 不锈钢方丝弹性值对摩擦力影响的实验研究[J]. 口腔医学, 2012, 32(1): 36-38,47 |
| 作者姓名： | 张敏 侯录 徐实谦 |
| 作者单位： | 1. 黑龙江省牡丹江市第二人民医院口腔科,牡丹江,150086 2. 哈尔滨医科大学第二临床医学院口腔正畸科,哈尔滨,150086 3. 哈尔滨工业大学,哈尔滨,150006 |
| 摘 要： | [摘要] 目的 探讨正畸用不锈钢丝进行不同温度热处理后,对弓丝与托槽间摩擦力的影响。方法 对正畸用不锈钢方丝分成A、B、C、D四组进行不同温度的热处理,分别测试六翼托槽与不同热处理温度的不锈钢方丝在弹力结扎圈结扎方式下的摩擦力大小。结果 520℃度组与任意一组比较摩擦力测试结果有统计学差异(P<0.05),而360℃,440℃和未经热处理间差别均无统计学意义;经过加热处理后,弓丝热处理温度为520℃度时弓丝弹性模数最大,弓丝回弹小。结论 弹性模数的增加导致方丝回弹性降低是引起摩擦力测试值存在差异的一个主要因素;经360℃、440℃热处理的不锈钢方丝,有利于托槽沿弓丝滑动,适于关闭间隙阶段;经520℃热处理,利于精细调整阶段的牙齿移动,对临床应用有一定的参考意义。 |
| 关 键 词： | [关键词] 方弓丝 热处理 回弹性 摩擦力 |
Experimental study of effects of elasticity of orthodontic archwire on the friction |
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| ZHANG Min , HOU Lu , XU Shi-qian. Experimental study of effects of elasticity of orthodontic archwire on the friction[J]. Stomatology, 2012, 32(1): 36-38,47 | |
| Authors: | ZHANG Min HOU Lu XU Shi-qian |
| Affiliation: | .(Department of Stomatology,The Second People’s Hospital,Mudanjiang City,Heilongjiang Province) |
| Abstract: | Objective To discuss the influence of the orthodontic stainless steel archwires after heat treatment under different temperature on friction between the archwires and brackets.Methods The rectangular stainless steel archwires which had been treated under different temperatures(non-heating treatment;heat treatment;temperature 360℃;heat treatment;temperature 440℃;heat treatment:temperature 520℃) were divided into quadruplet A,B,C,D.Measure the friction of six-wing brackets and archwires which had been treated under different temperatures by the elasticity ligated method.Results There was statistical significance of differences of friction test results between 520℃group and any other group.There wasn’t statistical signifcance of differences among nonheating treatment group,360℃group and 440℃group.In heat treatment the elasticity modulus of the archwive reached the maximum while the resilience reached the minimum,when the temperature was 520℃.Conclusions The increase of modulus of elasticity of orthodontic stainless steel archwire causes low rebound,which is one of the main factors that cause different frictional test values;the stainless steel archwire treated under 440℃and 360℃can be applied in the process of space closure;and the stainless steel archwire treated under 520℃can be applied in moving teeth to a certain position precisely,which can provide some references for its clinical application. |
| Keywords: | archwire heat treatment elasticity friction |
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