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首页> 外文期刊>American Journal of Orthodontics and Dentofacial Orthopedics >Evaluation of friction of stainless steel and esthetic self-ligating brackets in various bracket-archwire combinations.
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Evaluation of friction of stainless steel and esthetic self-ligating brackets in various bracket-archwire combinations.

机译：评估各种支架-弓丝组合中的不锈钢和美观的自锁支架的摩擦力。

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摘要

This study measured and compared the level of frictional resistance generated between stainless steel self-ligating brackets (Damon SL II, SDS Ormco, Glendora, Calif), polycarbonate self-ligating brackets (Oyster, Gestenco International, Gothenburg, Sweden), and conventional stainless steel brackets (Victory Series, 3M Unitek, Monrovia, Calif), and 3 different orthodontic wire alloys: stainless steel (Stainless Steel, SDS Ormco), nickel-titanium (Ni-Ti, SDS Ormco), and beta-titanium (TMA, SDS Ormco). All brackets had a.022-in slot, whereas the orthodontic wire alloys were tested in 3 different sections:.016,.017 x.025, and.019 x 0.025 in. Each of the 27 bracket and archwire combinations was tested 10 times, and each test was performed with a new bracket-wire sample. Both static and kinetic friction were measured on a custom-designed apparatus. All data were statistically analyzed (Kruskal-Wallis and Mann Whitney U tests). Stainless steel self-ligating brackets generated significantly lower static and kinetic frictional forces than both conventional stainless steel and polycarbonate self-ligating brackets, which showed no significant differences between them. Beta-titanium archwires had higher frictional resistances than stainless steel and nickel-titanium archwires. No significant differences were found between stainless steel and nickel-titanium archwires. All brackets showed higher static and kinetic frictional forces as the wire size increased.
机译：这项研究测量并比较了不锈钢自动绑扎支架（Damon SL II，SDS Ormco，Glendora，加利福尼亚），聚碳酸酯自动绑扎支架（Oyster，Gestenco International，哥德堡，瑞典）和常规不锈钢之间产生的摩擦阻力水平。钢支架（胜利系列，3M Unitek，蒙罗维亚，加利福尼亚）和3种不同的正畸丝合金：不锈钢（不锈钢，SDS Ormco），镍钛合金（Ni-Ti，SDS Ormco）和β-钛合金（TMA， SDS Ormco）。所有托架都有一个.022英寸的槽，而正畸线合金在3个不同的部分中进行了测试：0.016、0.017 x.025和.019 x 0.025英寸。27个托架和弓丝组合中的每一个均测试了10次，并且每个测试均使用新的支架线样品进行。静摩擦和动摩擦都在定制设计的设备上测量。对所有数据进行统计分析（Kruskal-Wallis和Mann Whitney U检验）。与传统的不锈钢和聚碳酸酯自锁托板相比，不锈钢自锁托板产生的静摩擦力和动摩擦力明显更低，两者之间没有显着差异。 β-钛弓丝比不锈钢和镍-钛弓丝具有更高的摩擦阻力。不锈钢和镍钛弓丝之间没有发现显着差异。随着线径的增加，所有支架均显示出较高的静摩擦力和动摩擦力。

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