Hosseinzadeh Nik Tahereh, Hooshmand Tabassom, Farhadifard Homa
Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Associate Professor, Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
J Dent (Tehran). 2017 Sep;14(5):275-281.
The purpose of this study was to investigate the effect of different types of toothpaste on the frictional resistance between stainless steel brackets and archwires.
Ninety stainless steel orthodontic brackets with stainless steel wires were bonded to bovine teeth and were divided into 6 groups for application of the following toothpastes: Colgate® Total® Advanced Whitening, Colgate® Total® Pro Gum Health, Colgate® Anticavity, Ortho.Kin®, and Sunstar GUM® Ortho toothpastes. No toothpaste was applied in the control group. Each group was brushed by a brushing machine with the use of the designated solution for 4.5 minutes. The frictional force was measured in a universal testing machine with a crosshead speed of 10 mm/minute over a 5-mm archwire. Data were analyzed using one-way analysis of variance (ANOVA) at the 0.05 significance level.
The frictional resistance values of Ortho.Kin® and GUM® Ortho toothpastes and the control group were not significantly different (P>0.05). However, there were significant differences between the frictional resistance values of Colgate® Total® Pro Gum Health and Colgate® Anticavity toothpastes with that of the control group (P<0.05). The highest and lowest frictional resistance values were related to Colgate® Total® Pro Gum Health toothpaste and the control group, respectively.
Among the evaluated toothpastes, the orthodontic toothpastes did not increase the frictional resistance between the orthodontic stainless steel brackets and wires.
本研究旨在调查不同类型牙膏对不锈钢托槽与弓丝之间摩擦力的影响。
将90个带有不锈钢丝的不锈钢正畸托槽粘结到牛牙上，并分为6组，分别使用以下牙膏：高露洁®全效®进阶美白牙膏、高露洁®全效®专业护龈牙膏、高露洁®防蛀牙膏、正畸健齿宝®牙膏和Sunstar GUM®正畸牙膏。对照组不使用牙膏。每组使用指定溶液通过刷牙机刷牙4.5分钟。在万能试验机上以10毫米/分钟的十字头速度在5毫米弓丝上测量摩擦力。在0.05显著性水平下使用单因素方差分析（ANOVA）对数据进行分析。
正畸健齿宝®牙膏和GUM®正畸牙膏组以及对照组的摩擦阻力值无显著差异（P>0.05）。然而，高露洁®全效®专业护龈牙膏和高露洁®防蛀牙膏的摩擦阻力值与对照组之间存在显著差异（P<0.05）。最高和最低摩擦阻力值分别与高露洁®全效®专业护龈牙膏和对照组相关。
在所评估的牙膏中，正畸牙膏不会增加正畸不锈钢托槽与弓丝之间的摩擦阻力。
