Razavi Elham-Sadat Emadian, Nik Tahereh Hosseinzadeh, Hooshmand Tabassom, Farazdaghi Habibeh, Arefi Arian Hesam
Orthodontist, Private Practice, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Department of Orthodontics, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Dent Res J (Isfahan). 2021 Apr 6;18:21. eCollection 2021.
The aim of this study was to compare the effect of chlorhexidine- and Persica-containing mouthrinses on the surface characterization of orthodontic appliance and friction between the orthodontic stainless steel wires and brackets.
In this randomized controlled trial, 75 orthodontic patients (aged 13-30) were allocated ( = 25) into two experimental groups (prescribed by Persica- or chlorhexidine-containing mouthrinse) and one control group (no prescription). The ovoid stainless steel archwires were placed, and the maxillary first premolar stainless steel edgewise brackets were ligated to wires by elastomeric rings. The patients were recalled after 2 weeks, and then, the archwires were removed and replaced. The surface analysis of archwires and brackets was evaluated using scanning electron microscopy and atomic force microscopy. The frictional forces between the archwires and brackets were measured using a universal testing machine. The data for surface roughness were analyzed by the nonparametric Kruskal-Wallis and Mann-Whitney tests. The frictional forces data were analyzed using a two-way analysis of variance and Tukey's test using SPSS software. The level of significance was < 0.05.
The retrieved brackets showed minor changes in their surface topography. The surface roughness of archwires after the intervention was significantly greater for the chlorhexidine than that of Persica ( < 0.05). The friction force between the archwires and brackets was also significantly higher for the chlorhexidine than that of Persica ( < 0.05).
The Persica-containing mouthrinse from the biomechanical and biochemical standpoints may be a better option for oral hygiene in orthodontic patients compared with the chlorhexidine.
本研究旨在比较含氯己定和含波斯菊的漱口水对正畸矫治器表面特性以及正畸不锈钢丝与托槽之间摩擦力的影响。
在这项随机对照试验中，75名正畸患者（年龄13 - 30岁）被分为（每组n = 25）两个试验组（分别使用含波斯菊或氯己定的漱口水）和一个对照组（不使用漱口水）。放置卵形不锈钢弓丝，用上颌第一前磨牙不锈钢方丝弓托槽通过弹力圈结扎到弓丝上。2周后召回患者，然后取下并更换弓丝。使用扫描电子显微镜和原子力显微镜评估弓丝和托槽的表面分析。使用万能试验机测量弓丝与托槽之间的摩擦力。表面粗糙度数据通过非参数Kruskal - Wallis和Mann - Whitney检验进行分析。摩擦力数据使用SPSS软件进行双向方差分析和Tukey检验。显著性水平为P < 0.05。
回收的托槽表面形貌有轻微变化。干预后，氯己定组弓丝的表面粗糙度显著高于波斯菊组（P < 0.05）。氯己定组弓丝与托槽之间的摩擦力也显著高于波斯菊组（P < 0.05）。
从生物力学和生物化学角度来看，与氯己定相比，含波斯菊的漱口水可能是正畸患者口腔卫生的更好选择。
