Comparative evaluation of frictional characteristics between nano coated and non coated orthodontic brackets and arch wire configuration-An experimental in vitro study.

Q2 Dentistry

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI:10.4103/jos.jos_47_23

M Hemanth, S W Afshan, B Alif Ahmed, J P Darsan, M Aravind, M P Suchitra

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Abstract

Objective: To compare and assess the coefficient of frictional resistance between nano-coated orthodontic brackets and orthodontic archwires with conventional orthodontic brackets and archwires.

Methodology: In this experimental study, 128 samples were divided into 4 groups consisting of 32 orthodontic wires and brackets in each group. The samples were randomly allocated into GROUP A- ZNO nanoparticle coated archwires and brackets, GROUP B ZNO nanoparticle coated bracket and conventional archwire, GROUP C-ZNO nanoparticle coated archwire and conventional bracket, and GROUP D- conventional archwire and bracket after positioning them on special jigs frictional resistance was studied and evaluated. Bon - Ferroni test was used for inter group comparison and one way ANOVA was used for intr-group comparison.

Results: The lowest mean frictional resistance is seen with Group A (nanocoated archwire with nanocoated bracket) N = 0.3401 ± 0.420; and highest with Group D (conventional brackets with conventional archwires) N = 0.8413 ± 0.60. a significant difference in mean frictional resistance was observed between the groups (P ≤ 0.01). The frictional resistance for the groups was in the following order from lowest to highest: group A < B < C < D.

Conclusion: The study showed decreased friction in ZNO nanoparticle coated archwires and brackets than conventional archwires and brackets.

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纳米涂层和非涂层正畸托槽与弓丝结构摩擦特性的比较评价一项体外实验研究。

目的：比较和评价纳米涂层正畸托槽和正畸弓丝与传统正畸托槽和弓丝的摩擦阻力系数。方法：在本实验研究中，128个样本被分为4组，每组32根正畸线和托槽。将样品随机分为A组-ZNO纳米粒子涂层弓丝和托槽、B组-ZNO纳米粒子涂层托槽和常规弓丝、C组-ZN0纳米粒子涂层弓线和常规托槽以及D组-常规弓丝和支架，并将其放置在专用夹具上后对摩擦阻力进行研究和评估。Bon-Ferroni检验用于组间比较，单向方差分析用于组内比较。结果：A组（含纳米涂层托槽的纳米涂层弓丝）的平均摩擦阻力最低，N=0.3401±0.420；以D组（传统弓丝托槽）为最高，N=0.8413±0.60。两组的平均摩擦阻力从低到高依次为：a组＜B组＜C组＜D组。

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