Comparison of torque expression among passive self-ligating brackets with different slot depths: An in vitro study

IF 1.8 Q2 DENTISTRY, ORAL SURGERY & MEDICINE International Orthodontics Pub Date : 2024-03-12 DOI:10.1016/j.ortho.2024.100866

Patrick Cavallini Saraiva , Murilo Henrique Cruz , Igor Studart Medeiros , Jefferson Vinicius Bozelli , José Rino Neto , João Batista de Paiva

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Abstract

Introduction

The aim of this study was to assess the interaction between a 0.019 × 0.025-inch (″) stainless steel archwire and two types of passive self-ligating brackets with the same slot height (0.022″) and different slot depths (0.028″ and 0.026″, and to measure the archwire/slot play as well as to compare the torque expression with archwire torsions of 12°, 24°, and 36°.

Material and methods

An experimental device was developed along with a universal testing machine to measure torque expression in two types of brackets with 0.028″ and 0.026″ slot depths. Analysis of variance (ANOVA) and Tukey's test were performed to identify the differences between groups.

Results

The 0.026″ slot bracket presented greater archwire/slot play when compared to the 0.028″ bracket. Torque expression with torsions of 24° and 36° were significantly higher in the 0.028″ depth brackets when compared to the 0.026″ depth brackets.

Conclusion

The 0.022″ × 0.026″ passive self-ligating brackets attached with a 0.019″ × 0.025″ stainless steel archwire provided no greater torque control when compared to 0.022″ × 0.028″ passive self-ligating brackets.

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比较不同槽深的被动式自锁托槽的扭矩表达：体外研究

引言本研究的目的是评估 0.019 × 0.025 英寸（″）不锈钢弓丝与两种具有相同槽高（0.022″）和不同槽深（0.028″和 0.026″）的被动式自锁托槽之间的相互作用，并测量弓丝/槽的游隙以及比较弓丝扭转 12°、24° 和 36°时的扭矩表达。材料和方法开发了一个实验装置和一台万能试验机，用于测量槽深分别为 0.028″ 和 0.026″ 的两种托槽的扭矩表现。结果 0.026″ 插槽托槽与 0.028″ 托槽相比，弓丝/插槽间隙更大。结论与 0.022″ × 0.028″ 被动式自锁托槽相比，0.022″ × 0.026″ 被动式自锁托槽与 0.019″ × 0.025″ 不锈钢弓丝连接时的扭矩控制并没有更好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.