不同槽深的被动自锁托槽转矩表达的比较：一项体外研究。
Comparison of torque expression among passive self-ligating brackets with different slot depths: An in vitro study.
作者信息
Saraiva Patrick Cavallini, Cruz Murilo Henrique, Medeiros Igor Studart, Bozelli Jefferson Vinicius, Neto José Rino, Paiva João Batista de
机构信息
Department of Orthodontics, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil.
Department of Orthodontics, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil.
出版信息
Int Orthod. 2024 Jun;22(2):100866. doi: 10.1016/j.ortho.2024.100866. Epub 2024 Mar 12.
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.
简介
本研究旨在评估 0.019×0.025 英寸（“）不锈钢弓丝与两种相同槽高（0.022”）但不同槽深（0.028”和 0.026”）的被动自锁托槽之间的相互作用，并测量弓丝/槽间隙，同时比较转矩表达与 12°、24°和 36°弓丝扭转。
材料与方法
开发了一种实验装置和万能试验机，以测量 0.028”和 0.026”槽深两种托槽的转矩表达。采用方差分析（ANOVA）和 Tukey 检验来确定组间差异。
结果
与 0.028”槽托槽相比，0.026”槽托槽的弓丝/槽间隙更大。与 0.026”槽托槽相比，0.028”槽托槽在 24°和 36°扭转载矩表达时明显更高。
结论
与 0.022”×0.028”被动自锁托槽相比，附接 0.019”×0.025”不锈钢弓丝的 0.022”×0.026”被动自锁托槽在转矩控制方面没有显著提高。
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