A Stereo-Microscopic Study: In-Built Torque Comparison using MBT Prescription Brackets of Different Companies

Abstract

Torsion in an "archwire" that forms a pair when it interacts with a "bracket slot" produces torque. The archwire moves the tooth through the torsional tension created in the activated state, depending on the degree of torsion, the size and quality of the wire, and the deformability of the bracket. The dimensions of the bracket hole may unintentionally vary when brackets are made. Therefore, the purpose of this study was to evaluate the accuracy of built-in torque from various manufacturers.  Objective:- To measure and analyse the built-in torque of the maxillary right canine brackets, maxillary right lateral canines, and maxillary right central incisors from commercially available bracket systems (JJ Orthodontics, American Orthodontics, Koden Orthodontics, Desires - Ozone series). The brackets will be measured in 0.022 inches.  Material and Method:- The sample was made up of three brackets from each company (maxillary central incisor, lateral incisor, and canine), the torque of which was measured in a dimension of 0.022 inches. Using a stereomicroscope, images were captured, measurements were made following operator calibration with IMAGE PROPLUS, and a digital readout was generated.  Results:- In practically every bracket, the built-in torque mean values were lower. The built-in torque levels were most similar to the American Orthodontics standard values.