Effect of increasing the vertical intrusive force to obtain torque control in lingual orthodontics: A three-dimensional finite element method study

Abstract

Forces that produce a translation in LaO tends to produce uncontrolled tipping in lingual technique. To obtain adequate torque control in lingual technique, a combination of the reduction in horizontal retraction forces, increased lingual root torque application, and increase in vertical intrusive forces is desirable.

A Three-Dimensional Finite Element Analysis: Maxillary Dentition Distalization with the Aid of Microimplant in Lingual Orthodontics

“…This is roughly consistent with the results of previous studies. 5,15,16 Some scholars have also conducted research on the position of the traction hook. Through finite element analysis, Feng believes that the traction hook placed in the distal canine is not conducive to the control of the anterior torque and the width of the dental arch.…”

Torque Control During Intrusion on Upper Central Incisor in Labial and Lingual bracket System - A 3D Finite Element Study

“…Intrusive forces act differently in both techniques because of the different location of force vectors in relation to the centre of resistance ( 12 ). Increasing the vertical intrusive force is one of the methods routinely used to prevent the uncontrolled tipping and obtain bodily type of movement in labial orthodontics (LaO) ( 13 ).…”