Evaluation of Tie Wing Deformation in 0.022 Inch Stainless Steel Orthodontic Bracket - A Finite Element Analysis

摘要

Orthodontics is the field of dentistry, which deals with the misalignment (malocclusion) of teeth and its treatment for correcting the improper bite in the jaw. Orthodontic brackets are a component of fixed appliances that are used in orthodontics that aligns and rectifies the misalignment. Archwires are used to control the movement of teeth by giving load on the bracket, which transfers the force to the teeth. Since the nineteenth century, with the development of orthodontics, various models of brackets that varies in shape and size were invented. The response behaviour and the effect on the bracket for the load applied by the archwire varies for different shape and slot size. As a result, the deformation and stress evolved on the bracket varies. Thus, our study aims to find the tie wings deformation in a conventional orthodontic bracket. Archwire is made to rotate with different angles inside the slot of the bracket. In our methodology, the bracket and archwire assembly were modelled, meshed and finite element analysis (FEA) was done on the brackets to evaluate the tie wings deformation for the various angle of twist on the archwire as done in a clinical situation.