Finite Element Evaluation Of Tip And Torque In Three Different Conventional And Self-Ligating Orthodontic Brackets

Abstract

This study aimed to evaluate tip and torque expression in three conventional pre-adjusted edgewise brackets and three self-ligating brackets using finite element analysis (FEA). The assessment involved enagement of 0.021×0.025” SS wires for tip and torque analysis.

Three conventional brackets (3M Unitek Gemini, Mini Master – American Orthodontics, Mini Diamond Twin – Ormco) and three self-ligating brackets (3M Smartclip, Empower 2 –American Orthodontics, Damon Q – Ormco) for permanent maxillary right central incisor, lateral incisor, and canine were analyzed. Precise digital models were created, and FEA was conducted to simulate wire engagement and stress response.

Conventional brackets showed tip and torque values closer to ideal especially under stiffer wire engagement & Self-ligating brackets exhibited larger deviations from normal tip and torque values.

It was concluded that Empower 2 and 3M Smartclip self-ligating brackets performed better in enhancing torque control when compared to standard values. However, 3M Unitek Gemini conventional brackets showed more predictable tip and torque expression.