FINITE ELEMENT ANALYSIS OF RECTANGULAR WIRES FOR THE ALIGNMENT OF THE CURVE OF SPEE

Abstract

This study aims to assess and compare the performance of different rectangular wires in the alignment of the Curve of Spee using finite element analysis. By analyzing stress distribution and tooth deformation, the study provides valuable insights into the biomechanical aspects of Curve of Spee alignment, aiding orthodontic treatment planning. Materials and Methods: MIMICS software facilitated model design, while Ansys 19.0 performed geometric model simulations. CAD/CAM technology constructed models of mandibular teeth, periodontal ligament, alveolar bone, buccal tubes, brackets, and archwires. Mechanical elastic properties were assigned based on Young's Modulus and Poisson's ratio. Results: Finite element analysis enabled the evaluation of stress distribution and tooth deformation. Six different rectangular archwires (0.016" x 0.022" NiTi, TMA, and stainless steel wires, and 0.019" x 0.025" NiTi, TMA, and stainless steel wires) were assessed for incremental displacement and alignment of the Curve of Spee. Force values and tooth deformations were recorded and presented in tables and figures. Conclusion: Selecting appropriate archwire dimensions is essential for effectively aligning the Curve of Spee. Larger dimension archwires, such as the 0.019" x 0.025" stainless steel wire, may be advantageous in correcting deeper Curves of Spee. Further research and clinical studies are needed to validate these findings and consider additional factors influencing treatment outcomes.