The Finite Element Method was introduced in orthodontics as a powerful computational tool for analyzing the biomechanical effects of various treatment modalities and is an approximation method to represent both the deformation and the 3D stress distribution in bodies that are exposed to stress. By constructing detailed models of teeth, periodontal ligaments, and surrounding bone, FEM enables the simulation of stress and strain distributions resulting from various orthodontic forces. This methodology enhances the understanding of tooth movement mechanics, aiding in the optimization of treatment strategies and appliance designs. The article explores the principles of FEM, its applications in orthodontics, and its potential to revolutionize patient care through evidence-based decision-making.