Abstract: By reviewing the literature on the application of three-dimensional finite element in orthodontics over the years, the paper analyzes the construction and transformation of three-dimensional finite element model, data processing and clinical application in orthodontic biomechanics. The results of literature review show that three-dimensional finite element analysis has its clinical application value in fixed correction, functional correction and invisible correction. It has unique advantages and good application prospect in simulating tooth movement and skeletal reconstruction. However, the current three-dimensional finite element analysis still has some limitations. More targeted medical research and exploration are needed in three-dimensional finite element analysis.

Key words: finite element analysis, orthodontic appliance, biomechanics, fixed appliance, functional appliance, jaw, dentition, temporomandibular joint

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