Biomechanics-based Visualization Of Digital Twin In Orthodontics

Nowadays,the incidence of malocclusion among children and adolescents in China has reached 67.82%.Deformed teeth significantly affect the expression of emotion and hinder the operation of oral functions,including chewing,swallowing,and other functions.However,there are many reasons for tooth malocclusion.Therefore,with the advancement of living standards and increasing attention to health considerations,more and more people use orthodontics to obtain regular tooth function and improve glamour.The traditional orthodontic treatment period is so extended that patients must go back and forth to the hospital frequently to adjust the appliance.This process cannot predict the treatment results in advance,which requires the patient’s active cooperation attitude.Currently,Digital Twin technologies have been widely accepted by enterprises,academia,and government departments.In the medical profession,Digital Twin is used to simulate organs and the human body,which is the solution to detecting and improving human health to detect and improve human health.Hence,orthodontics based on Digital Twin can reproduce the oral model of the physical world and visualize the results of orthodontics in the digital world,which provides a reference for the personalized diagnosis and treatment of therapists.Through this process,patients’ enthusiasm for orthodontic treatment will be enhanced,thus further promoting the intellectual and digital development of orthodontics.In this work,we address the process of orthodontic visualization based on biomechanics and Digital Twin.According to Finite Element Analysis,the boundary conditions of Fixed Boundary and Minimum Total Potential Energy Principle are involved to visualize the results of orthodontic treatment from the perspectives of displacement and stress,which vividly demonstrates the application of biomechanics in orthodontics.Furthermore,the process of orthodontic visualization is a closed circuit that interacts between the digital world and the real world.The visualization process of orthodontics in Digital Twin begins from the real world,taking the actual CBCT slice data of the middle and lower segments of the patient’s head as a starting point.Firstly,we separate the teeth,maxilla,and mandible individually from the CBCT data as the oral model used in this paper.It is worth affirming that the oral model’s primary structure and position information remains unaffected throughout the process.At this time,the conversion from the real world to the digital world is completed with the oral model input visualization process.In the digital world,according to the fact that the boundaries of the maxilla and mandible are fixed and that the root of the tooth does not slide relative to the jawbone during orthodontic treatment,we employ Finite Element Analysis to calculate and simulate the outcomes of orthodontics.Moreover,the boundary conditions of Fixed Boundary and Minimum Total Potential Energy Principle are involved.In addition,we added a virtual square wire appliance to the original oral model and used B-spline to fit the sample points to simulate the curve connected by the wire arch.Finally,the finite element method calculates and simulates the tooth displacement during orthodontic treatment.In the experimental part,the strength of orthodontic force,mesh accuracy,and calculation time are balanced through quantitative grouping experiments,and the best data is output as the result of orthodontic treatment.The results of orthodontics work in the real world to guide the diagnosis and treatment,and a closed loop is completed at this time.Furthermore,based on Digital Twin,we can reposition the square wire appliance and repeat the experiment to achieve the expected outcomes of orthodontics.In this paper,assuming the oral model as the pre-orthodontic,the experimental results indicate that the density of grid division in the digital world will impact the precision of the results,but corrective forces applied will directly affect the effectiveness of orthodontics.By corrective force,the state of the teeth will be adjusted.After orthodontics,the oral system is more beautiful,stable,and balanced.In the real world,the fabrication of appliances and the treatment arrangement can be determined according to the experimental results.