Study On Orthodontic Alveolar Bone Reconstruction Model And Acceleration Device Under Vibration

Malocclusion,one of the three major oral diseases,is harmful to human health.It is usually manifested by abnormal tooth alignment and maxillofacial abnormalities.Orthodontic treatment can move the affected tooth to the target position,which is the main treatment method for malocclusion.However,orthodontic treatment also has the disadvantage of long treatment period,resulting in poor treatment compliance of patients.External vibration of orthodontic teeth is an effective method to shorten the treatment period,but it is difficult for doctors to predict the therapeutic effect in this process.For patients,the accuracy and efficiency of vibration-accelerated orthodontics cannot be guaranteed.To explore the influence of vibration on the orthodontic treatment process,this study from the vibration load effect on the mechanism of alveolar bone reconstruction process,under the action of the activity combination load stress is analyzed,and then under the action of the vibration orthodontic alveolar bone reconstruction model and orthodontic accelerator research,to improve the efficiency and predictability of acceleration in the process of orthodontic treatment has very important significance.This paper carries out the following research on the existing problems.Mimics medical 21.0,Geomagic Studio 2017 and Solidworks 2019 were applied to perform 3D reconstruction,surface treatment and component assembly on the patient’s oral CBCT images,and a 3D model of the jaw bone including the patient’s first six affected teeth,cancellous and cortical bone of the alveolar bone and periodontal tissues was established to ensure that the model was similar to the The simulations were carried out by applying occlusal forces to the teeth,and the four stress areas of the alveolar bone were used as observation targets.The simulation results were compared with the experimental results of related researchers to verify the validity of the constructed maxillary model.Based on the established maxillary 3D model,the vibration of orthodontic teeth was simulated by applying dynamic and static loads on the orthodontic teeth.The mechanism of acceleration of orthodontic tooth movement by vibration loads was verified by finite element simulation from the Angle of damage.The combined dynamic and static loads were applied on the lip surface,tongue surface and occlusal surface respectively,and the feasibility of the three vibration modes for accelerating orthodontics was verified.By comparing the displacement distance of orthodontic teeth subjected to dynamic and static loads on different surfaces with that subjected only to static orthodontic forces,the best way to apply vibration loads was determined.According to the mechanism of the vibration on alveolar bone,from the aspect of alveolar bone of the bone cells to understand alveolar bone reconstruction process,through understanding the mechanics characteristics of alveolar bone tissue and the mechanical regulation mechanism,in the form of fatigue damage in the process of alveolar bone reconstruction join vibration factors,combined with Wolff law of alveolar bone damage control model is established and expressed as damage variable I,It was introduced into the alveolar bone reconstruction model,and the alveolar bone reconstruction model under vibration loading was established.Through the secondary development of ANSYS program,the reconstruction process of alveolar bone under vibration was simulated,and the changes of internal tissue parameters of alveolar bone were analyzed after the vibration load of fixed frequency was applied in a certain period of time.Combined with the research results of the optimal application mode of vibration and the effect of vibration on alveolar bone tissue,the design mode of vibration end of the orthodontic accelerator was determined,and the vibration generation module,amplitude regulation module and other modules were designed by analyzing the functional requirements of the orthodontic accelerator.ANSYS Workbench was used for modal analysis of the whole machine and fatigue life analysis of the parts prone to fatigue damage.According to the functional requirements of the design of the corresponding circuit,the design of the overall PCB and the structure of the device prototype.