Abstract:

Modern orthodontic care is becoming available to a wider population. Today, the tools used by doctors in their work allow you to design orthodontic surgery and predict its consequences. Improving design and forecasting technologies is a key goal of the latest developments in this field of medicine. This work is based on the comparison of models of multilayer bone structures of the oral cavity and single-layer. This comparison will make it possible to assess the difference between the results of these models and the effectiveness of each of them. The aim of this work is to obtain a comparative model of the effectiveness of occlusion correction using vestibular braces, which will evaluate the application of multilayer and single-layer models in the design of orthodontic interventions. It is known that some designs allow you to solve only one problem - to move the teeth in only one specific direction; they can be called single-purpose. Other devices are more or less versatile and can be used to move teeth and change the shape of the jaw bones in different directions - they belong to the group of multi-purpose. Computer modeling makes it possible to see the stress distribution taking into account the anatomy and the corresponding devices allows you to better understand orthodontic biomechanics, allow you to more accurately describe the anatomy of the teeth. Although the associated transmission of force through the dentition during orthodontic treatment is often statically uncertain, these systems can be addressed by incorporating the principles of solid mechanics. Before installing braces, it is necessary to diagnose the patient to identify pathologies and establish the clinical picture. Diagnosis of CPCT (cone-beam computed tomography) is in high demand due to the speed of research and the low level of radiation exposure. CT in orthodontic diagnostics has a number of advantages: it reduces the time spent, the number of scans, the radiation dose and the cost of diagnosis. Blue Sky Plan and Orthodontics software were used to model the braces. To simulate the mechanical process of wearing braces, the files of teeth, jaws and braces were imported into the SolidWorks software environment. The multilayer model considers the mechanical properties of enamel, cancellous bone, dentin, pulp, periodontium and stainless steel. The single-layer model used a material with averaged properties. The result of this study is a demonstration of displacement and deformation of models after the interaction of elements. The multilayer model gives more accurate results.

Keywords: vestibular braces, occlusion, teeth, cephalometry, CBCT, TRG