Rotation center design test method, shell-shaped dental instrument design and preparation method

Abstract

The invention provides a rotation center design inspection method and a shell-shaped dental instrument design and preparation method, wherein the rotation center design inspection method includes the steps of: classification of a single digital crown model, fitting of the long axis of a single digital crown model, digitization The determination of the impedance center of the crown model, the tooth arrangement design of the simulated digital crown model, and the optimal adjustment of the rotation center, wherein, based on the torque generated by the digital crown model and the balance torque generated by the digital appliance The design of the ratio and the amount of rotation in the design of the row of teeth inspects the preset position of the rotation center to realize the optimal adjustment of the rotation center. By classifying the single digital crown model, fitting the long axis of the crown model, determining the impedance center, designing the arrangement of teeth, and optimizing the adjustment of the rotation center, the designed tooth rotation center is basically consistent with the rotation center in the actual orthodontic process. The effect of dental treatment is in line with the expected effect, further avoiding the occurrence of medical accidents.

Description

technical field [0001] The invention belongs to the technical field of orthodontics, and more precisely relates to the manufacturing technology of a shell-shaped dental appliance, in particular to a design inspection method for the center of rotation based on a digital crown model, a tooth arrangement method based on a digital crown model, and a shell-shaped tooth aligner. A method of designing a dental appliance and a method of manufacturing a shell-shaped dental appliance. Background technique [0002] In the design process of orthodontic treatment, it is necessary to move and arrange the patient's single digital tooth model in three-dimensional space, which is to simulate the process of digital tooth arrangement. However, at present, for orthodontics of teeth, the actual intraoral information of the patient is converted into a digital three-dimensional tooth model, and then the digital three-dimensional tooth model is segmented to obtain a digital crown model, and the sur...

AI Technical Summary

Problems solved by technology

[0003] Due to the different data collection methods, the above-mentioned digital tooth models do not have a digital root model, so the rotation center of the digital tooth model can only be designed on the digital crown model or the repaired digital crown model. For the digital tooth root model The parameters need to be simulated and estimated. The accuracy of this method has a certain deviation, which may cause the actual orthodontic position of the teeth to be inconsistent with the expected target orthodontic position in the actual orthodontic process. Orthodontic cycle; in severe cases, the root of the tooth may even move out of the alveolar bone during the orthodontic process, resulting in serious medical accidents

Images