Dental jaw simulation model generation method and system and dental appliance

Abstract

A jaw simulation model generation method comprises the steps that a jaw model is acquired, and the jaw model at least comprises a tooth body, a periodontal membrane and an alveolar bone; meshing the dental model to obtain a mesh model, the change of the position of each vertex in the mesh model reflecting the change of the geometrical shape of the dental model; endowing each grid unit in the gridmodel with a corresponding initial bone mineral density value; analyzing the geometrical shape change and the bone mineral density change of the grid model in a load state, and meshing the dental model again based on the geometrical shape change and the bone mineral density change of the grid model to obtain a grid model meeting requirements. Due to the fact that bone density and geometrical shapechanges are fused, the jaw simulation model can simulate alveolar bone shape and density changes after teeth move, and the tooth appliance designed and manufactured according to the jaw simulation model can achieve the efficient orthodontic effect.

Description

Technical field [0001] The present invention relates to the technical field of dental orthodontics, in particular to a method, system and dental appliance for generating a dental jaw simulation model for designing a dental appliance. Background technique [0002] The shell-shaped dental appliance is based on a digital dentition model, which divides the dentition into movable individual dental units, and forms a series of digital models by gradually moving the individual dental units, and then adopts 3D printing a series of gradually deformed models through the hot pressing process A series of shell-shaped dental appliances manufactured. The progressively deformed series of shell-shaped dental appliances are sequentially placed on the patient's dentition to perform orthodontics on the teeth through the resilience of the dental appliances. [0003] The currently used digital models of dental appliances and dentition models divided into movable tooth units are only geometric models t...

AI Technical Summary

Problems solved by technology

[0003] The currently used digital model for designing orthodontic appliances and the dentition model divided into movable tooth units are only geometric models that reflect the position and shape of the teeth. Tooth movement design is the movement of the digital tooth unit from the initial position to the target position of the correction. Does not reflect the influence of factors such as periodontal ligament, alveolar bone, and bone density during tooth movement

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