Invisible orthodontic method for tooth integral movement design based on alveolar bone form

Abstract

The invention discloses an invisible orthodontic method for tooth integral movement design based on an alveolar bone form. Oral and maxillofacial soft and hard tissue data of a patient are acquired through CBCT (cone beam CT), and tooth and alveolar bone integral form 3D reconstruction is performed; then a dental crown, a dental root and an alveolar bone of the patient are modeled through a partitioning algorithm; an orthodontic scheme is designed afterwards; then according to an orthodontic requirement, a dentition model adjustment sequence simulating tooth movement is generated through a simulation movement algorithm; finally, sequence data are used for producing an invisible orthodontic appliance. According to the invention, three-dimensional morphological data of the dental crown, the dental root and the alveolar bone are acquired through CBCT, the position relation of the dental root and the alveolar bone can be seen clearly in the design of the invisible orthodontic scheme and the generation process of the dentition model sequence simulating dental crown movement, problems of bone fenestration and bone fracture caused by close collisions of the dental root and the alveolar bone can be avoided, and the treatment safety of the patient is ensured in the whole invisible orthodontic process.

Description

technical field [0001] The invention relates to an invisible orthodontic method for teeth, in particular to an invisible orthodontic method for designing overall movement of teeth based on alveolar bone morphology. Background technique [0002] Invisible aligners, also known as "bracketless invisible aligners", are a type of orthodontics. Bracketless invisible aligners do not have the archwires and brackets in the traditional orthodontic process, and are widely favored by cosmetic patients because of their outstanding advantages such as aesthetics, comfort, and convenient tooth cleaning. [0003] At present, the invisible aligner production companies on the market are based on the three-dimensional data of the patient's crown, and carry out the design of the invisible aligner and the 3D printing of the invisible aligner. The specific method is direct intraoral scanning, or re-scanning using a silicone rubber impression to obtain the three-dimensional shape data of the crown...

AI Technical Summary

Problems solved by technology

[0004] This method has a fundamental flaw: it only pays attention to the data acquisition of the crown and ignores the relationship of the whole tooth in the alveolar bone during the orthodontic process

In the actual orthodontic process, the positions of the crown and the root are changing, and this method only simulates the position change process of the crown during the entire design process of the invisible orthodontic scheme, and there will be many problems in the process of patients receiving this invisible orthodontic treatment. Big hidden dangers, for example, during the process of tooth movement, the root of the tooth may move out of the alveolar bone directly, causing serious problems such as bone opening, bone cracking, and tooth loosening or even loss

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