Orthodontic system for accurately transmitting prefabricated arch wire deformation amount and manufacturing method thereof

Abstract

The invention discloses an orthodontic system for accurately transmitting prefabricated arch wire deformation amount and a manufacturing method thereof and belongs to the field of orthodontics. The orthodontic system comprises a set of orthodontic brackets and a set of arch wires, which correspond to the quantity of teeth, wherein each orthodontic bracket comprises a bracket bottom plate and a bracket body; each bracket body comprises a bracket retainer, a bracket movable body and a connecting component; the bracket retainers are connected with the bracket bottom plates; the bracket movable bodies are connected with the arch wires; the bracket retainers and the bracket movable bodies can realize separable connection through the connecting components; the set of arch wires comprise one or more arch wires; the shape of each arch wire is bent and molded based on a middle or final target arrangement position of the teeth; when the set of arch wires are used, the teeth can be moved to the final target arrangement position. The orthodontic system disclosed by the invention can be used for accurately controlling a tooth movement manner and movement amount and has an indication range which is the same as that of traditional fixed orthodontics; meanwhile, the chair-side operation time of doctors can be reduced.

Description

technical field [0001] The invention relates to the field of orthodontics, in particular to a personalized customized orthodontic system. technical background [0002] Orthodontics is a discipline that treats misaligned teeth and tooth surface deformities through the application of orthodontic devices. At present, the most widely used fixed orthodontic treatment is based on the interaction between the brackets bonded to the labial side and the arch wires in sequence. Mainly include winged brackets (such as patent documents CN204446157U, CN2614644Y, CN202020559U), self-locking brackets, etc. (such as patent documents CN104434324A, CN204636588U, CN201578387U). In the early stage of labial fixed orthodontics based on brackets and archwires, the elasticity of circular archwires and the restriction of orthodontic brackets on the archwires were used to realize the teeth to slide freely according to the shape of the archwires to achieve alignment of the teeth. Through the interac...

AI Technical Summary

Problems solved by technology

This orthodontic system has the following problems: 1. The controllability of tooth movement in the early alignment process is poor, mainly because in the orthodontic process at this stage, the movement of the teeth mainly depends on the free sliding of the archwire within the range of the bracket. It is impossible to precisely control the movement direction and amount of the teeth, which easily leads to unpredictable tooth movements; 2. In the later fine adjustment process, the square archwire and the square groove cannot achieve close contact, and there is a certain gap between the archwire and the groove. If there is a gap, the bracket needs to be pre-set with an additional angle or an additional torque is added to the arch wire to make some compensation.

However, the orthodontic system still has the following problems: 1. The lingual fixed appliance still uses the sliding principle of the labial fixed orthodontic and the interaction between the square arch wire and the bracket to realize the three-dimensional direction control of the teeth, so there is also the above-mentioned labial The problem of fixed orthodontic treatment, and the lingual bracket is smaller than the labial bracket, the groove is narrower, and the movement in the three-dimensional direction is worse; 2. At the same time, the lingual space is small, and the patient's mouth opening is limited. Interfilament ligation is more complex than labial and thus requires more specialized training and chair time for the clinician

However, the invisible aligner without brackets abandons the traditional mechanism of controlling the three-dimensional direction of the teeth through the interaction between the brackets and the arch wire, and moves the teeth simply by wrapping the teeth with a plastic film. Under this mechanism, there are the following problems : 1. The way the diaphragm wraps the teeth cannot achieve a full range of coverage. Even through the design of the attachment, the movement of the teeth cannot be controlled very accurately, and the movement of the teeth is mainly based on thrust, and the three-dimensional direction of the teeth is poorly controlled. The indications are narrow; 2. The flexibility and hardness of the diaphragm cannot be balanced, and there is a contradiction between the wearing comfort and the precise movement control of the teeth; 3. In the later stage of orthodontics, because there are two layers of diaphragm thickness between the jaws, it is difficult to establish a good occlusal relationship

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