Concealed correcting appliance for externally-expanded dental arch of anterior tooth area and manufacturing method thereof

Abstract

The invention discloses a concealed correcting appliance for externally-expanded dental arch of an anterior tooth area. The concealed correcting appliance comprises a tooth arrangement socket, a base,a lip side surface and a tongue side surface. The concealed correcting appliance has the beneficial effects that a certain difference is formed between the lip side surface as well as the tongue sidesurface and the dislocated teeth and jaw; after the correcting appliance is deformed, a force for moving the teeth to the direction of the applied displacement load is produced, then the teeth are certainly moved, and finally the dislocated teeth are corrected; the thickness of the tongue side surface is greater than the thickness of the lip side surface, and the thickness of the concealed correcting appliance is controllable, so that when the force for the deformation of the correcting appliance is larger, the force of the externally-expanded dental arch is greater than the counteraction force, and the teeth are externally expanded and moved; in step A, the teeth and jaw in a mouth are scanned in a three-dimensional way so as to build a three-dimensional digital model, the comprehensivestereo tooth and jaw shapes can be obtained, and a gypsum tooth cast can be converted into an operable digital model; in step C, a resin tooth model is manufactured by a 3D printing technique, so as to quickly, accurately and conveniently convert; the concealed correcting appliance is suitable for being popularized and applied.

Description

technical field [0001] The invention relates to an orthodontic appliance, in particular to an invisible orthodontic appliance for expanding a dental arch in an anterior tooth region and a manufacturing method thereof, belonging to the technical field of medical orthodontics. Background technique [0002] Labial movement of incisors is suitable for crowded dentition with relatively upright incisors or lingual inclinations. The traditional orthodontic technique is to develop the anterior teeth labially with a vertical curved force unit on the fixed appliance, or to move the anterior teeth near the buccal canal of the molars. The medium-curved omega wire exerts labial tilting force on the incisors. [0003] The manufacturing process of invisible orthodontic appliances is as follows: firstly, the rapid development of 3D laser scanning technology enables plaster tooth molds to be converted into operable digital models, and follow-up work is impossible without digital models; seco...

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Problems solved by technology

[0003] The manufacturing process of invisible orthodontic appliances is as follows: firstly, the rapid development of 3D laser scanning technology enables plaster tooth molds to be converted into operable digital models, and follow-up work is impossible without digital models; secondly, computer-aided design and graphics The rapid development of the technology enables developers to use its various algorithms to develop 3D software that realizes various functions. The software system needs to complete the processing and editing of digital dental models to form the final treatment plan. Finally, laser rapid prototyping technology is 3D printing. The rapid development of technology has realized the process of quickly, accurately and conveniently transforming the digital model into a resin tooth model, and then through the hot-pressing blister molding technology, the transparent dental appliance is reproduced on the resin tooth model, and this An elastic and transparent aligner is the invisible orthodontic appliance, commonly known as "invisible braces". The positive model makes the invisible appliance, and the patient wears the invisible appliance which is different from the misaligned teeth. After the appliance deforms, it will generate a force that moves the teeth in the direction of the displacement load applied to it, and finally the misaligned teeth are corrected, and the That is to say, the force generation of the invisible aligner is caused by the displacement effect, and the deformation after wearing acts on the crown, so that the teeth will move a certain amount, and finally the teeth will be aligned to complete the orthodontic process. However, due to the entire The superimposition effect of the deviations generated by each step in the treatment plan causes the final treatment effect to deviate from the design effect before treatment. In order to eliminate the deviation between the above-mentioned treatment effect and the design effect, it is necessary to continuously redesign the plan, make photocurable resin prototypes and Suppress invisible aligners, which not only increases labor costs and raw material costs, but also prolongs the correction cycle, and also reduces the satisfaction of doctors and patients with invisible aligners, which is not conducive to the promotion of invisible aligners

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