Design and manufacture of orthodontic appliances

Abstract

The invention provides a design method of a dental orthodontic appliance, comprising obtaining an initial digital model of the teeth and jaws; designing a digital model of the upper palate arch with characteristic information; generating a digital model of the teeth and jaws with the digital model of the upper palate arch, and designing the dental orthodontic appliance . The feature information includes size information and preset position information of the palatal arch digital model, and the preset position information of the palate arch is that the two ends of the palate arch are set in the posterior region of the initial dental jaw digital model At the gingival margin on the lingual side or near the gingival margin on the lingual side, so that when the dental appliance interacts with the teeth, the palatal arch can induce the lateral expansion of the maxillary palatine suture bone deposition through deformation, and the teeth in the posterior teeth area With the action of the orthodontic appliance, the buccolingual moves laterally. The invention also provides a preparation method of the dental correction appliance.

Description

Technical field [0001] Technical Field The present invention relates to medical instruments, in particular, it relates to a design method and method of preparing a dental treatment instrument. Background technique [0002] In the admissions user orthodontist in, crowding is a common clinical manifestations, although commonly used coercive treatment designed to extractions, interproximal enamel, pushing the gap to provide a molar distal lip or tilt dental and other methods. But there are also a part of the user, crowded mainly for insufficient arch width, arch width in the open, crowded to be improved. Arch expansion is a common method of treatment of the arch width is not adjusted, a common method of fixing palatal arch expansion arch-expanding, four Helix expansion, Knight bow arch expansion, auxiliary arch expansion screw implant, surgical auxiliary arch expansion, etc. . Invisible appliance also has a certain arch expansion capability, previous studies have shown that the comb...

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Problems solved by technology

[0003] However, most of the above treatment methods are fixed treatment methods, which not only cause great damage to the user's oral cavity, but also make the user's experience and comfort poor.

In addition, during the operation of the above correction process, it is necessary for the user to insert the wrench into the small hole of the intraoral device to perform the bow expansion operation, which greatly increases the inconvenience of the user's bow expansion, and it is also easy for the small wrench to fall into the mouth during operation. Risk of airway obstruction in the mouth

Traditional four-eye spring expanders often cause discomfort to users because their metal parts are easy to compress mucous membranes

Invisible orthodontic appliances are chosen by more and more people because they are comfortable to wear, detachable, and beautiful. Invisible orthodontic appliances themselves also have a partial arch expansion effect, but due to the small arch expansion force, the arch expansion effect is poor. The molars should be expanded forward and backward in order to prolong the expansion cycle

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