Intraoral and maxillary clasp type anterior traction appliance for correcting skeletal inversion

Abstract

The invention discloses an intraoral maxillary clasp type occlusal pad reverse headgear appliance for orthodontics of skeletal crossbite. The reverse headgear appliance has a structure as a palatal side base plate that covers all upper teeth; a back tooth occlusal pad and an incisor teeth cap are symmetrically arranged on the palatal side base plate; a permanent molar arrow clasp, a premolar arrow clasp, a front towing hook and a maxillary central incisor long arrow clasp are symmetrically embedded in the palatal side base plate, or a primary molar long arrow clasp, a front towing hook and a maxillary central incisor long arrow clasp are symmetrically embedded in the palatal side base plate, or a back tooth embrasure hook and a maxillary central incisor long arrow clasp are symmetrically embedded in the palatal side base plate. The front towing hook is located at the lip side and between a lateral incisor teeth and a canine tooth at a distance being 3-5 mm from a sulcus vestibularis, wherein an opening being inclined relative to an occlusal plane upwardly and backwardly at 45 degrees is formed in the front towing hook, and the front towing hook is bent outwardly in a U-shaped structure. The reverse headgear appliance has excellent fixation, is smart and comfort, allows people to speak and eat, reduces orthodontic time and is increased in adaptation disease, increases clinical curative rate and has excellent economic and social benefit.

Description

technical field [0001] The invention belongs to an auxiliary device for oral orthodontics, and relates to an intraoral and maxillary snap-ring type pre-occlusion traction appliance (including basic type and variant type) for correcting skeletal crossbite, which is used for treating deciduous teeth to permanent teeth from the growth and development stage Correction of primary skeletal Angle III malocclusion. Background technique [0002] About 70% of patients with malocclusion in my country, the incidence of Angle Ⅲ malocclusion is about 12%, and the incidence of malocclusion is the third, which has a great impact on the physical and mental health of patients, and the rate of clinical visits is high. The existing orthodontics commonly used to correct skeletal Angle class III malocclusions include anterior traction appliances, SanderIII functional appliances, headgear and chin pocket appliances, etc., and anterior traction appliances must be worn with an external front tractio...

AI Technical Summary

Problems solved by technology

[0003] The existing fixed-bonded expansion anterior traction appliances and fixed-bonded bracket-type anterior traction appliances are mainly used for patients with mixed dentition and permanent dentition at the age of about 10. Because there is no splint, the jaw is driven by the root Bone forward traction, combined with the early stage of correction of skeletal crossbite, because the reverse locked knot is not easy to open, the resistance of the upper anterior teeth affects the initial correction, and when the upper and lower incisors are aligned with each other, there is no splint, which affects the patient's eating and swallowing. Unstable combination, affecting curative effect

[0004] Adhesive splint expansion anterior traction appliance and adhesive full dental arch occlusal anterior traction appliance are mainly suitable for patients with early skeletal phase of mixed dentition. Disadvantages of anterior traction, but because the intraoral appliance is not easy to clean, there is a problem of bad breath; and during the orthodontic period, it is a skeletal patient with mixed dentition, and the root growth of the permanent tooth is less than 1 / 2 of the root. falling off, causing medical accidents

[0005] The SanderIII functional appliance was invented by the German doctor Sander in the 1980s. It has been reported that it has a positive effect on mild to moderate skeletal patients in the growth and development period. The indications are limited, and the curative effect of restricting mandibular development with headgear and chin-cuff appliance alone is controversial

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