Fixed type low anterior tooth Tin-block appliance and working principle thereof

Abstract

The invention discloses a fixed type low anterior tooth Tin-block appliance and a working principle thereof, and particularly relates to the technical field of medical instruments. The fixed type low anterior tooth Tin-block appliance and the working principle thereof comprise an upper jaw appliance and a lower jaw appliance, and is characterized in that the upper jaw appliance is formed by connecting upper jaw cast belt rings of rear teeth on the two sides through a central upper jaw rapid expansion device, the rear tooth occlusal surfaces on the two sides are formed by upper occlusal pads, a split-type lingual arch is arranged on the lingual side of anterior teeth, the upper jaw occlusal pad and the lower jaw occlusal pad form blocking surfaces in the mesio-middle part of the upper occlusal pad and the far-middle part of the lower jaw occlusal pad so as to maintain anterior leading of the lower jaw, anterior teeth of the upper jaw and the lower jaw are depressed while the lower jaw is guided forwards, good occlusion can be formed after correction is finished, and the side effect that posterior teeth extend is avoided. Meanwhile, the appliance is matched with the multi-purpose bow, correcting in the three-dimensional direction is achieved from transverse expansion, vertical multipurpose arch and sagittal lower jaw guiding forward, the design is reasonable, and the correcting effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a fixed twin-block appliance for depressing anterior teeth and its working principle. Background technique [0002] The appliance can generate force, or use the appliance to change the deformed frontal bone and misplaced teeth by the periodontal support tissue through the functional force of the masticatory muscles and perioral muscles, so as to facilitate the normal growth and development of the maxillofacial surface. The traditional Twin-block appliance is a movable appliance, and the maxillary and maxillary splints lock the front and back of the retracted mandible. [0003] Problems with traditional Twin-block aligners: [0004] 1. The traditional Twin-block appliance is not designed to depress the upper and lower anterior teeth. After the treatment, the occlusal state of the anterior teeth in early contact with the rear teeth will appear. Long-term early contact of t...

AI Technical Summary

Problems solved by technology

[0004] 1. The traditional Twin-block appliance is not designed to depress the upper and lower anterior teeth. After the treatment, the occlusal state of the anterior teeth in early contact with the rear teeth will appear. Long-term early contact of the anterior teeth will easily cause occlusal trauma of the anterior teeth, and occlusion will occur in the later period The elongation of the posterior teeth can easily lead to an increase in facial height, resulting in mandibular retrorotation and aggravating mandibular retrusion;

[0005] 2. The traditional Twin-block appliance is a fixed appliance, which requires good cooperation from the patient to achieve a good orthodontic effect;

[0006] 3. Traditional Twin-block appliances are prone to labial tilt compensation of the mandibular anterior teeth;

[0007] 4. The traditional Twin-block appliance cannot align the upper and lower anterior teeth at the same time during the orthodontic process

[0008] 5. Malocclusion is an abnormality in the three-dimensional direction, and the traditional Twin-block appliance cannot adapt to the correcting direction, and the effect is poor

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