Expansion type muscular activator for correcting class-II malocclusion and correction method thereof

Abstract

The invention provides an expansion type muscular activator for correcting class-II malocclusion. The muscular activator comprises a denture, and is characterized in that the denture is formed by a left denture and a right denture, and comprises an upper anterior tooth plastic cap and a lower anterior tooth plastic cap which are worn in the anterior tooth region, a palate denture, a vertical wing plate and an interocclusal part, wherein the palate denture is positioned at the oral palatal shelf part and the vertical wing plate is positioned on the tongue side of the lower dentition when the activator is worn; the interocclusal part is positioned between the backteeth occlusal surfaces of the upper jaw and the lower jaw; and the distal of the denture reaches the distal of the first molar of the upper jaw and the distal of the first molar of the under jaw. The expansion type muscular activator also comprises a screw and two draw hooks, the left denture and the right denture are connected by virtue of the screw; and the draw hooks correspond with mesial of canine teeth on two sides of the upper jaw. The expansion type muscular activator is reasonable in design, low in cost and convenient to wear, and is suitable for patients with early class-II high-angle malocclusion, especially cases of incompetent lips.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an arch expander muscle activator for correcting Class II malocclusion. Background technique [0002] Class II malocclusion is a relatively common dentognathic deformity in clinical practice, with mandibular retrusion, maxillary protrusion, open lips and teeth showing, which greatly affects the appearance of patients. Early treatment of Class II malocclusion can block or alleviate the development of the deformity in most cases, and reduce the difficulty of subsequent fixed orthodontic treatment. The traditional muscle activator appliance for Class II malocclusion usually consists of a plastic base without retaining clasps or force-generating devices that generate mechanical force. The upper part of the base covers the entire palatal cover, and the lower part of the base Extending down to the floor of the mouth, the base reaches distal to the first permanent molar. The upper and l...

AI Technical Summary

Problems solved by technology

However, the traditional muscle activator for Class II malocclusions has the following disadvantages: (1) the base area is large, the patient is not comfortable to wear, and is prone to nausea; Unable to depress the upper anterior teeth, so the inhibition effect on the forward and downward growth of the maxilla is poor; (3) For patients with narrow upper and lower dental arches, synchronous expansion of the upper and lower arches cannot be achieved because there are no expansion parts; (4) For patients with open lips and teeth, the pendulum effect cannot be eliminated when the lip arch is retracted, so that the upper anterior teeth are exposed too much; (5) For the case where the mandibular spee's curve is too large, there is no gap between the lingual side of the lower incisor and the base. For cushioning reasons, therefore also the depression of the mandibular incisors cannot be achieved

Images