Device for relieving buccal crossbite for fixed type asymmetric occlusal pad combined casting crown

Abstract

The invention relates to a device for relieving buccal crossbite for a fixed type asymmetric occlusal pad combined casting crown. The device comprises an upper jaw portion and a lower jaw portion, wherein the upper jaw portion comprises an casting metal combined crown of a left / right side first premolar tooth to a first molar tooth or a second molar tooth of an upper jaw, a reversely placed Hyrax expansion screw and left / right side front and back palate rods; the lower jaw portion comprises a casting metal combined crown of a first premolar tooth on a lower jaw buccal crossbite side to a first molar tooth or second molar tooth of a lower jaw; the casting metal combined crown has hollow parts corresponding to cusps; and metal drawing hooks are respectively welded to cheek and tongue sides of the casting metal combined crowns of the first premolar tooth of the lower jaw and the first molar tooth of the lower jaw. The device has the advantages that the size is small, foreign body sensation is low, requirements on compliance of patients are reduced due to adhesion fixation, and a shaping effect is stable; a plurality of back teeth of the buccal crossbite are connected to one another integrally, and side effects of vertical tooth rising possibly caused by mutual elastics can be avoided; and widths of dental arches of the upper jaw and the lower jaw can also be harmonized by the device while buccal crossbite is relieved.

Description

Technical field: [0001] The invention relates to an oral orthodontic appliance, in particular to a fixed asymmetric occlusal pad combined with a cast crown to unlock the occlusal device. Background technique: [0002] According to the buccolingual positional relationship of the upper and lower posterior teeth, incisors can be clinically divided into positive and inverse. Among them, positive lock occlusion is more common clinically, which means that the lingual slope of the tongue tip of the maxillary posterior teeth is located on the buccal side of the buccal slope of the buccal cusp of the mandibular posterior teeth, and the occlusal surface has no occlusal contact. The orthoocclusion of individual teeth can be further divided into orthoclenching of individual teeth; unilateral orthoclenching of the upper and lower second molars, unilateral orthoclenching of most posterior teeth and bilateral orthoclenching of majority of posterior teeth. [0003] The unilateral majority ...

AI Technical Summary

Problems solved by technology

This has a greater adverse effect on the functional movement of the patient's jaw and chewing movement

However, patients with facial asymmetry deformity caused by all ortholocking occlusal teeth on one side can only use the opposite side for occlusal function because all the posterior teeth do not touch, which can easily induce temporomandibular joint diseases, thereby causing mandibular abnormalities. The left and right bones develop asymmetrically, resulting in a deviated face, which will cause a great psychological and mental burden to the patient

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