Erecting auxiliary spring for impacted molar of lower jaw

Abstract

The invention discloses an erecting auxiliary spring for an impacted molar of a lower jaw. The erecting auxiliary spring acts on an external surface of a tooth in cooperation with a tooth fixed corrective appliance and comprises an L-shaped tape-ring erecting auxiliary spring adaptive to a side face of the impacted molar, wherein a proximal end of the erecting auxiliary spring is bent into an elastic ring, and a distal end of the erecting auxiliary spring is bent into a hook which is adaptive to a primary arch wire. The impacted molar can be erected by a light force, the tape-ring auxiliary spring is adjusted in batches to carry out gradual stressing, and thus, the forward-tilting impacted molar is erected. Moving requirements of other teeth are not affected, the production is simple, theadjusting is easy, foreign body sensation is low, wearing is comfortable, and the erecting auxiliary spring is healthy and clean and is free of complications.

Description

technical field [0001] The invention relates to the technical field of orthodontics, in particular to an erecting auxiliary spring for mandibular impacted molars. Background technique [0002] Impacted molars are a serious dental and jaw deformity with an incidence rate of 0.65-1.36% in the population. Although its incidence rate is not high, impacted molars hinder the normal occlusion of the teeth and affect the masticatory function of the stomatognathic system. Because the occlusal plane is too low, it is easy to elongate the opposing teeth, forming occlusal interference and false Periodontal pockets, which lead to plaque attachment, increase the likelihood of caries and periodontitis, and can damage the distal roots of first molars. From the clinical investigation, it can be seen that the impacted second molars are mostly impacted anteriorly, that is, the crown of the second molar is against the distal crown of the first molar or against the distal root of the first mola...

AI Technical Summary

Problems solved by technology

Oral X-ray panoramic films show that the crowns of anteverted impacted molars are located in the distal neck of the mesiomolars (anchored teeth), and some common food impaction causes dental caries in the affected teeth. Surgical extraction and implant anchorage of the opposing jaw are usually used. Traction, fixed appliance combined with molar ring welded multi-curved push spring, molar retroversion and other technical treatment, but the above method exposes the buccal surface of impacted teeth and brings surgical trauma, which is not easy for patients to accept, and the operation is complicated, which is difficult for most doctors to complete , the welding technology also has the risk of desoldering and foreign objects falling into the throat

Images