Improved nance holding arch appliance for embedded impacted tooth in upper jaw

Abstract

The invention discloses an improved nance holding arch appliance for an embedded impacted tooth in upper jaw, the improved nance holding arch appliance comprises two nance holding arch belt rings, a plastic palate support and a horizontal arm, the nance holding arch belt rings are fixedly connected with the nance holding arch, the other end of the nance holding arch is embedded in the plastic palate support, one end of the horizontal arm is embedded in the plastic palate support, the other end of the horizontal arm extends towards the lip side and is bent in an L shape, and a traction device is arranged on the horizontal arm. The hard palate is used as an anchorage, so that the problems of anchorage loss, insufficient anchorage and the like are solved. Meanwhile, the horizontal arm extending out of the nance holding arch can prevent a coppice guide hook from moving towards the palate side, force and torque during clinical force application are ensured, compression of a force application device on mucous membranes on the lip palate side is avoided, the risk of loss of alveolar bones and gingivae is reduced, a ring-shaped guide rod structure can adjust the position of a traction point at the tail end in a three-dimensional space to control the direction of the traction force, the tooth movement resistance is reduced, and the total range of tooth stress application is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of oral medical devices, and in particular relates to an improved nance arch appliance for maxillary impacted teeth. Background technique [0002] The maxillary incisors and canines are often called "social six teeth", and the maxillary impacted central incisors will affect the patient's appearance, pronunciation function and mental health. For some ambush maxillary central incisors, if not treated in time, it will lead to root resorption of adjacent teeth and formation of odontoid cysts, and even affect the maxillofacial development of patients. Impacted maxillary central incisors often need to move in a large range, which is difficult to treat. At present, the commonly used method is surgical fenestration combined with orthodontic traction to treat impacted teeth. The method of pulling the impacted teeth to the normal position is usually fixed orthodontics, and fixed orthodontics can be divided into three...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the purpose of the design of the present invention is to provide an improved nance arch appliance for impacted maxillary teeth, which can reasonably adjust the direction of the orthodontic force in three-dimensional space to avoid the existing When treating impacted impacted teeth, they cannot be moved by traction, and do not need dentition or dental arch as anchorage, which can greatly improve the success rate of treatment of impacted impacted maxillary central incisors

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