Improved Nance arch for traction of canine teeth

Abstract

The invention discloses an improved Nance arch for traction of canine teeth. One end of the Nance arch is connected with first permanent molar bands, the other end of the Nance arch is connected with a plastic base, a transpalatal arch is arranged between first permanent molars, two ends of the transpalatal arch are connected with the first permanent molar bands on two sides, the plastic base, the Nance arch and the transpalatal arch form a triangular structure, a U-shaped curve bent in the direction away from the lip direction is arranged in the middle of the transpalatal arch, two traction hooks are symmetrically arranged on the left side and the right side of the U-shaped curve respectively, the tongue side buckles are symmetrically arranged on the upper jaw canine tongue side needing palatal movement, fixing hooks are arranged on the tongue side buckles, a traction wire is arranged between the fixing hook on the left side and the traction hook on the right side, and a traction wire is arranged between the fixing hook on the right side and the traction hook on the left side. According to the improved Nance arch, the transpalatal arch is additionally arranged on the basis of the Nance arch for vertical control, meanwhile, the two backward traction hooks are additionally arranged on the transpalatal arch and used for moving canine teeth ectopic in the lip direction towards the distal middle and moving the canine teeth in the palatal direction at the same time, the force of a lip side fixing appliance does not need to be used, and the device is efficient and attractive.

Description

technical field [0001] The invention relates to the technical field of orthodontic research, in particular to an improved Nance arch for pulling canines. Background technique [0002] Nance Bow is an intraoral auxiliary device that enhances anchorage, and is often used together with fixed appliances. In the prior art, the existing Nance arch needs to be used in conjunction with a fixed appliance to achieve the movement of the target teeth, and cannot actively apply force, and can only be used to enhance the anchorage of the posterior teeth. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention provides an improved Nance bow for pulling canines. This device adds a transverse palatal rod on the basis of the Nance bow for vertical control, and at the same time adds two backward traction hooks to the transverse palatal rod. , used to move the labial ectopic canines distally and palatally at the same time, without relying on t...

AI Technical Summary

Problems solved by technology

In the existing technology, the existing Nance arch needs to be used in conjunction with a fixed appliance to achieve the movement of the target tooth, and cannot actively apply force, and can only be used to enhance the anchorage of the posterior teeth

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