Adjustable moving traction device

Abstract

The invention provides an adjustable moving traction device which comprises a base support (1). A traction hook (4), a pair of retaining rods (3) and a labial arch (2) are arranged on the base support (1), a W-shaped curve (7) is arranged on the labial arch (2), a pair of molar sleeves (6) are arranged on the base support (1), and a group of interproximal hooks (5) are arranged on the base support (1) on one sides of the molar sleeves (6). The adjustable moving traction device has the advantages of simplicity in making, low cost and convenience for wearing and taking off and is easy for a patient to accept and cooperate and conducive of smooth traction treatment.

Description

[0001] Technical field: [0002] The invention relates to the technical field of orthodontics, in particular to an adjustable movable traction device for correcting maxillary impacted central incisors. [0003] Background technique: [0004] The maxillary incisors and canines are often referred to as "social six teeth". The loss of maxillary central incisors seriously affects the appearance, pronunciation and maxillofacial development of children. Some central incisors that prevent eruption will lead to The root resorption of adjacent teeth and the formation of odontoid cysts bring serious physical and psychological harm to patients. The position of the impacted maxillary central incisor is high, and the treatment is difficult. Clinically, surgical extraction, autologous tooth replantation, and surgically assisted orthodontic traction are often used. Surgical extraction takes a short time to treat, but it will lead to premature loss of anterior teeth and bone defect of maxilla...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: ①The direction of the traction force is difficult to control, and the root absorption of the embedded teeth or adjacent teeth may be caused during the traction process; ②At the same time, the adjacent teeth will be inclined to the gap and labial side and be depressed

The disadvantages are: ① Before traction, it is still necessary to use a fixed appliance to push out the space required for the impacted teeth. This process takes a certain amount of time, so missing the best traction time, especially for inverted impacted central incisors, may cause Consequences such as increased curvature of the tooth root or even shortened tooth root

②During the correction process, the guide rod appliance is always fixed in the oral cavity, and a lot of food remains in the gap between the base and the oral mucosa, which is difficult to clean and cause inflammation

③At the initial stage, the traction hook bypasses the alveolar crest of the missing tooth and extends to the vestibular groove on the labial side of the embedded tooth. Because the traction hook is too long, the traction hook will inevitably compress the gums when the traction force is applied, and in severe cases, it will lead to gingival necrosis

Images