Orthodontic device and treatment method for vertically and mesally moving mandibular molars

Abstract

The embodiment of the present application provides an orthodontic device and a treatment method for vertically and mesally moving mandibular molars, which relate to the technical field of orthodontics. The orthodontic device is formed by bending stainless steel square wires, and includes a fixed section, a first force application section and a second force application section connected in sequence. The free end of the fixed segment is fixedly connected with the anchorage located in the premolar area. At least one closing curve is arranged in the first force applying section; the closing curve includes a first torsion portion, a first moment arm and a second moment arm located at the first torsion portion. The torsion generated by the first torsion part provides the correction force in the mesial direction. The second force application section includes a second torsion portion, a third moment arm and a fourth moment arm. The third moment arm is connected to the second moment arm, the fourth moment arm and the third moment arm are arranged at an obtuse angle, and the second torsion part generates a vertical force toward the target molar through the free end of the fourth moment arm. According to the present application, the mesial movement and vertical movement of the molars can be carried out simultaneously, which reduces the operation time by the chair, shortens the treatment period, and improves the patient's comfort.

Description

technical field [0001] The present application relates to the technical field of orthodontics, in particular, to an orthodontic device and an orthodontic method for vertically and mesally moving mandibular molars. Background technique [0002] Orthodontics is a branch of dentistry. Malocclusion is a deformity caused by congenital genetic factors and acquired environmental factors during the growth and development of children, such as tooth, jaw, and craniofacial deformities caused by diseases, bad oral habits, and abnormal tooth replacement, such as tooth arrangement Unevenness, abnormal relationship between the upper and lower dentists, abnormal size, shape and position of the jaw, etc. Malocclusion will affect the normal development of the maxillofacial region, form a "small chin" or "underground", and then affect oral health, increase the prevalence of dental caries, periodontal inflammation, affect pronunciation, abnormal chewing and swallowing, and Affect the appearan...

AI Technical Summary

Problems solved by technology

However, the above devices or methods all have certain defects clinically, such as the low efficiency of T-shaped curved vertical molars, which especially takes up the time of clinical chairs; The soft tissue is thick, and the failure rate is high; the existing molar vertical technology cannot provide continuous and stable vertical molar force, and the vertical force provided by the device will be greatly attenuated after the vertical part of the mesially inclined molar; it must be used with a full mouth brace Slot arch wire orthodontic treatment cannot meet the local treatment requirements of some patients, the treatment period is long, and the cost is high; in the prior art, the molar vertical and mesial movement needs to be carried out step by step, and after the molar is vertical, the device needs to be replaced to move the molar mesial. Complicated operations for follow-up visits, long hours of chairside operations, and poor comfort

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