Composite device for simultaneously realizing three-dimensional movement of orthodontic teeth by extending mandible forwards

Abstract

The invention discloses a composite device for simultaneously realizing three-dimensional movement of orthodontic teeth by extending a mandible forwards. The device comprises an upper jaw series personalized bracket-free invisible appliance, a lower jaw series personalized bracket-free invisible appliance, an upper jaw fixing piece, a lower jaw fixing piece, an elastic connecting piece and a rigidconnecting piece, wherein the upper jaw fixing piece is relatively positioned in front of the lower jaw fixing piece; and the elastic connecting pieces and the rigid connecting pieces are alternatelyconnected between the upper jaw fixing piece and the lower jaw fixing piece. The composite device simultaneously realizes promotion of mandible development and three-dimensional movement of orthodontic teeth, and greatly improves the correction efficiency of dental-like maxillofacial deformity characterized by insufficient mandible development and mandible retraction in the growth and developmentperiod.

Description

technical field [0001] The invention belongs to the technical research field of orthodontic medical devices, and in particular relates to a composite device for protruding mandibles and simultaneously realizing three-dimensional movement of orthodontic teeth. Background technique [0002] Characterized by underdeveloped mandibular bone and mandibular retrusion due to factors such as teeth, dental arch, upper and lower jaws, and muscles Dentoid and maxillofacial deformity is the most common type of deformity in orthodontics. Its incidence rate is 15%-20%, accounting for 49% of orthodontic patients. This kind of deformity seriously affects the appearance and function of patients. Most scholars at home and abroad believe that early intervention is very important for the prognosis of such patients, and it is recommended that 8-10 years old be the golden age for the correction of this type of bone disorder. [0003] Patients with dento-maxillofacial deformities are often acco...

AI Technical Summary

Problems solved by technology

Most doctors now treat For such patients, two-stage orthodontic treatment is usually used to protrude the mandible, promote the growth and development of the mandible, and control the three-dimensional movement of the upper and lower dentition. , the treatment period is long (more than three years), and in the mandibular protruding stage (about 12 months), because the upper and lower dentition cannot be adjusted and moved in three dimensions at the same time, the patient is often accompanied by crowding of the upper and lower anterior teeth that affects the appearance , the non-occlusal contact of the posterior teeth due to the anterior traction of the maxilla, and the caries and periodontal diseases caused by the severely crowded and misaligned teeth all make it difficult to achieve the goals of aesthetics, function, and health in a short period of time.

[0004] Second, the period of growth and development characterized by underdeveloped and retruded jaws For patients with dentofacial deformities, after using the existing traditional mandible protruding, it is easy to have side effects such as the increase of the inclination of the upper and lower anterior teeth and the elongation of the mandibular molars, which leads to the posterior rotation of the mandible, which makes the subsequent orthodontic treatment become complicated

[0005] Although, in recent years, manufacturers at home and abroad that produce personalized invisible aligners without brackets have successively launched a two-in-one invisible aligner without brackets that protrudes the mandible, promotes the growth and development of the mandible, and moves the upper and lower dentition three-dimensionally. It is expected to shorten the clinical treatment process and improve the orthodontic efficiency, but they all use the same soft material as the braces to make the mandibular leading device. This type of leading device is relatively easy to deform, which affects the setting of the protruding mandible. The amount and the effect of promoting the growth and development of mandible affect the curative effect of patients

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