Composite device for simultaneously realizing front traction of maxilla and orthodontic tooth three-dimensional movement

Abstract

The invention discloses a composite device for simultaneously realizing front traction of maxilla and orthodontic tooth three-dimensional movement. The device comprises a front tractor, a series of personalized bracket-free appliances, and traction elastic rings connecting the series of personalized bracket-free appliances and the front tractor. The device realizes three-dimensional orthodontic movement of teeth in an oral cavity by utilizing the series of personalized bracket-free appliances, and also provides supporting force for the traction elastic rings through the front tractor, so thatthe traction elastic rings generate forward elasticity which is conducted to the maxilla through the series of personalized bracket-free appliances so as to achieve the purposes of front traction of the maxilla and promotion of maxilla development of patients in the growth and development period. The device simultaneously realizes the promotion of the development of maxilla and the three-dimensional movement of orthodontic teeth of the patients in the growth and development period, thereby greatly improving the correction efficacy of osteal three dentofacial deformities of the patients in thegrowth and development period, and quickly realizing the four aims of the correction of the dentofacial deformities: beautiful appearance, function, health and stable occlusion.

Description

technical field [0001] The invention belongs to the technical research field of orthodontic medical equipment, and in particular relates to a composite device for front-tracting the maxilla and simultaneously realizing three-dimensional movement of orthodontic teeth. Background technique [0002] Patients with skeletal class III dental and maxillofacial deformities often present with a depression in the middle of the face, most of which are caused by underdevelopment of the maxilla. It occurs in approximately 1% to 5% of Caucasians, and is as high as approximately 14% in Asian populations. The deformity can further aggravate with the growth and development of the whole body of the patient in the growth period, which will seriously affect the appearance and masticatory function of the patient, and even cause the patient's psychological disorder. Most scholars believe that early intervention is very helpful to the prognosis of such patients, and it is recommended that 8-10 ye...

AI Technical Summary

Problems solved by technology

The existing orthodontic treatment for skeletal class III patients is usually divided into the maxillary pretraction stage and the three-dimensional movement control stage of the upper and lower dentition. The symptoms of maxillary underdevelopment and three-dimensional misalignment of the upper and lower dentition are corrected successively, and the treatment cycle is long. (more than three years), and in the anterior traction stage of the maxilla (about 12 months), because the three-dimensional adjustment and movement of the upper and lower dentition cannot be carried out at the same time, the patient is often accompanied by crowding of the upper and lower anterior teeth, which affects the appearance, and the posterior teeth are caused by the upper and lower teeth. No occlusal contact caused by preosseous traction, dental caries and periodontal disease caused by severely crowded misplaced teeth all make it difficult to achieve the goals of aesthetics, function and health in a short period of time

[0004] Secondly, for patients with skeletal class III dental and maxillofacial deformities in the growth and development period, after using the existing traditional anterior traction device to anteriorly distract the maxilla, it is easy to cause the mesial movement and elongation of the maxillary molars, the increase of the lip inclination of the upper anterior teeth, and the development of the mandible. Obvious side effects such as posterior and inferior rotation complicate subsequent orthodontic treatment

[0005] Furthermore, in the traditional anterior distraction maxillary orthopedic treatment for patients with skeletal class III, the bonded spiral expander often needs to be bonded to the two maxillary molars and two bipedal maxillary during the entire anterior traction process (about 1 year). On the canines, the patient has obvious discomfort for a long time, and it also makes it difficult to clean the oral cavity, and it is easy to induce oral health problems such as redness and swelling of the palatal mucosa

Images