5 results about "Posterior teeth" patented technology

The invention discloses a posterior tooth arrangement method and device based on measurement of an alveolar ridge intercrest line angle and a medium. The method comprises the following steps: acquiring an occlusion record of a patient; according to the occlusion record of the patient, establishing an upper and lower jaw edentulous jaw three-dimensional model of the patient; determining an occlusal plane of the three-dimensional model, and performing preliminary tooth arrangement on the three-dimensional model according to the occlusal plane; carrying out alveolar ridge intercrest line angle measurement on the three-dimensional model after preliminary tooth arrangement; and modifying the three-dimensional model after preliminary tooth arrangement based on an alveolar ridge intercrest line angle measurement result to obtain a posterior tooth arrangement scheme. According to the method, the included angle between the connecting line of the upper and lower jaw alveolar ridges and the occlusal plane is used as a basis for judging the arrangement mode of the back teeth, three-dimensional reconstruction is carried out on the oral cavity of the patient, digital measurement of the alveolar ridge intercrest line angle of the patient is completed in a computer, and the generated arrangement scheme of the back teeth can recover the relation between the upper and lower jaws of the patient more reasonably; the retention, the stability and the chewing performance of false tooth wearing are improved.

This application relates to the field of orthodontic appliances and discloses a multifunctional orthodontic traction device, including a self-ligating bracket for fixing and limiting the archwire. The top of the self-ligating bracket is equipped with an elastic closing hook, and a traction structure for orthodontic traction is hooked to the inner side of the elastic closing hook. A combined bracket for adhesive fixation to the posterior teeth is fixedly connected to one side of the traction structure. By using the self-ligating bracket and the combined bracket in conjunction with other brackets and archwires, the device achieves tooth positioning correction. The traction structure, installed between the self-ligating bracket and the combined bracket, generates horizontal tension, thereby performing Class II orthodontic traction on the teeth, achieving horizontal traction. Simultaneously, while the traction structure generates horizontal tension, a downward pressure structure converts part of the force into downward pressure on the molars, thus achieving molar indentation control. This device increases its usability through the integration of multiple functions and improves the efficiency of orthodontic treatment.

The invention relates to the technical field of medical instruments, and particularly discloses oral correction snore-ceasing equipment and a design method thereof. The oral cavity correction snore-ceasing equipment comprises a correction equipment body, an anterior tooth area and a posterior tooth area are formed in the correction equipment body, the posterior tooth area is provided with an occlusal tooth groove, the occlusal tooth groove is used for guiding a lower jaw and keeping the lower jaw at a forward stretching position, the anterior tooth area is provided with an occlusal pad, and the occlusal pad is connected with the inner side face of the occlusal tooth groove. And the occlusal pad obliquely extends from top to bottom in the direction deviating from the occlusal tooth groove. Auxiliary vent holes are formed in the anterior tooth area, penetrate through the outer wall surface and the inner wall surface of the appliance body and form a preset area, and the preset area is 10mm < 2 >-200mm < 2 >. By the adoption of the snore-ceasing device, the phenomena of snore and apnea caused by airway collapse can be relieved, meanwhile, blood oxygen saturation reduction caused by insufficient airflow is relieved or prevented, and the adaptability of the snore-ceasing device to a patient with the nasal cavity blockage problem is improved.

The invention discloses an orthodontic appliance capable of rapidly closing interdentition dispersed gaps. The orthodontic appliance comprises a retention structure, a stress dispersion connecting structure and an elastic lingual arch, the retention structure is used for retaining rear teeth on the two sides of the dentition; the stress dispersion connecting structure is located on the lip side and used for generating thrust towards the tongue side on the anterior teeth, and the two ends of the stress dispersion connecting structure are connected with the retention structures on the two sides respectively; the elastic lingual arch is located on the lingual side and used for generating contraction force to achieve the arch contraction effect, and the two ends of the elastic lingual arch are connected with the fixing structures on the two sides respectively. The invention also discloses an integrated manufacturing method of the orthodontic appliance capable of rapidly closing the interstitial space between dentitions. The combined structure of the stress dispersion structure and the elastic lingual arch is adopted, when the combined structure is applied to the lower jaw, lingual inclination can be rapidly conducted on anterior teeth of the lower jaw, meanwhile, dispersion gaps are rapidly closed, and when the combined structure is applied to the upper jaw, upper anterior teeth can be rapidly retracted, and the dispersion gaps are rapidly closed.

The embodiment of the utility model provides an orthodontic system for closing tooth gaps, which is used for being worn on an upper jaw dentition generating gaps after tooth extraction, and comprises a first tooth accommodating part for wrapping teeth in an anterior tooth area and a second tooth accommodating part for wrapping teeth in a posterior tooth area, the second tooth accommodating part comprises a first shell-shaped body which correspondingly wraps the teeth on the left side of the rear tooth area, a second shell-shaped body which correspondingly wraps the teeth on the right side of the rear tooth area, and a palate connecting part which is connected with the tongue side edge of the first shell-shaped body and the tongue side edge of the second shell-shaped body; a fixing part used for hanging an elastic piece is arranged on the lingual side face of the palate connecting part, a traction part is arranged on the first tooth containing part or the tooth surface, corresponding to teeth, of the first tooth containing part, and when the two ends of the elastic piece are hung on the traction part and the fixing part respectively, the elastic piece is hung on the elastic piece. The teeth wrapped by the first tooth storage part move towards the direction of the second tooth storage cavity.