METHOD OF CORRECTING 2ND CLASS OF ANGLE CLOSURE USING ALIGNERS WITH BUTTONS Russian patent published in 2025 - IPC A61C7/10 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to dentistry, and is intended for use in Angle class 2 correction. Method involves collecting anamnesis at the first stage, inspecting the patient’s oral cavity for diagnosis and planning of further treatment. At the second stage, a dental arch is photographed, then an X-ray examination of the dental rows is carried out, and then dental arch impressions are taken. At the third stage, the obtained dental arch data are loaded into the doctor’s personal office to create a digital SET UP model of the patient’s dental arch. At the fourth stage, the digital SET UP model is used to perform successive movement of teeth and occlusion correction. At the fifth stage, a set of aligners is made by thermoforming a medical biopolymer on stereolithographic models of dental arches with planned movements of teeth. At the sixth stage, on the set of aligners made at the fifth stage, buttons from biocompatible plastic are attached, on the upper jaw the first button between 12th and 13th teeth and the second button between 22nd and 23rd teeth from the vestibular side, or a first button opposite tooth 13 and a second button opposite tooth 23 on the vestibular side, or a first button between 13 and 14 teeth and a second button between 23 and 24 teeth on the vestibular side, on the lower jaw a third button opposite tooth 35 and a fourth button opposite tooth 45 on the vestibular side, or third button opposite tooth 36 and fourth button opposite tooth 46 from vestibular side, or third button opposite tooth 37 and fourth button opposite tooth 47 from vestibular side, elastic traction with working force from 1 to 130 g in sagittal direction of lower jaw is fixed between buttons of upper and lower jaws. First button is attached to the fourth button, and the second button is attached to the third button. On the first week of wearing the aligners, elastic rods with a working force of up to 70 g are installed to adapt the temporomandibular joint to the teeth movements planned at the fifth stage. On the second week, the elastic rods are replaced with elastic rods with a working force of 70 g to 130 g. On the third week, the elastic rods are replaced with elastic rods with a working force of up to 70 g. At the fourth week, the elastic rods are replaced with elastic rods with a working force of 70 g to 130 g. After the fourth week, the patient is examined to assess the movement of the teeth of the lower jaw and to correct the working force of the elastic rods. If the teeth of the lower jaw are displaced by 1-1.5 mm, elastic rods are installed with a working force of 70 g to 130 g for 4 weeks and the patient is examined to assess the movement of the teeth once every four weeks before the end of treatment, which is determined by the achievement of the teeth movement planned at the fifth stage, and if the teeth of the lower jaw are displaced by less than 1 mm, elastic rods are installed with a working force of up to 70 g for four weeks, after which the patient is examined to assess the movement of the teeth and if the lower jaw displacement is fixed by 0.5-1 mm, elastic rods are installed with working force from 70 g to 130 g for 4 weeks and the patient is examined to assess the movement of the teeth once every four weeks before the end of the treatment, which is determined by the achievement of the planned teeth movement at the fifth stage.

EFFECT: method enables for controlled, in the process of treatment, exposure of a group of teeth to change 2nd class of Angle closure without the need to attach orthodontic buttons to the surface of the teeth.

4 cl, 8 dwg