METHOD OF ORTHODONTIC TREATMENT OF PATIENTS WITH DENTOALVEOLAR ANOMALIES AND DEFORMATIONS USING BRACKET SYSTEM WITH SLOT OF 0.018 INCH AND RECTANGULAR CROSS-SECTION Russian patent published in 2025 - IPC A61C7/12 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to orthodontic dentistry, and can be used in treating dentoalveolar anomalies and deformations at outpatient dental reception. Orthodontic treatment of a patient with dentoalveolar anomalies and deformations is carried out using vestibular arches of a tetrahedral section of certain dimensions, which are installed in slots of brackets with size of 0.018 inches, which are fixed on the vestibular surface of the teeth of the upper and/or lower jaws, and includes stages of levelling and alignment of teeth vertically, horizontally and transversal. Choice of a treatment strategy depending on the severity of the orthodontic pathology is carried out based on obtaining and analysing an orthopantomogram, a teleroentgenogram of the head in a lateral projection or a computer-aided cone-beam tomogram, as a result of which the type – prescription and type of ligation – bracket system with a slot size of 0.018 inch and shape of an orthodontic arch are determined. That is followed by preliminary installation and fixation of the bracket system on the patient’s dentition, followed by the selected installation of the orthodontic arch. At that, initially installed blow in bracket slot is tetrahedral thermoactive superelastic nickel-titanium arc with section 0.016×0.014 inches with observance of the specified value of arc force. In case of mild or moderate crowding of teeth, where space deficit is from 2 to 6 mm, it is used for 8 to 16 weeks. In severe and very severe degrees of manifestation, where the space deficit is from 7 and more than 10 mm, the initial arch can stand for a longer time depending on the clinical situation and the mutual arrangement of the teeth in the dentures on both jaws, ligation – fixation of the arch in the slots of the bracket system is performed so that the orthodontic action of the used arch for teeth movement takes place, as well as for adherence in the slots of the brackets in order to develop all the characteristics laid in the slots of the brackets. Further, the arc is replaced with a rectangular superelastic arc of a nickel-titanium alloy with cross-section of 0.018×0.014 inch and finishing beta-titanium arc with section 0.016×0.016 inches, adjusting the rigidity, plasticity, elasticity of the orthodontic arch for the period determined by the orthodontist depending on the severity of the clinical situation, the degree of tooth movement, the stage of active orthodontic treatment, as well as the individual clinical picture of the patient. Whole period of treatment is accompanied by planned check-ups of the patient.

EFFECT: by reducing the number of used arches, the method enables to increase the effectiveness and quality of the orthodontic treatment, reduce the time of admission to the patient, reduce the cost of orthodontic treatment, as well as reduce the length of the latter due to controlled movement of teeth, namely torque, immediately at the initial stages of treatment.

1 cl, 32 dwg, 2 ex