Nazuna removable bus
SUBSTANCE: group of inventions involves an orthodontic separating wire and an orthodontic system, refers to medicine and is applicable in orthodontic dentistry for bimaxillary protrusion correction. The orthodontic separating wire applying an orthodontic force to front teeth in order to correct the bimaxillary protrusion comprises a lingual arch wire, an eruption wire and a pair of support wires. The lingual arch wire is curved after a front arch to adjust to a lingual side of the front teeth. The eruption wire is mounted on the lingual arch wire to connect to an eruption element and applying a lingual eruption force. The pair of support wires extends backwards from both ends of the lingual arch wire to apply a lingual eruption reaction force to the lingual arch wire. The pair of support wires is movably inserted into a pair of wire supports provided for the lingual sides of both molar parts.
EFFECT: inventions enable avoiding an inward turn of the tooth when correcting the bimaxillary protrusion, as well as providing the non-surgical correction of an excessive protrusion by the fact that the eruption force is applied to an alveolar process.
7 cl, 6 dwg
SUBSTANCE: method for shaping an orthodontic wire from a shape-memory material into a target geometry to permit precise insertion into a patient-specific orthodontic apparatus; it includes the following steps: creating a patient-specific target set-up of the upper or lower jaw of the patient, placing brackets on teeth to be treated in the target set-up, preparing a two-dimensional image of the target set-up with brackets in a plan view, loading the image into a data processor, identifying the position of the slots of the brackets in the image, exporting data on the position of the slots from the data processor, creating a baking mould for the shape-memory wire. Data are used to help generate wire-fixing portions in the baking mould that maintain the wire in areas corresponding to the slots during the baking, inserting the wire into the baking mould, and baking the wire.
EFFECT: disclosed is a method for shaping an orthodontic wire from a shape-memory material into a target geometry to permit precise insertion into a patient-specific orthodontic apparatus.
16 cl, 7 dwg