Patent RU-2732977-C1 (RU)
Title: Orthodontic bracket
Inventor: DAMON PAUL L
IPC: A61C7/28
Filed: 2017-07-28
Granted: 2020-09-25
Abstract: FIELD: medicine. 
     SUBSTANCE: group of inventions relates to medical equipment, specifically to an orthodontic bracket, and in particular to an orthodontic bracket, which can be configured to provide, in different types, a variety of force moment values and which individually and forcibly acts on the patient's tooth, simultaneously remaining substantially in the same mutual orientation on a front surface of the patient's tooth. In compliance with first embodiment, orthodontic bracket comprises bracket body. Bracket body is attached with possibility of removal to the front surface of the patient's tooth and additionally has a front outward facing surface. Bracket body further forms a slot for an orthodontic wire arc, which is oriented in a given angular orientation relative to the bracket body and which additionally comprises an orthodontic wire arc and interacts with orthodontic wire arc, having a given cross-section shape, and wherein the orthodontic wire arc inserted into the orthodontic wire arc slot communicates a predetermined moment of force of the front surface of the bracket body to allow movement of the patient's tooth of the first, second or third order. Orthodontic bracket when used with other similar dental orthodontic brackets placed on adjacent teeth of the patient creates levelling in the centre of slots for an orthodontic wire arc. Orthodontic wire arc is placed into alignment in the centre of the orthodontic wire arc slots of the corresponding orthodontic brackets without significant bending, despite the fact that adjacent orthodontic braces provide various displacements of adjacent teeth of the first, second or third order. Between bracket body and patient's tooth gap is formed for hook, which additionally has a given constant size, wherein bracket body front surface remains oriented in same plane, and the dimensions of the gap for the hook remain the same despite the fact that the bracket body is made and is configured to cause movement of the patient's tooth of the first, second or third order. Slot for the orthodontic wire arc has a cross-section shape forming a rhomboid. According to the second embodiment of the orthodontic bracket, the bracket body is attached with possibility of removal to the patient's front tooth surface and fixed relative to it. Bracket body front surface is oriented along preset plane. Slot for the orthodontic wire arc has a quadrangular cross-section defined at least in part by 4 indirect angles. Orthodontic wire arc slot has a cross-sectional shape forming a rhomboid. According to the third embodiment, the orthodontic bracket additionally comprises a movable shutter and separate ribs. Moving shutter has front and rear surfaces, is configured to interact with possibility of shifting with bracket body and additionally move between closing and non-closing positions relative to slot for orthodontic wire arc. Posterior surface of movable shutter additionally forms at least partially quadrangular in cross-section section slot for orthodontic wire arc, when movable shutter is located in closing position relative to slot for orthodontic wire arc, wherein front surface of movable shutter lies substantially along plane formed by bracket body. Separate ribs are installed on front surface of movable shutter and maintain angular orientation of movable shutter when it moves between closing and non-closing positions. According to the fourth embodiment, the orthodontic bracket additionally comprises a bracket plate and body. Plate is attached with possibility of removal to a front tooth surface of a patient subjected to a protocol of orthodontic treatment. Bracket body is made integral with plate and extends from front to outside relative to plate. In compliance with fifth embodiment of orthodontic bracket, slot for orthodontic wire arc features cross-section shape forming parallelogram. Bracket housing interacts with the movable shutter, which can be in the first non-closing position providing access to the slot for the orthodontic wire arc and allowing to orient orthodontic wire arc in slot for orthodontic wire arc; and a second closing position, which holds, with possibility of release, an orthodontic wire arc in working orientation in a slot for an orthodontic wire arc. Front surface of the movable shutter has opposite peripheral edges interacting with the bracket body with possibility of movement. Orthodontic bracket body additionally comprises separate out-of-front ribs oriented in parallel with gaps relative to opposite peripheral edges, which additionally engage with possibility of bracket body movement to support movable shutter, at its location in closing position, in specified orientation to preserve quadrangular shape of slot for orthodontic wire arc. In compliance with sixth embodiment of orthodontic brace, at least one of 4 angles making quadrangular cross-section section for orthodontic wire arc has rounded corner of preset curvature. 
     EFFECT: orthodontic bracket according to the present invention does not allow shortcomings and shortcomings associated with passive self-ligating dental braces of the prior art; eliminates bending of associated with it orthodontic wire arc to provide preset value of moment of forces and communication of preset, clinically significant movement to patient's tooth and also provides the clinicians with the additional clinical capability in providing the first, second or third order control for the problematic abnormal teeth, for example, upper and lower canines, which are often difficult for the clinician to correct. 
     30 cl, 24 dwg