# US 2019/0167386 A1 · Smart orthodontic bracket > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167386 A1 - Document ID: US20190167386A1 - Status: Published application - Kind: A1 - Application number: 16/268,539 - Filed: 2019-02-06 - Published: 2019-06-06 - Earliest claimed: 2017-07-19 - Inventors: Sreevatsan RAGHAVAN; Praful JAIN - Web page: https://patentgrep.com/patent/US20190167386A1 ## CPC - A61C 7/146: {Positioning or placement of brackets; Tools therefor} - A61B 5/14542: {for measuring blood gases (A61B5/14551 takes precedence)} - A61B 5/14552: {Details of sensors specially adapted therefor} - A61B 5/4547: {Evaluating teeth} - A61B 5/682: {Mouth, e.g., oral cavity; tongue; Lips; Teeth} - A61C 7/14: Brackets (A61C7/28 takes precedence); Fixing brackets to teeth - A61C 7/16: specially adapted to be cemented to teeth - A61C 19/04: Measuring instruments specially adapted for dentistry ({A61C5/44 takes precedence; testing vitality of teeth A61B5/0534;} radiation diagnosis specially adapted for dentistry A61B6/51) - G01L 1/16: using properties of piezoelectric devices - G01N 17/04: Corrosion probes - A61B 5/02416: {using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence)} - A61C 7/002: {Orthodontic computer assisted systems} - A61C 2204/005: using chip tag or any electronic identification mean, e.g. RFID - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract The present invention provides an orthodontic bracket system with at least one 3D piezoelectric sensor and at least one detachable RFID frequency transmitter tag for determining even the slightest change in initial setup of orthodontic bracket system and further notifying the subscriber electronically via laser scanner. The orthodontic bracket assembly comprises of orthodontic bracket for holding the tooth; at least one arch wire for connecting the orthodontic brackets; and at least one piezoelectric sensor. The removable pulse oximeter is placed at the periphery of the bracket to assess the pulp vitality. At least one detachable wireless frequency transmitter RFID tag on the tie-wing permits clinical recycling of the bracket and system allows an atomic absorption photo spectrometer to determine the corrosion characteristics of arch wire and further allows a handheld laser scanner to determine the centre of resistance and moment of force of tooth. ## Claims ### Claim 1 An orthodontic bracket assembly comprising of: a plurality of orthodontic bracket for holding teeth, said orthodontic bracket comprising a base glued to the teeth, a plurality of tie wings, and at least one arch wire interconnecting the plurality of orthodontic bracket; at least one RFID tag; and at least one 3D piezoelectric sensor; wherein, said at least one 3D piezoelectric sensor is placed at the base of the orthodontic bracket, said at least one 3D piezoelectric sensor senses a change in mechanical force exerted by the orthodontic bracket on teeth and produces a charge; said at least one 3D piezoelectric sensor is in communication with said at least one RFID tag through a relay wire; said at least one RFID tag is placed at the tie-wing of the orthodontic bracket to receive the charge produced by said 3D piezoelectric sensor and convert it into a machine readable data; said at least one RFID tag is detachable. ### Claim 2 (depends on 1) The orthodontic bracket assembly as claimed in claim 1, wherein said 3D piezoelectric sensor is welded on said orthodontic bracket base. ### Claim 3 (depends on 1) The orthodontic bracket assembly as claimed in claim 1, wherein said at least one RFID tag is connected to the at least one 3D piezoelectric sensor by at least one pin and socket joint. ### Claim 4 (depends on 1) The orthodontic bracket assembly as claimed in claim 1, wherein the change in mechanical force corresponds to tension on arch wires, pressure exerted on individual tooth, alignment of tooth such as crowding or spacing, broken arch wire, loose arch wire. ### Claim 5 (depends on 4) The orthodontic bracket assembly as claimed in claim 4, wherein said at least one RFID tag is detached during clinical recycling. ### Claim 6 (depends on 1) The orthodontic bracket assembly as claimed in claim 1, wherein the RFID tag comprises of a microprocessor, a memory, an analog to digital converter and an antenna. ### Claim 7 An orthodontic bracket system for monitoring variable factors of orthodontic bracket comprising of: an orthodontic bracket assembly comprising of: a plurality of orthodontic bracket for holding teeth, said orthodontic bracket comprising a base glued to the teeth, a plurality of tie wings, and at least one arch wire interconnecting the plurality of orthodontic bracket; at least one RFID tag; and at least one 3D piezoelectric sensor; a removable pulse oximeter; a laser scanner; a photo spectrometer; a central processing system comprising of a central processor and a visual display unit; wherein, variable factors of orthodontic bracket include but not limited to position, pulp vitality, corrosion characteristics of the orthodontic bracket assembly, change in mechanical force on teeth; said at least one 3D piezoelectric sensor is placed at the base of the orthodontic bracket, said at least one 3D piezoelectric sensor senses change in mechanical force exerted by the orthodontic bracket on teeth and produces a charge; said at least one RFID tag is placed at the tie-wing of the orthodontic bracket to receive the charge produced by said 3D piezoelectric sensor and convert it into a machine readable data; said removable pulse oximeter is attached to periphery of said orthodontic bracket for determining the pulp vitality; said photo spectrometer determines the corrosion characteristics of said arch wires of said orthodontic bracket assembly; said laser scanner scans the teeth at a height to determine the position of teeth; and said variable factors of orthodontic bracket are communicated to the central processing system to give an indication for clinical recycling to a clinician. ### Claim 8 (depends on 7) The system for monitoring variable factors of orthodontic bracket as claimed in claim 7, wherein said removable pulse oximeter is attached at the periphery of said orthodontic bracket to assess different pulpal conditions such as healthy pulp (PC), reversible pulpitis, irreversible pulpitis and pulpal necrosis. ### Claim 9 (depends on 7) The system for monitoring the variable factors of orthodontic bracket as claimed in claim 7, wherein the position of teeth is determined by calculating shift in centre of resistance using a laser scanner. ### Claim 10 (depends on 7) The system for monitoring the variable factors of orthodontic bracket as claimed in claim 7, wherein the change in mechanical force corresponds to the tension on arch wires, pressure exerted on individual tooth, alignment of tooth such as crowding or spacing, broken arch wire, loose arch wire. ### Claim 11 (depends on 7) The system for monitoring the variable factors of orthodontic bracket as claimed in claim 7, wherein said at least one RFID tag is detached during clinical recycling. ### Claim 12 (depends on 7) The system for monitoring the variable factors of orthodontic bracket as claimed in claim 7, wherein the arch wires of the orthodontic bracket assembly are removed for determining the corrosion characteristics and used again if not corroded. ### Claim 13 (depends on 7) The system for monitoring the variable factors of orthodontic bracket as claimed in claim 7, wherein the machine readable data is scanned through a laser scanner and transmitted to central processing system to give an indication for clinical recycling to a clinician.