# US 2020/0401104 A1 · Ceramic processing for the direct manufacture of customized labial and lingual orthodontic brackets

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- Number: US 2020/0401104 A1
- Document ID: US20200401104A1
- Status: Published application
- Kind: A1
- Application number: 17/000,286
- Filed: 2020-08-22
- Published: 2020-12-24
- Earliest claimed: 2019-03-18
- Assignees: LightForce Orthodontics, Inc.
- Applicants: LightForce Orthodontics, Inc
- Inventors: Alfred Charles Griffin, III
- Web page: https://patentgrep.com/patent/US20200401104A1

## CPC

- G05B 19/4099: Surface or curve machining, making three-dimensional [3D] objects, e.g. desktop manufacturing
- A61B 6/032: {Transmission computed tomography [CT]}
- A61B 6/4085: {Cone-beams}
- A61C 7/002: {Orthodontic computer assisted systems}
- A61C 7/141: {Brackets with reinforcing structure, e.g. inserts}
- A61C 7/145: {Lingual brackets}
- A61C 7/146: {Positioning or placement of brackets; Tools therefor}
- A61C 7/20: Arch wires (A61C7/28 takes precedence)
- A61C 9/006: {projecting one or more stripes or patterns on the teeth}
- B33Y 80/00: Products made by additive manufacturing
- A61B 6/51: for dentistry
- A61C 7/16: specially adapted to be cemented to teeth
- G05B 2219/35134: 3-D cad-cam
- G05B 2219/45167: Dentist, dental manufacture
- G05B 2219/49013: Deposit layers, cured by scanning laser, stereo lithography SLA, prototyping
- G05B 2219/49023: 3-D printing, layer of powder, add drops of binder in layer, new powder
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

## Abstract

A method of manufacturing customized ceramic labial/lingual orthodontic brackets by digital light processing, said method comprises measuring dentition data of a profile of teeth of a patient, wherein measuring dentition data is performed using a CT scanner or intra-oral scanner, based on the dentition data, creating a three dimensional computer-assisted design (3D CAD) model of the patient's teeth using reverse engineering, and saving the 3D CAD model on a computer, designing a 3D CAD bracket structure model for a single labial or lingual bracket structure, importing the 3D CAD bracket structure model into a Digital Light Processing (DLP) machine, directly producing the bracket by layer manufacturing.

## Claims

### Claim 1

A method of manufacturing customized ceramic labial/lingual orthodontic brackets by digital light processing, said method comprising:
measuring dentition data of a profile of teeth of a patient;
based on the dentition data, creating a three dimensional computer-assisted design (3D CAD) model of the patient's teeth using reverse engineering, and saving the 3D CAD model on a computer;
designing a 3D CAD bracket structure model for a single labial or lingual bracket structure;
importing data related to the 3D CAD bracket structure model into a Digital Light Processing (DLP) machine;
directly producing the bracket in the DLP machine by layer manufacturing.