Method and system for fabricating a dental coping, and a coping fabricated thereby
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-013/00
G06F-017/50
B33Y-050/02
G05B-019/4097
A61C-013/20
출원번호
US-0720426
(2015-05-22)
등록번호
US-9844429
(2017-12-19)
발명자
/ 주소
Kopelman, Avi
Taub, Eldad
출원인 / 주소
Align Technology, Inc.
대리인 / 주소
Wilson Sonsini Goodrich & Rosati
인용정보
피인용 횟수 :
0인용 특허 :
164
초록
A wax model of a required coping is produced using CNC machining techniques based on a virtual model of the coping created from digital data obtained from the intraoral cavity. The dental coping is then fabricated from the wax model.
대표청구항▼
1. A system for fabricating a wax model of a dental coping shaped to fit over a tooth preparation in a patient's intraoral cavity, the system comprising: a wax material configured to be fabricated into the wax model of the dental coping;a milling machine configured to fabricate the wax model of the
1. A system for fabricating a wax model of a dental coping shaped to fit over a tooth preparation in a patient's intraoral cavity, the system comprising: a wax material configured to be fabricated into the wax model of the dental coping;a milling machine configured to fabricate the wax model of the dental coping from the wax material; andone or more computer-readable storage media comprising instructions that, when executed by a processor, cause the processor to: receive 3D digital data of the patient's intraoral cavity comprising the tooth preparation, the 3D digital data comprising an enamel thickness of the tooth preparation,generate, in response to the 3D digital data, a 3D virtual model of a dental coping based on the enamel thickness comprising an inner surface shaped to fit over at least a portion of the tooth preparation and an outer surface disposed between the inner surface and an outer surface of a tooth prosthesis, wherein the 3D virtual model of the dental coping is generated based on the enamel thickness of the tooth preparation,generate a computerized numerical control (CNC) set of wax fabrication instructions for fabricating the wax model of the dental coping based on the 3D virtual model of the dental coping, andtransmit the CNC set of wax fabrication instructions to the milling machine, wherein the CNC set of wax fabrication instructions is configured to cause the milling machine to fabricate the wax model of the dental coping from the wax material. 2. The system of claim 1, wherein the wax material is configured to be used in a lost wax process for fabricating the dental coping. 3. The system of claim 2, wherein the wax material comprises one or more of: a melting point from about 55° C. to about 80° C., a congealing point from about 55° C. to about 80° C., or a kinematic viscosity of less than about 90 m2/sec at about 100° C. 4. The system of claim 1, wherein the 3D virtual model of the dental coping comprises finish line data corresponding to a finish line of the tooth preparation. 5. The system of claim 4, wherein the finish line data is generated based on user input received by the processor. 6. The system of claim 4, wherein the finish line data is generated automatically by the processor. 7. The system of claim 1, wherein the 3D virtual model of the dental coping is generated according to a specified coping thickness for the dental coping. 8. The system of claim 1, wherein the 3D digital data comprises surface topology data of the patient's intraoral cavity. 9. The system of claim 8, wherein the surface topology data is generated by an optical scanner utilizing confocal focusing of an array of light beams. 10. The system of claim 1, wherein the tooth preparation comprises one or more tooth stumps, implants, or pivots. 11. The system of claim 1, wherein the tooth prosthesis comprises a crown prosthesis or a bridge prosthesis. 12. A method for fabricating a wax model of a dental coping shaped to fit over a tooth preparation in a patient's intraoral cavity, the method comprising: providing a wax material configured to be fabricated into the wax model of the dental coping;providing a milling machine configured to fabricate the wax model of the dental coping from the wax material; andproviding one or more computer-readable storage media comprising instructions that, when executed by a processor, cause the processor to: receive 3D digital data of the patient's intraoral cavity comprising the tooth preparation, the 3D digital data comprising an enamel thickness of the tooth preparation,generate, in response to the 3D digital data, a 3D virtual model of a dental coping based on the enamel thickness comprising an inner surface shaped to fit over at least a portion of the tooth preparation and an outer surface disposed between the inner surface and an outer surface of a tooth prosthesis, wherein the 3D virtual model of the dental coping is generated based on the enamel thickness of the tooth preparation,generate a computerized numerical control (CNC) set of wax fabrication instructions for fabricating the wax model of the dental coping based on the 3D virtual model of the dental coping, andtransmit the CNC set of wax fabrication instructions to the milling machine, wherein the CNC set of wax fabrication instructions is configured to cause the milling machine to fabricate the wax model of the dental coping from the wax material. 13. The method of claim 12, wherein the wax material is configured to be used in a lost wax process for fabricating the dental coping. 14. The method of claim 13, wherein the wax material comprises one or more of: a melting point from about 55° C. to about 80° C., a congealing point from about 55° C. to about 80° C., or a kinematic viscosity of less than about 90 m2/sec at about 100° C. 15. The method of claim 12, wherein the 3D virtual model of the dental coping comprises finish line data corresponding to a finish line of the tooth preparation. 16. The method of claim 15, wherein the finish line data is generated based on user input received by the processor. 17. The method of claim 15, wherein the finish line data is generated automatically by the processor. 18. The method of claim 12, wherein the 3D virtual model of the dental coping is generated according to a specified coping thickness for the dental coping. 19. The method of claim 12, wherein the 3D digital data comprises surface topology data of the patient's intraoral cavity. 20. The method of claim 19, wherein the surface topology data is generated by an optical scanner utilizing confocal focusing of an array of light beams. 21. The method of claim 12, wherein the tooth preparation comprises one or more tooth stumps, implants, or pivots. 22. The method of claim 12, wherein the tooth prosthesis comprises a crown prosthesis or a bridge prosthesis.
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