Title:
METHOD AND APPARATUS FOR CALCULATING DENTAL MOVEMENT AMOUNT BEFORE AND AFTER ORAL ORTHODONTIC TREATMENT
Document Type and Number:
WIPO Patent Application WO/2021/174479
Kind Code:
A1
Abstract:
Provided are a method and apparatus for calculating a dental movement amount before and after oral orthodontic treatment. The method comprises: performing registration on the basis of a fluoroscopic oral image before treatment and a facial scanning image after treatment to obtain a dental model before treatment and a facial soft tissue model after treatment in the same coordinate system; performing registration and alignment on the basis of the facial scanning image after treatment and a dental crown laser scanning image after treatment to obtain a dental crown model after treatment and a facial soft tissue model after treatment in the same coordinate system; and on the basis of the dental model before treatment and the dental crown model after treatment in the same coordinate system, independently registering each tooth before treatment on the dental crown model after treatment to obtain each dental model after treatment, and then calculating and obtaining the movement amount of each tooth before and after orthodontic treatment. In the method, on the basis of a multi-source oral three-dimensional image, the accurate calculation of the overall movement amount of teeth before and after treatment can be realized only by means of performing fluoroscopic oral image scanning on a patient once before treatment.
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Inventors:
GAN YANGZHOU (CN)
XIA ZEYANG (CN)
XIONG JING (CN)
XIA ZEYANG (CN)
XIONG JING (CN)
Application Number:
PCT/CN2020/077917
Publication Date:
September 10, 2021
Filing Date:
March 05, 2020
Export Citation:
Assignee:
SHENZHEN INST ADV TECH (CN)
International Classes:
A61C19/04
Foreign References:
| CN110811653A | 2020-02-21 | |||
| CN108056829A | 2018-05-22 | |||
| CN108765474A | 2018-11-06 | |||
| CN109481045A | 2019-03-19 | |||
| US20170049535A1 | 2017-02-23 |
Attorney, Agent or Firm:
BEIJING CHENGHUI LAW FIRM (CN)
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