Title:
LITHIUM SILICATE GLASS-CERAMIC PROSTHESIS AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/082756
Kind Code:
A1
Abstract:
Provided are a lithium silicate glass-ceramic prosthesis and a preparation method therefor, comprising: formulating a basic glass material, and melting and water-quenching the basic glass material to form a glass frit; drying the glass frit, then grinding same into a basic glass powder having an average particle size of 1-50μm, mixing with a pigment and/or a fluorescent agent, then using dry-pressing or isostatic pressing processing to prepare a green ceramic blank; soaking the green ceramic blank in a high-transmittance staining solution or in a low-transmittance staining solution for 0.5-5 min; drying the soaked green ceramic blank, then sintering in a vacuum atmosphere to obtain a blank body; performing die casting on the obtained blank body using a hot die casting process so as to obtain a lithium silicate glass-ceramic prosthesis; or performing washing processing on the obtained blank body, and then performing final sintering to obtain a lithium silicate glass-ceramic prosthesis. The present application reduces production line changing time for a glass-ceramic prosthesis, reduces crucible maintenance costs, improves production efficiency, and is better suited to large-scale factory production.
Inventors:
HAN CHENGWEI (CN)
CHEN YONGQING (CN)
ZHENG HAIFENG (CN)
JIN TIANGANG (CN)
DENG HONGDA (CN)
CHEN YONGQING (CN)
ZHENG HAIFENG (CN)
JIN TIANGANG (CN)
DENG HONGDA (CN)
Application Number:
PCT/CN2022/113847
Publication Date:
May 19, 2023
Filing Date:
August 22, 2022
Export Citation:
Assignee:
SHENZHEN UPCERA DENTAL TECH CO LTD (CN)
International Classes:
C03C10/04; A61C13/083; C03B11/00; C03B23/00; C03C4/02; C03C4/12; C03C17/00
Foreign References:
CN113998894A | 2022-02-01 | |||
CN113264684A | 2021-08-17 | |||
CN104926370A | 2015-09-23 | |||
EP1961719A1 | 2008-08-27 | |||
CN101778807A | 2010-07-14 |
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
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