The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2026
Filed:
Apr. 15, 2019
Shenzhen Upcera Dental Technology Co., Ltd., Shenzhen, CN;
Lingling He, Benxi, CN;
Guoyi Song, Benxi, CN;
Cheng Hou, Benxi, CN;
Chengwei Han, Benxi, CN;
Zhongliang Zhao, Benxi, CN;
Jialing Li, Benxi, CN;
Shenzhen Upcera Dental Technology Co., Ltd., Shenzhen, CN;
Abstract
Disclosed is a pre-sintered ceramic block for a dental restoration, which has a low pre-sintering temperature, contains a silica main crystal phase, but does not contain or contains a small amount of lithium metasilicate crystal phase. The pre-sintered ceramic block has a low hardness, with a Vickers hardness of 0.5-3 GPa, which is significantly lower than that of a ceramic block containing a lithium metasilicate crystal phase, and same is suitable for dry machining and also wet machining when being machined into a dental restoration.