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公开(公告)号：US20220192804A1
公开(公告)日：2022-06-23
申请号：US17603563
申请日：2019-04-15
发明人： Lingling HE , Guoyi SONG , Cheng HOU , Chengwei HAN , Zhongliang ZHAO , Jialing LI
摘要： A pre-sintered porcelain block for dental restoration; the pre-sintered porcelain block does not contain crystal phases and has a Vickers hardness of 0.5-2 GPa. Due to a hardness which is significantly lower than that of the porcelain block containing a lithium metasilicate crystal phase, the pre-sintered porcelain block may be processed by using dry machining and can simultaneously be processed by using wet machining when being mechanically processed into a dental restoration shape.
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2.发明申请公开(公告)号：US20220177358A1
公开(公告)日：2022-06-09
申请号：US17603753
申请日：2019-04-15
发明人： Lingling HE , Guoyi SONG , Cheng HOU , Chengwei HAN , Zhongliang ZHAO , Jialing LI
摘要： 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. (FIG. 2)
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