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    Dental prosthesis and moulding method
    7.
    发明授权
    Dental prosthesis and moulding method 有权

    公开(公告)号：US10646310B2

    公开(公告)日：2020-05-12

    申请号：US15328722

    申请日：2015-03-05

    申请人： John Fung

    发明人： John Fung

    IPC分类号： A61C13/08 ,  A61C13/09 ,  A61C13/15 ,  A61C13/271 ,  A61C5/73 ,  A61C5/77 ,  A61C13/083 ,  A61C5/70 ,  A61C13/20

    摘要： A dental prosthesis is disclosed includes a prosthetic tooth element comprising ceramic and a veneer located on a surface of the prosthetic tooth element, the veneer comprising cured dental composite. The prosthetic tooth element can be fixed to a mount in a patient's mouth using the same dental composite used for the veneer. A method of forming a prosthetic tooth element is disclosed including filling a mould that is formed at least partially from flexible polymeric material with a dental mixture comprising ceramic, and applying pressure to the filled mould to form a prosthetic tooth element comprising ceramic with a roughened surface.

    Indirect Restoration Technology
    9.
    发明申请
    Indirect Restoration Technology 审中-公开

    公开(公告)号：US20190125489A1

    公开(公告)日：2019-05-02

    申请号：US16233764

    申请日：2018-12-27

    申请人： James R. Glidewell Dental Ceramics, Inc.

    发明人： Rodolfo Castillo ,  Robin A. Carden ,  Wolfgang Friebauer

    IPC分类号： A61C5/73 ,  A61C13/083 ,  A61C5/77 ,  A61C5/70 ,  C03B11/14

    摘要： Dental restorations such as crowns, are made from lithium silicate glass ceramic that is heated and pressed onto a metal substrate, the latter being shaped to an impression or scan of the area of the mouth to receive the restoration. The metal substrate is made from an alloy selected to exhibit a coefficient of thermal expansion which is slightly greater than the CTE of the lithium silicate. In a preferred embodiment, the CTE of the lithium silicate glass ceramic is in the range of 11.5 to 12.5 and the alloy is selected to have a CTE of 12 to 13.5. A palladium tin alloy provides that CTE in the preferred embodiment.

    PREFORMED DENTAL COMPOSITE CROWN, PROCESS OF PRODUCTION AND USE THEREOF
    10.
    发明申请
    PREFORMED DENTAL COMPOSITE CROWN, PROCESS OF PRODUCTION AND USE THEREOF 审中-公开

    公开(公告)号：US20190021815A1

    公开(公告)日：2019-01-24

    申请号：US16078455

    申请日：2017-02-22

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Andreas Herrmann ,  Gallus Schechner ,  Reinhold Hecht ,  Helmar B. Mayr ,  Malte Korten ,  Bernhard Hofmann ,  Gioacchino Raia ,  Till Meurer

    IPC分类号： A61C5/73 ,  A61C5/77 ,  A61C13/20

    摘要： The invention relates to a preformed dental composite crown being characterized by its shape and chemical composition, the shape being characterized as follows: having an occlusal top surface and depending buccal, mesial, distal and lingual side surfaces, the side surfaces being connected to each other and forming a crown cervix, the wall thickness of the crown at the crown cervix being lower than 0.6 mm; at least two of opposing depending side surfaces having a concave shape; the chemical composition of the material the preformed dental composite crown is made of being a hardened composition comprising the following components: nano-filler(s) in an amount from 20 to 70 wt. %, resin matrix in an amount from 20 to 75 wt. %, wt. % with respect to the weight of the chemical composition, the resin matrix comprising urethane(meth)acrylate(s) and (meth)acrylate(s) not comprising a urethane moiety. The invention also relates to a kit of parts comprising such a preformed dental composite crown, processes for producing such crowns and the use of such a crown for treating a dental tooth.