公开(公告)号：US12214060B2

公开(公告)日：2025-02-04

申请号：US17273042

申请日：2019-08-22

Applicant: Solventum Intellectual Properties Company

Inventor： Michael Jahns ,  Jacqueline C. Rolf ,  Martin Goetzinger ,  Holger Hauptmann

IPC: A61K6/20 ,  A61C13/00 ,  A61C19/10 ,  A61K6/17 ,  A61K6/76 ,  A61K6/77 ,  A61K6/836 ,  C03C3/06 ,  C03C8/14 ,  C03C8/16

Abstract: The invention relates to a glazing composition suitable for glazing the surface a dental zirconia article. The glazing composition comprises a liquid, glass particles, and hydrophilic silica nano-particles. The invention also relates to a process for sintering a porous dental zirconia article with a glazing composition on its surface.

公开(公告)号：US11998408B2

公开(公告)日：2024-06-04

申请号：US18015338

申请日：2021-07-19

Applicant: Solventum Intellectual Properties Company

Inventor： Martin Goetzinger ,  Hans R. Schnagl

IPC: A61C13/00 ,  A61K6/802 ,  B01F23/60 ,  B01F27/231 ,  B01F27/806 ,  B28B3/00 ,  B28B11/24

CPC classification number: A61C13/0022 ,  A61K6/802 ,  B01F23/60 ,  B01F27/2312 ,  B01F27/806 ,  B28B3/00 ,  B28B11/24

Abstract: The invention relates to a process of manufacturing a dental milling block with a homogeneous color and/or translucency gradient. This process comprises the steps of providing a mold with a cavity having a z-direction and an x/y-direction, filling the cavity partially with a first powder up to a height H1, the first powder having a volume VP1 with a top and bottom surface, introducing a second powder on top of the first powder up to a height H2, the second powder having a volume VP2 with a top and bottom surface and, the top surface of the first powder being in contact with the bottom surface of the second powder and forming an intermediate region, providing a mixer unit with at least one rotatable mixing element, introducing the rotating mixing element in z-direction into the intermediate region, mixing the powder located in the intermediate region by rotating the mixing element, removing the rotating mixing element from the powder, compacting the powder, optionally applying heat to the compacted powder, the first powder differing from the second powder by its physical properties and/or chemical composition and/or color. The invention also relates to a process of producing a dental restoration using dental milling block obtainable according to this process.

公开(公告)号：US12059483B2

公开(公告)日：2024-08-13

申请号：US16975188

申请日：2019-02-21

Applicant: Solventum Intellectual Properties Company

Inventor： Holger Hauptmann ,  Martin Goetzinger ,  Jacqueline C. Rolf ,  Sybille Schmittner

IPC: A61K6/818 ,  A61K6/833 ,  C03C3/06 ,  C03C3/076 ,  C03C4/00 ,  C04B41/00 ,  C04B41/50 ,  C04B41/86 ,  C04B111/00 ,  C04B111/80

CPC classification number: A61K6/818 ,  A61K6/833 ,  C03C3/06 ,  C03C3/076 ,  C03C4/0021 ,  C04B41/0072 ,  C04B41/009 ,  C04B41/5022 ,  C04B41/86 ,  C04B2111/00836 ,  C04B2111/805

Abstract: The invention relates to a process of producing a dental zirconia restoration, the dental zirconia restoration having an outer and an inner surface, the process comprising the step of firing a porous dental zirconia restoration and a glass until the porous dental zirconia restoration is sintered, the glass being located during the firing step on at least a portion of the outer surface of the porous dental zirconia restoration, wherein the zirconia material of the porous dental zirconia restoration and the glass are selected such that during the firing step the glass infiltrates the pores of the porous dental zirconia restoration to an extent of not more than 5 μm in depth. The invention also relates to a sintered dental zirconia restoration obtainable by such a process and a kit of parts comprising a porous dental zirconia mill blank and a surface treating agent containing a glass for use in such a process.