公开(公告)号：US20170258565A1

公开(公告)日：2017-09-14

申请号：US15528617

申请日：2015-11-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bastian P. Kirchner ,  Till Meurer ,  Dajana Zimmermann

IPC: A61C13/08 ,  A61C13/083 ,  A61C13/34 ,  A61C13/00

CPC classification number: A61C13/082 ,  A61C5/77 ,  A61C13/0003 ,  A61C13/0006 ,  A61C13/0022 ,  A61C13/083 ,  A61C13/34 ,  A61C2201/002

Abstract: A method of making a dental restoration has the step of providing a precursor of the dental restoration. The dental restoration has at least a first and a second surface portion which are delimited by a physical boundary structure. The method further has the steps of applying a first coloring solution associated with the first surface portion onto the first surface portion, sintering the dental restoration precursor, and removing the physical boundary structure.

公开(公告)号：US10820971B2

公开(公告)日：2020-11-03

申请号：US15528617

申请日：2015-11-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bastian P. Kirchner ,  Till Meurer ,  Dajana Zimmermann

IPC: A61C13/08 ,  A61C5/77 ,  A61C13/00 ,  A61C13/083 ,  A61C13/34

Abstract: A method of making a dental restoration has the step of providing a precursor of the dental restoration. The dental restoration has at least a first and a second surface portion which are delimited by a physical boundary structure. The method further has the steps of applying a first coloring solution associated with the first surface portion onto the first surface portion, sintering the dental restoration precursor, and removing the physical boundary structure.

公开(公告)号：US20190021815A1

公开(公告)日：2019-01-24

申请号：US16078455

申请日：2017-02-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

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

Abstract: 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.

公开(公告)号：US11523888B2

公开(公告)日：2022-12-13

申请号：US16583548

申请日：2019-09-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James D. Hansen ,  Joseph C. Dingeldein ,  Gareth A. Hughes ,  Gopal B. Haregoppa ,  Bastian P. Kirchner ,  Till Meurer ,  Holger Hauptmann

IPC: A61C13/00

Abstract: An additively manufactured dental crown with a wall having a bottom edge and an occlusal portion joined with the wall opposite the bottom edge. The wall and occlusal portion form an interior surface and an opposing exterior surface. By using additive manufacturing and materials for such, the dental crown can have thin walls with a thickness of less than 300 microns at the thinnest portion of it and can include fine printed features such as identifiers, internal ribs, slots, porous meshes, and retention elements.

公开(公告)号：US20180098828A1

公开(公告)日：2018-04-12

申请号：US15288008

申请日：2016-10-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James D. Hansen ,  Joseph C. Dingeldein ,  Gareth A. Hughes ,  Gopal B. Haregoppa ,  Bastian P. Kirchner ,  Till Meurer ,  Holger Hauptmann

IPC: A61C13/00

CPC classification number: A61C13/0019 ,  A61C13/0004 ,  A61C13/0013

Abstract: An additively manufactured dental crown with a wall having a bottom edge and an occlusal portion joined with the wall opposite the bottom edge. The wall and occlusal portion form an interior surface and an opposing exterior surface. By using additive manufacturing and materials for such, the dental crown can have thin walls with a thickness of less than 300 microns at the thinnest portion of it and can include fine printed features such as identifiers, internal ribs, slots, porous meshes, and retention elements.

公开(公告)号：US20200015945A1

公开(公告)日：2020-01-16

申请号：US16583548

申请日：2019-09-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James D. Hansen ,  Joseph C. Dingeldein ,  Gareth A. Hughes ,  Gopal B. Haregoppa ,  Bastian P. Kirchner ,  Till Meurer ,  Holger Hauptmann

IPC: A61C13/00

Abstract: An additively manufactured dental crown with a wall having a bottom edge and an occlusal portion joined with the wall opposite the bottom edge. The wall and occlusal portion form an interior surface and an opposing exterior surface. By using additive manufacturing and materials for such, the dental crown can have thin walls with a thickness of less than 300 microns at the thinnest portion of it and can include fine printed features such as identifiers, internal ribs, slots, porous meshes, and retention elements.

公开(公告)号：US20180071062A1

公开(公告)日：2018-03-15

申请号：US15559201

申请日：2016-03-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bastian P. Kirchner ,  Till Meurer

IPC: A61C13/00 ,  A61C5/77 ,  A61C13/09 ,  A61C9/00

CPC classification number: A61C13/0004 ,  A61C5/77 ,  A61C9/0046 ,  A61C13/0006 ,  A61C13/0013 ,  A61C13/09

Abstract: A method of making a dental restoration has the steps of providing a three-dimensional model of a dental restoration, providing a three-dimensional virtual model (21) of an anterior incisal portion of a patient's tooth, superimposing the dental restoration model and the incisal portion model (21), and automatically recessing the dental restoration model, and thereby creating a reduced dental restoration model. The method helps combining the advantages of monolithic dental restorations and manual finishing.

公开(公告)号：US11534264B2

公开(公告)日：2022-12-27

申请号：US16813024

申请日：2020-03-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: A61C5/73 ,  A61C13/087 ,  A61C13/20 ,  A61C5/77 ,  A61K6/893

Abstract: 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.

公开(公告)号：US20200205935A1

公开(公告)日：2020-07-02

申请号：US16813024

申请日：2020-03-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: A61C5/73 ,  A61C13/087 ,  A61C13/20 ,  A61C5/77 ,  A61K6/893

Abstract: 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.