公开(公告)号：US20230320942A1

公开(公告)日：2023-10-12

申请号：US18333956

申请日：2023-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andreas HERRMANN ,  Gioacchino Raia ,  Malte Korten ,  Oliver Kappler ,  Bernhard Hofmann ,  Adrian Eckert ,  Helmar Mayr ,  Reinhold Hecht ,  Gallus Schechner ,  Rainer Guggenberger

IPC: A61K6/887 ,  A61C5/73 ,  A61K6/77 ,  A61K6/65 ,  A61K6/76 ,  A61K6/62 ,  A61K6/17 ,  C08L33/08 ,  C08L33/10 ,  C08L75/06

CPC classification number: A61K6/887 ,  A61C5/73 ,  A61K6/77 ,  A61K6/65 ,  A61K6/76 ,  A61K6/62 ,  A61K6/17 ,  C08L33/08 ,  C08L33/10 ,  C08L75/06

Abstract: The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s−1.
The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

公开(公告)号：US11696875B2

公开(公告)日：2023-07-11

申请号：US16622530

申请日：2018-06-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andreas Herrmann ,  Gioacchino Raia ,  Malte Korten ,  Oliver Kappler ,  Bernhard Hofmann ,  Adrian Eckert ,  Helmar Mayr ,  Reinhold Hecht ,  Gallus Schechner ,  Rainer Guggenberger

IPC: A61K6/887 ,  A61C5/73 ,  A61K6/77 ,  A61K6/65 ,  A61K6/76 ,  A61K6/62 ,  A61K6/17 ,  C08L33/08 ,  C08L33/10 ,  C08L75/06

CPC classification number: A61K6/887 ,  A61C5/73 ,  A61K6/17 ,  A61K6/62 ,  A61K6/65 ,  A61K6/76 ,  A61K6/77 ,  C08L33/08 ,  C08L33/10 ,  C08L75/06

Abstract: The invention relates to A curable composition for producing dental composite crowns, the composition comprising a resin matrix comprising polymerizable (meth)acrylate(s) not comprising a urethane moiety, polymerizable urethane(meth)acrylate(s), wherein the polymerizable (meth)acrylate(s) not comprising an urethane moiety are used in excess over the polymerizable urethane(meth)acrylate(s), a filler matrix comprising nanocluster(s), fumed silica in an amount below 8 wt. % with respect to the weight of the whole composition, an initiator system comprising photoinitiator(s), organic dye(s), the curable composition not comprising softener in an amount of more than 5 wt. % with respect to the weight of the whole composition, the curable composition having a viscosity below 150 Pa*s at 23° C. and a shear rate of 1 s−1. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

公开(公告)号：US11577453B2

公开(公告)日：2023-02-14

申请号：US17248456

申请日：2021-01-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar Mayr ,  Gioacchino Raia ,  Bernhard Hofmann ,  Adrian Eckert

IPC: B29C67/00 ,  B29C64/135 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/336 ,  B29C64/124 ,  B33Y50/02 ,  B29C64/393

Abstract: An additive manufacturing system has a light permeable base, a build carrier for holding a workpiece and a light source which is arranged to emit light through the light permeable base. The light permeable base and the build carrier are positionable relative to each other in a build dimension in which the workpiece is built up. The system further has a resin vat in which the light permeable base forms a wall portion thereof. The system further comprises a plurality of resin supplies for supplying different light hardenable resins in direct contact with each other in said vat. The system facilitates the rapid manufacturing of a dental restoration having a color gradation.

公开(公告)号：US20140372085A1

公开(公告)日：2014-12-18

申请号：US14366301

申请日：2012-12-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar Mayr ,  Gallus Schechned ,  HOLGER Hauptmann

IPC: A61C13/00 ,  G06F17/50

CPC classification number: A61C13/34 ,  A61C13/0004 ,  A61C13/082 ,  A61C13/09 ,  G06F17/50

Abstract: A method and system for making a dental restoration are provided. The method comprises the step of providing a computer model of a three-dimensional reference surface that is based for example on a tooth structure of a tooth to be restored in a patient's dentition. The method further comprises the steps of visualizing the three-dimensional reference surface, providing a user operable virtual material deposition tool, and using the virtual material deposition tool to deposit a plurality of differently colored layers on the reference surface. The system provides functionality to perform the method of the invention. The invention preferably helps maximizing optical and geometrical quality in a dental restoration.

Abstract translation: 提供了一种用于制造牙科修复体的方法和系统。 该方法包括提供基于例如在患者牙列中要恢复的牙齿的牙齿结构上的三维参考表面的计算机模型的步骤。 该方法还包括以下步骤：使三维参考表面可视化，提供用户可操作的虚拟材料沉积工具，以及使用虚拟材料沉积工具在参考表面上沉积多个不同颜色的层。 该系统提供执行本发明方法的功能。 本发明优选地有助于最大化牙科修复体中的光学和几何质量。