3m Innovative Properties Company

Solventum Intellectual Properties Company

3m Innovation Properties Company

Andreas G Herrmann

Malte Korten

Gallus Schechner

Bastian P Kirchner

Michael Jahns

Gioacchino Raia

Reinhold Hecht

Helmar B Mayr

Anja Friedrich

Daniel D Oberpertinger

Holger Hauptmann

Bernhard Hofmann

Brant Ulrick Kolb

Rainer A Guggenberger

Adrian S Eckert

Christian A Richter

Till Meurer

Oliver Kappler

Richard E Raby

Martin Goetzinger

Ralf M Paehl

Jacqueline C Rolf

Rainer K Dittmann

Hans R Schnagl

Grit Kindler

Dajana Zimmermann

Michaela Urban

Thomas K Müller

Marco Sartory

Karin Zanklmaier

Dajana Maria Anna Zimmermann

Philipp Jürgen Semmler

Rainer Dittmann

Philipp Semmler

The invention relates to a 3d-printed dental restoration precursor, a 3d-printed array comprising a 3d-printed dental restoration precursor, a kit of parts comprising at least two 3d-printed dental restoration precursors or 3d-printed dental restorations and a process of producing such a 3d-printed array, 3d-printed dental restoration precursor or 3d-printed dental restorations. The 3d-printed dental restoration precursor comprises at least one crown unit having an outer surface and an inner surface and at least one support element having a fixation section. The support element is connected through the fixation section to the outer surface of the crown unit in a particular region.

3D-printed dental restoration precursor with support element and process of production

A 3D printing system is disclosed, comprising a 3D printing device with a build plate and at least two workpiece holders, each having a manufacturing surface for additive manufacturing. The system includes an adapter with recesses for receiving portions of the workpiece holders, allowing the workpiece holders to be releasably attached to the build plate. The system also integrates post-processing devices controlled by a handling robot and a controller to streamline the manufacturing process, ensuring high precision and efficiency. Additionally, the disclosed technology covers a method for manufacturing at least two workpieces using the 3D printing system, which includes steps for hardening layers of material and removing workpieces post-production. Furthermore, the system includes an adapter set for attaching workpiece holders to the 3D printing device, enabling efficient transitions between different manufacturing stages and enhancing overall productivity.

3D printing system and method for manufacturing workpieces and adapter set for attaching workpiece holders to a 3D printing device

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. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

Curable composition for producing a dental composite crown and process of production

The present disclosure provides a build platform for use in an additive manufacturing device that is builds up an object from layers of a light-hardenable resin, wherein the build platform comprises a build surface for building up the object thereon, and wherein the build surface comprises a ceramic material. The disclosure also provides a method of making a build surface comprises a ceramic surface. Further, the disclosure provides additive manufacturing devices that include build platforms comprising ceramic material. The disclosure also describes articles made using the methods and devices described.

Build platform for use in an additive manufacturing device

A method of building up a physical object by additive manufacturing which has the steps of building up the object and at least one support structure layer by layer along a build axis. The support structure supports the object relative to a build platform. During building up the object and the at least one support structure a connection is provided between the support structure and the object by a plurality of layers each of which being a common layer of the object and the support structure.

Method of building up a physical object by additive manufacturing

A process of producing a surface-modified 3-dimensional article, the process comprising the steps of providing a radiation-curable composition, building-up a 3-dimensional article by radiation-curing the radiation-curable composition layer by layer, preferably by using a stereolithography or digital light processing unit, partially removing radiation-curable composition which sticks to the surface of the 3-dimensional article, treating only a portion of the surface of the 3-dimensional article to which the radiation-curable composition is stuck with particles, applying an additional curing step to the 3-dimensional article, preferably by applying heat and/or radiation. A 3-dimensional article which can be obtained by such a process and a kit of parts comprising such a 3-dimensional article.

Process of producing a surface-modified 3-dimensional article

The invention relates to a process of producing a surface-modified non-metallic dental article, the process comprising the steps of providing a non-metallic dental article having an outer and an inner surface, applying a curable composition on the inner surface of the dental article (to form a layer of the curable composition on the inner surface), applying particles on the curable composition located on the inner surface of the dental article to achieve a surface roughness Ra of 1 to 30 μm, curing the applied curable composition, the chemical composition of the curable composition being different from the chemical composition of the dental article. The invention also relates to a surface-modified non-metallic dental article obtained or obtainable by such a process and a kit of parts comprising such a surface-modified non-metallic dental article and a dental cement.

Process for producing a surface-modified dental article

A method of making a physical object by additive manufacturing. The method has the steps of providing a light hardenable primary material (), building up the object () by successively hardening portions of the light hardenable primary material () by irradiating the portions with light, coating at least a part of the object () with a light permeable coating or oxygen protective material; and irradiating the coated object () with light and thereby post-hardening any light hardenable material ().

Method of making a physical object

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&#xb0; C. and a shear rate of 1 s. The invention also relates to a cured article obtained by radiation curing this curable composition by use of an additive-manufacturing method.

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.

Preformed dental composite crown, process of production and use thereof

A method of making a physical object by additive manufacturing. In the method a hardenable primary material is provided, the object is built up by successively hardening layers of the hardenable primary material, and the object is cleaned from excess material by moving the object and thereby generating a mass inertial force in the excess material. The invention facilitates the making of objects by additive manufacturing.

Method of making a physical object by additive manufacturing

A method of making a monolithic dental restoration. The method includes the steps of providing a monolithic precursor of a dental restoration and firing the monolithic dental restoration precursor to provide the monolithic dental restoration. The zirconia material of both the dental restoration precursor as well as the dental restoration has a relative density of greater than 98% of the theoretic density of the zirconia material. The invention helps providing a color of a non-glazed dental restoration which resembles the color of a glazed dental restoration.

Method of making a dental restoration

Pediatric crown

Growing community of inventors

Munich, Germany

Andreas G Herrmann