3m Innovative Properties Company

Solventum Intellectual Properties Company

Bk Giulini Gmbh

Lizenzgemeinschaft Wons U.a. Vertreten Durch Herrn Werner Wons

Anja Friedrich

Malte Korten

Bastian P Kirchner

Christian A Richter

Gioacchino Raia

Andreas G Herrmann

Daniel D Oberpertinger

James D Hansen

Michael Jahns

Gallus Schechner

Saswata Chakraborty

Rudolf Schmid

Benjamin C MacMurray

Thomas P Klun

Daniel J Skamser

Richard E Raby

Adrian S Eckert

Helmar B Mayr

Steven H Kong

Carsten Franke

Ralf M Paehl

Karl J L Geisler

Wolfgang Weinmann

John M Riedesel

Bernhard Hofmann

Hans R Schnagl

Dietmar Blees

Ralf Kelz

Thomas Müller

Wolfgang Hater

Thomas K Müller

Michaela Urban

Benjamin C Mac Murray

Philipp Jürgen Semmler

Karin Zanklmaier

Karl JL Geisler

Thomas K MÜLLER

Philipp Semmler

Werner Wons

Peter Schmidt

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 apparatus () includes a housing (), a chamber () disposed in the housing, at least two light emitting diodes (LEDs) () disposed within the housing (), and a user interface () disposed on an exterior () of the housing. The chamber () is adaptable to each of an open, closed, and hermetically sealed configuration. The chamber () includes a material transparent to actinic radiation and light from the LEDs () enters the chamber from more than one direction. The user interface () includes a display () and program switches () configured to adjust at least three operational parameters of the apparatus. The apparatus () further includes a vacuum pump () operatively coupled to the chamber (). The system includes the apparatus () and an article (). An article includes layers of at least one photopolymerized crosslinked composition and a low extractable component content. A method of post-curing an article includes obtaining an article (), placing the article in an apparatus (), inputting a post-cure program or accessing a saved post-cure program through the user interface (), and running the post-cure program. The post-cure program includes light intensity provided by a light source () and length of time of light provided by the light source (), plus a delay time between initiation of light provided by the light source () and initiation of vacuum pulled by the vacuum pump () and/or a delay time between initiation of vacuum pulled on an interior of the chamber () by the vacuum pump () and initiation of light provided by the light source ().

Apparatus, system, method of post-curing an article, and post-cured article

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

The present disclosure provides a method of making an orthodontic article. The method includes (a) providing a photopolymerizable composition; (b) selectively curing the photopolymerizable composition using actinic radiation to form an article in the shape of an orthodontic article including a number of layers of at least one photopolymerized polymer; and (c) moving the article and thereby generating a mass inertial force in the uncured photopolymerizable composition. The article has a first surface, and no more than 75% of the first surface has a slope magnitude greater than 2.5 degrees. Orthodontic articles are also provided, including an orthodontic article that is prepared according to the method. Orthodontic articles having low extractable component content are further provided. The mass inertial force tends to form a coating layer of uncured photopolymerizable composition on the article, and curing the coating layer can form a surface having low slope magnitude. The low slope magnitude may be correlated to a low haze of the surface of the article.

Orthodontic articles and methods of making and postprocessing same

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

A system () for washing a 3D-printed object (). The system () has a washing device () and a workpiece () that includes the 3D-printed object (). The washing device () has a container () that forms a process chamber () for receiving a liquid cleaning agent (), and the container () has an inlet () into the process chamber (). The workpiece () further has a support structure () that supports the 3D-printed object () and a base () supporting the support structure (). The base (), in a mating relationship with the inlet (), forms a restraint preventing the workpiece () from passing through the inlet () in a situation in which the workpiece () is placed with the 3D-printed object () located within the process chamber ().

System for washing a 3D-printed object

A dental material dispensing device has a plunger means which for dispensing the dental material is movable for urging at least one component of a dental material toward a dispensing area. The device further has cure control means with an energy source and a flow path on which the dental composition and/or the dental material flows past the energy source during dispensation. The device is operable for exposing the dental composition and/or the dental material to a specific energy by control of the energy source and/or by control of the speed of the flow of the dental composition and/or the dental material on the flow path. The device is configured for dispensing a coherent strand of dental material in a dispensing cycle. The device is further configured for operating in a first dispensing mode and additionally in a second dispensing mode during the same dispensing cycle. The ratio between the specific energy in the second dispensing mode and the specific energy in the first dispensing mode is smaller than 1.

Dental material dispensing device and a method of dispensing a dental material

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 device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography.

Device and method for progressively building up an object from a light hardenable material

The present invention relates to a delivery system () for the release of a dental composition mixed from two or optionally three components. The delivery system has a mixer (), a cartridge () with three compartments and a switchable bypass valve () for bypassing the third component from the mixer. The present application further relates to a method of dispensing a dental composition.

Delivery system for a dental composition

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Munich, Germany

Anja Friedrich