3m Innovative Properties Company

Solventum Intellectual Properties Company

Other

3m Innovation Properties Company

Solventum Intellectual Properties

Michael Jahns

Gallus Schechner

Holger Hauptmann

Martin Goetzinger

Malte Korten

Andreas G Herrmann

Helmar B Mayr

Jacqueline C Rolf

Bradley Dene Craig

Hans R Schnagl

Brant Ulrick Kolb

Rainer A Guggenberger

Adrian S Eckert

Christian A Richter

Bastian P Kirchner

Anja Friedrich

Markus Mikulla

Melissa A Lackey

Dajana Zimmermann

Grit Kindler

Christine M Andres

Joel D Oxman

Jimmie Rae Baran, Jr

Gioacchino Raia

Christoph H Thalacker

Karsten Dede

Afshin Falsafi

Carsten Franke

Mark J Hendrickson

Daniel D Oberpertinger

Robert F Peez

Mark B Agre

Wolfgang Weinmann

Kathleen M Humpal

Rainer K Dittmann

Bernhard Hofmann

Paul D Pennington

Peter Braun

Sybille A Schmittner

Bradley D Craig

Philipp Doebert

William V Chiu

Simone Raynoschek

Kathleen M Humpa

Marco Sartory

Dajana Maria Anna Zimmermann

Karin Zanklmaier

Rainer Dittmann

Jimmie R Baran

The invention relates to a process of producing a dental zirconia article, the process comprising the step of sintering a porous dental zirconia article, the sintering comprising a heat-treatment segment A characterized by a heating rate of at least 3 K/sec up to a temperature of at least 1,200° C., the porous dental zirconia article being composed of a zirconia material containing 6.0 to 8.0 wt. % yttria, 0.05 to 0.12 wt. % alumina and comprising a coloring component containing Tb, the porous dental zirconia article being essentially free of Fe components. The invention also relates to a process comprising the additional step of applying a glazing composition to the outer surface of the porous zirconia article before the heat-treatment or sintering is conducted.

Process for producing a colored dental zirconia article

Process for treating a porous dental zirconia block with a coloring solution, the process comprising the steps of providing a porous dental zirconia block having two opposing surfaces, surface U and surface L, treating the upper surface U of the porous dental zirconia block with a coloring solution A, wherein the coloring solution is provided with a volume VA, turning the porous dental zirconia block around, treating the lower surface L with a coloring solution Awhich is provided with a volume VA. wherein the coloring solutions Aand Acomprise a solvent and coloring ions, wherein the volume of at least one of the coloring solutions Aor Ais applied in portions, wherein the following condition is met: Vo=ΣV, with x≥2, with Vo being the overall amount of coloring solution used to infiltrate the porous dental zirconia block.

Process for treating a porous dental zirconia block with coloring solutions

The invention relates to a set of porous zirconia dental mill blanks comprising at least two differently colored porous zirconia dental mill blanks, the porous zirconia dental mill blanks comprising zirconia, yttria, coloring ions, and optionally alumina, comprising multiple layers with different yttria content, having a bottom layer and a top layer, the content of yttria and coloring ions in mol % changing in opposite direction to each other from the bottom layer to the top layer, and the content of yttria and coloring ions in mol % being adjusted to provide an essentially constant ratio of the sum of yttria and coloring ions in mol % between the top layer and the bottom layer for the at least two differently colored zirconia dental mill blanks. The invention also relates to a process of producing such a set.

Set of colored porous zirconia dental mill blanks and process of production

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.

Glazing composition for a dental zirconia article, process of sintering and kit of parts

The invention relates to a glazing composition for a porous dental zirconia article, the glazing composition comprising liquid, glass particles, fluorescing component(s) comprising europium, optionally hydrophilic silica nano-particles, and optionally hydrophobic silica nano-particles, wherein the fluorescing component(s) can be contained in the glass particles or as separate component. The invention also relates to a process for sintering a porous dental zirconia article with a glazing composition on its surface.

Fluorescent glazing composition for a dental zirconia article, process of sintering and kit of parts

The invention relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit comprising a Paste A and a Paste B, Paste A comprising water, acid-reactive inorganic filler A, non acid-reactive filler B1, sugar alcohol with 6 hydroxyl moieties, Paste B comprising water, polyacid, non acid-reactive filler B2, the sugar alcohol being present in an amount of not more than 2 wt. % and the water being present in an amount of not more than 15 wt. %, wt. % with respect to the whole composition obtained when mixing Paste A and Paste B. The invention also relates to a hardened glass ionomer composition for dental use obtained by mixing Paste A and Paste B of the kit of parts.

Storage stable glass ionomer composition and use thereof

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 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

The invention relates to the use of a printing sol as construction material in an additive manufacturing process for producing a 3-dim article, the printing sol comprising solvent(s), nano-sized crystalline zirconia particles in an amount from 2 to 25 vol.-% with respect to the volume of the sol, the average primary particle size of the nano-sized crystalline zirconia particles being in a range up to 50 nm, a first monomer being a polymerizable surface modification agent represented by formula A-B, with A being capable of attaching to the surface of the nano-sized crystalline zirconia particles and B being a radiation curable group, optionally a second monomer, the second monomer comprising at least one radiation curable moiety but no acidic or silane group(s), photo initiator(s). The invention also relates to a ceramic article obtainable according to such a process.

Sol containing nano zirconia particles for use in additive manufacturing processes for the production of 3-dimensional articles

Disclosed herein are curable glass ionomer compositions that include a first paste and a second paste, and methods for using the disclosed compositions. The first paste includes water, a polyacid, and a non acid-reactive filler. The second paste includes water, an acid-reactive filler; and non-aggregated, water-miscible, nano-sized silica particles having at least 25% surface coverage of the particles with a silane. The composition is essentially free of a resin. In some embodiments, the water content of the first paste and the second paste of the paste/paste GI composition disclosed herein is less than 20% by weight, based on the total weight of the composition.

Glass ionomer compositions and methods including water-miscible, silane-treated, nano-sized silica particles

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

Disclosed herein are curable glass ionomer compositions that include a first paste and a second paste, and methods for using the disclosed compositions. The first paste includes water, a polyacid, and a non acid-reactive filler. The second paste includes water and an acid-reactive filler. At least one of the first paste and the second paste further includes substantially crystalline inorganic fibers. In some embodiments, the water content of the first paste and the second paste of the paste/paste GI composition disclosed herein is less than 20% by weight, based on the total weight of the composition.

Glass ionomer compositions and methods including inorganic fibers

The invention relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit of parts comprising a Powder Part P and a Liquid Part L, Powder Part P comprising: acid-reactive inorganic filler, Liquid Part L comprising: water, complexing agent, polyacid, either the Powder Part P or the Liquid Part L or the Powder Part P and the Liquid Part L comprising non-aggregated nano-sized particles based on silica or alumina, the composition obtained by combining the components of Powder Part P and Liquid Part L before hardening comprising the components in the following amounts: non-aggregated nano-sized particles: from 0.1 to 15 wt.-%, acid-reactive filler in an amount from 50 to 75 wt.-%, polyacid: 7 to 20 wt.-%, complexing agent: 0.5 to 3 wt.-%, water: 5 to 18 wt.-%, wt.-% with respect to the weight of the whole composition.

Kit of parts for producing a glass ionomer cement, process of production and use thereof

The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23&#xb0; C., processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.

Additive manufacturing process for producing ceramic articles using a sol containing nano-sized particles

The present invention relates to a kit of parts comprising a dental mill blank comprising a porous zirconia material and a colouring solution for colouring the porous zirconia material. The porous zirconia material comprises Zr oxide calculated as ZrO2: from 80 to 97 wt.-%, Al oxide calculated as Al2O3: from 0 to 0.15 wt.-%, Y oxide calculated as Y2O3: from 1 to 10 wt.-%, Bi oxide calculated as Bi2O3: from 0.01 to 0.2 wt.-%, the porous zirconia material not comprising Fe calculated as Fe2O3 in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the porous zirconia material. The colouring solution comprises solvent(s), colouring agent(s) comprising metal ions selected from Tb, Er, Pr, Mn or combinations thereof, the solution not comprising Fe ions in an amount of more than 0.01 wt.-%, the solution not comprising Bi ions in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the colouring solution. The invention also relates to a process of producing a dental restoration, the process comprising the steps: providing a dental mill blank comprising a porous zirconia material as described in any of the preceding claims, machining an article out of the porous zirconia material, the article having the shape of a dental restoration with an outer and inner surface, providing a colouring solution as described in any of the preceding claims, applying the colouring solution to at least portions of the surface of the article having the shape of a dental restoration.

Kit of parts containing dental mill blank colouring solution

Growing community of inventors

Gilching, Germany

Michael Jahns