Patents by Inventor Dmitri Brodkin
Dmitri Brodkin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8197299Abstract: Milling strategies for machining dental ceramic materials are provided that reduce milling time while maintaining strength, accuracy and marginal integrity.Type: GrantFiled: April 28, 2011Date of Patent: June 12, 2012Assignee: Ivoclar Vivadent AGInventors: Markus Heinz, Klaus Rinner, Georg Gorfer, Marius Aster, Marcel Schweiger, Dmitri Brodkin
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Patent number: 8173562Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.Type: GrantFiled: June 13, 2008Date of Patent: May 8, 2012Assignee: Ivoclar Vivadent AGInventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
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Patent number: 8002885Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: GrantFiled: August 31, 2010Date of Patent: August 23, 2011Assignee: Pentron Ceramics, Inc.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Publication number: 20110200966Abstract: Milling strategies for machining dental ceramic materials are provided that reduce milling time while maintaining strength, accuracy and marginal integrity.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: IVOCLAR VIVADENT, AGInventors: Markus Heinz, Klaus Rinner, Georg Gorfer, Marius Aster, Marcel Schweiger, Dmitri Brodkin
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Patent number: 7955159Abstract: Milling strategies for machining dental ceramic materials are provided that reduce milling time while maintaining strength, accuracy and marginal integrity.Type: GrantFiled: September 18, 2009Date of Patent: June 7, 2011Assignee: Ivoclar Vivadent AGInventors: Markus Heinz, Klaus Rinner, Georg Gorfer, Marius Aster, Marcel Schweiger, Dmitri Brodkin
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Publication number: 20110009254Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.Type: ApplicationFiled: July 9, 2010Publication date: January 13, 2011Applicant: Ivoclar Vivadent AGInventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Holand, Elke Apel, Christian Ritzberger, Dmitri Brodkin
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Publication number: 20100323328Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: ApplicationFiled: August 31, 2010Publication date: December 23, 2010Applicant: PENTRON CERAMICS INC.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Patent number: 7806694Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: GrantFiled: June 24, 2009Date of Patent: October 5, 2010Assignee: Pentron Ceramics, Inc.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Publication number: 20100058588Abstract: Milling strategies for machining dental ceramic materials are provided that reduce milling time while maintaining strength, accuracy and marginal integrity.Type: ApplicationFiled: September 18, 2009Publication date: March 11, 2010Applicant: IVOCLAR VIVADENT, AGInventors: Markus Heinz, Klaus Rinner, Georg Gorfer, Marius Aster, Marcel Schweiger, Dmitri Brodkin
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Publication number: 20100047743Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: ApplicationFiled: May 28, 2004Publication date: February 25, 2010Inventors: Dmitri Brodkin, Moisey y. Gamarnik
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Publication number: 20100038807Abstract: Solid free form fabrication techniques can be utilized indirectly to manufacture substrates, dies, models, near-net shapes, shells, and wax-ups that are then used in the manufacture of dental articles. Digital light processing is the most preferred indirect method for the production of substrates. After the substrates are produced, various coating or deposition techniques such as gel casting, slip casting, slurry casting, pressure infiltration, dipping, colloidal spray deposition or electrophoretic deposition are used to manufacture the dental article.Type: ApplicationFiled: October 28, 2009Publication date: February 18, 2010Applicant: PENTRON CERAMICS, INC.Inventors: Dmitri Brodkin, Carlino Panzera, Arun Prasad, Grant P. Day, Stefan Borenstein
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Patent number: 7655586Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: GrantFiled: May 28, 2004Date of Patent: February 2, 2010Assignee: Pentron Ceramics, Inc.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Publication number: 20090321971Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.Type: ApplicationFiled: June 24, 2009Publication date: December 31, 2009Applicant: PENTRON CERAMICS, INC.Inventors: Dmitri Brodkin, Moisey Y. Gamarnik
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Publication number: 20080318189Abstract: Solid free form fabrication techniques can be utilized indirectly to manufacture substrates, dies, models, near-net shapes, shells, and wax-ups that are then used in the manufacture of dental articles. Digital light processing is the most preferred indirect method for the production of substrates. After the substrates are produced, various coating or deposition techniques such as gel casting, slip casting, slurry casting, pressure infiltration, dipping, colloidal spray deposition or electrophoretic deposition are used to manufacture the dental article.Type: ApplicationFiled: July 31, 2008Publication date: December 25, 2008Applicant: IVOCLAR VIVADENT AGInventors: Dmitri Brodkin, Carlino Panzera, Arun Prasad, Grant P. Day, Stefan Borenstein
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Publication number: 20080303181Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.Type: ApplicationFiled: June 13, 2008Publication date: December 11, 2008Applicant: Ivoclar Vivadent AGInventors: Wolfram Holand, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
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Publication number: 20080274440Abstract: A dental implant abutment for attaching a dental prosthesis within a patient's mouth. The abutment is a single unit structure fabricated of a ceramic material, multicolored throughout to match the color of the dental prosthesis, the surrounding dentition and the surrounding gingival tissue.Type: ApplicationFiled: February 7, 2008Publication date: November 6, 2008Applicant: IVOCLAR VIVADENT AGInventors: Jeffrey Smith, Robert Ganley, Dmitri Brodkin, Armin Ospelt, Tobias Specht, Hans Peter Foser
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Publication number: 20080085828Abstract: Methods of forming a colored ceramic body or dental article are described that include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; and (c) firing the shaped body in an atmosphere comprising at least one coloring agent. Methods of forming a fully dense ceramic body that lacks discoloration, are also described which include: (a) forming a body from a ceramic-containing powder; (b) shaping the body into a desired shape; (c) placing the shaped body in a firing atmosphere containing at least one impurity that promote discoloration of the ceramic body; (d) placing the ceramic body in proximity to an atmosphere powder; and (e) firing the shaped body in proximity to an atmosphere powder; wherein the atmosphere powder acts as at least one of a barrier and a getter for the at least one impurity.Type: ApplicationFiled: August 17, 2007Publication date: April 10, 2008Applicant: Pentron Ceramics, Inc.Inventors: Ajmal Khan, Dmitri Brodkin
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Patent number: 7279238Abstract: A pressable dental ceramic comprising a mixture of glass and glass-ceramic frits. A refractory filler is also combined with the frits. The dental ceramic contains an amount of leucite less than about 35 percent by weight. Other additives may be included such as pigments, opacifying agents and fluorescing agents. The dental ceramic comprises a cellular-like microstructure comprised of glassy regions surrounded by clusters of leucite crystals distributed around those glassy regions forming a cellular three-dimensional network.Type: GrantFiled: August 22, 2003Date of Patent: October 9, 2007Assignee: Pentron Ceramics, Inc.Inventor: Dmitri Brodkin
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Patent number: 7011522Abstract: Ceramic precursor powders are combined with a binder and pressed into blocks or similar shapes to form green bodies. The ceramic powders consist of fairly uniform particles thoroughly dispersed to be essentially free of agglomerates such that it will sinter predictably and isotropically without appreciable distortion. The green bodies may be soft-sintered to a bisque density less than about eighty five percent of the final density. The soft-sintered blocks are then milled to a desired shape and sintered to a final density rendering a high strength dental restorative material. The material may be aluminum oxide, partially stabilized zirconium oxide, mixtures of the two, mullite or any suitable oxide that may be sintered to high strength (i.e., greater than 250 MPa).Type: GrantFiled: December 18, 2001Date of Patent: March 14, 2006Assignee: Pentron Ceramics, Inc.Inventors: Carlino Panzera, Dmitri Brodkin, Paul Panzera
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Patent number: 6994549Abstract: Solid free form fabrication techniques such as fused deposition modeling and three-dimensional printing are used to create a dental restoration. Three-dimensional printing comprises inkjet printing a binder into selected areas of sequentially deposited layers of powder. Each layer is created by spreading a thin layer of powder over the surface of a powder bed. Instructions for each layer may be derived directly from a CAD representation of the restoration. The area to be printed is obtained by computing the area of intersection between the desired plane and the CAD representation of the object. All the layers required for an aesthetically sound restoration can be deposited concurrently slice after slice and sintered/cured simultaneously. The amount of green body oversize is equivalent to the amount of shrinkage which occurs during sintering or curing.Type: GrantFiled: October 5, 2001Date of Patent: February 7, 2006Assignee: Jeneric/Pentron IncorporatedInventors: Dmitri Brodkin, Carlino Panzera, Paul Panzera