Patents by Inventor Robin A. Carden
Robin A. Carden 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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Publication number: 20230000591Abstract: A dental restoration device includes a sleeve having an exterior surface and an interior pocket that is at least partially filled with a dental cement, and a crown having an exterior surface and an interior surface that is mated to the exterior surface of the crown and bonded thereto by an adhesive disposed between the exterior surface of the sleeve and the interior surface of the crown.Type: ApplicationFiled: August 19, 2022Publication date: January 5, 2023Inventors: STEPHEN A. ZISKIND, Edwin Michael FIRST, Adam SZEREMETA, Robin A. CARDEN
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Publication number: 20230000592Abstract: A dental restoration device includes a sleeve having an exterior surface and an interior pocket that is at least partially filled with a dental cement, and a crown having an exterior surface and an interior surface that is mated to the exterior surface of the crown and bonded thereto by an adhesive disposed between the exterior surface of the sleeve and the interior surface of the crown.Type: ApplicationFiled: August 19, 2022Publication date: January 5, 2023Inventors: Stephen A. Ziskind, Edwin Michael First, Adam Szeremeta, Robin A. Carden
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Patent number: 11446116Abstract: A dental restoration device includes a sleeve having an exterior surface and an interior pocket that is at least partially filled with a dental cement, and a crown having an exterior surface and an interior surface that is mated to the exterior surface of the crown and bonded thereto by an adhesive disposed between the exterior surface of the sleeve and the interior surface of the crown.Type: GrantFiled: July 6, 2021Date of Patent: September 20, 2022Assignee: PERFECT FIT CROWNS, LLCInventors: Stephen A. Ziskind, Edwin Michael First, Adam Szeremeta, Robin A. Carden
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Publication number: 20220000582Abstract: A dental restoration device includes a sleeve having an exterior surface and an interior pocket that is at least partially filled with a dental cement, and a crown having an exterior surface and an interior surface that is mated to the exterior surface of the crown and bonded thereto by an adhesive disposed between the exterior surface of the sleeve and the interior surface of the crown.Type: ApplicationFiled: July 6, 2021Publication date: January 6, 2022Inventors: STEPHEN A. ZISKIND, Edwin Michael First, Adam Szeremeta, Robin A. Carden
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Patent number: 10456223Abstract: Methods and apparatus are disclosed to provide a patient with a monolithic ceramic dental restoration in one office visit. In some embodiments, a dentist is provided with a kit containing one or more machinable blocks, a chair-side milling machine to convert a selected machinable block into a finished dental restoration, and optionally, a scanner. Machinable blocks may have a fully sintered zirconia material solid body and a sintered zirconia mandrel. A plurality of machinable blocks may be provided in multiple shape, size, or shade selections.Type: GrantFiled: February 2, 2017Date of Patent: October 29, 2019Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Michael J. Selberis
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Publication number: 20190125489Abstract: Dental restorations such as crowns, are made from lithium silicate glass ceramic that is heated and pressed onto a metal substrate, the latter being shaped to an impression or scan of the area of the mouth to receive the restoration. The metal substrate is made from an alloy selected to exhibit a coefficient of thermal expansion which is slightly greater than the CTE of the lithium silicate. In a preferred embodiment, the CTE of the lithium silicate glass ceramic is in the range of 11.5 to 12.5 and the alloy is selected to have a CTE of 12 to 13.5. A palladium tin alloy provides that CTE in the preferred embodiment.Type: ApplicationFiled: December 27, 2018Publication date: May 2, 2019Inventors: Rodolfo Castillo, Robin A. Carden, Wolfgang Friebauer
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Patent number: 10202306Abstract: In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution that may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. In a method, the coloring solution is thoroughly mixed with the ceramic slurry, after which a ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia ceramic material used for making dental restorations.Type: GrantFiled: October 27, 2016Date of Patent: February 12, 2019Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 10196312Abstract: A colored ceramic powder is produced from a mixture of coloring solutions consisting of metallic salts that are introduced to a ceramic slurry and subsequently dried. The coloring solution may comprise for example of chosen metallic salts, a solvent, an organic solvent such as derivatives of propylene oxides, an acid and a possible binder. Once all the constituents are thoroughly mixed to a homogeneous state, the slip is dried to a powder form, which spray drying equipment can be used. The dried powder can then be subjected to an isostatic or biaxial press manufacturing process to create a green state ceramic body. Once pressed, the ceramic body can be subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia dental restorations.Type: GrantFiled: October 27, 2016Date of Patent: February 5, 2019Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 9790129Abstract: A process for fabricating pre-sintered zirconia blanks that are then computer machined and sintered to form dental appliances having highly advantageous features. The principal steps of a preferred embodiment of that process comprise; a) preparing a ceramic slurry of zirconia powder; b) subjecting the slurry to attrition milling down to about a 5-29 nm crystallite size; c) preparing a vacuum assisted and pressure assisted slip casting mold and pouring the milled slurry into the slip-casting mold; d) after casting, excess slurry is poured from the mold and a consolidated zirconia blank is removed; e) drying the blank and pre-sintering it to form solid blanks ready for CAD/CAM machining and sintering to net shape. The attrition is run with ball bearings that are of the sample material to prevent contamination. It also is run, up to 24 hours, to break down the crystallites to overcome the high density of zirconia.Type: GrantFiled: July 27, 2016Date of Patent: October 17, 2017Assignee: James R. Glidewell Dental Ceramics, Inc.Inventor: Robin A. Carden
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Publication number: 20170143456Abstract: Methods and apparatus are disclosed to provide a patient with a monolithic ceramic dental restoration in one office visit. In some embodiments, a dentist is provided with a kit containing one or more machinable blocks, a chair-side milling machine to convert a selected machinable block into a finished dental restoration, and optionally, a scanner. Machinable blocks may have a fully sintered zirconia material solid body and a sintered zirconia mandrel. A plurality of machinable blocks may be provided in multiple shape, size, or shade selections.Type: ApplicationFiled: February 2, 2017Publication date: May 25, 2017Inventors: Robin A. Carden, Michael J. Selberis
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Patent number: 9597265Abstract: Methods and apparatus that permit a dentist to provide a patient with a monolithic ceramic dental restoration (e.g., crown, bridge, or the like) in one office visit. In some embodiments, a dentist is provided with a kit containing one or more near net shape (NNS) millable blanks of various shapes and shades, chair-side software, and a chair-side milling machine to convert a selected millable blank into a finished, fully contoured restoration in about one hour or less. Each such millable blank may be, for example, a dental ceramic (e.g., fully sintered zirconia, fully crystallized lithium silicate, fully crystallized lithium disilicate, or the like) NNS component. In some embodiments, the NNS component includes an integral mandrel at a precise location and orientation to minimize the amount of milling time.Type: GrantFiled: May 23, 2013Date of Patent: March 21, 2017Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Michael J. Selberis
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Publication number: 20170044067Abstract: A colored ceramic powder is produced from a mixture of coloring solutions consisting of metallic salts that are introduced to a ceramic slurry and subsequently dried. The coloring solution may comprise for example of chosen metallic salts, a solvent, an organic solvent such as derivatives of propylene oxides, an acid and a possible binder. Once all the constituents are thoroughly mixed to a homogeneous state, the slip is dried to a powder form, which spray drying equipment can be used. The dried powder can then be subjected to an isostatic or biaxial press manufacturing process to create a green state ceramic body. Once pressed, the ceramic body can be subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia dental restorations.Type: ApplicationFiled: October 27, 2016Publication date: February 16, 2017Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Publication number: 20170044068Abstract: In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution that may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. In a method, the coloring solution is thoroughly mixed with the ceramic slurry, after which a ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia ceramic material used for making dental restorations.Type: ApplicationFiled: October 27, 2016Publication date: February 16, 2017Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 9512317Abstract: A colored ceramic powder is produced from a mixture of coloring solutions consisting of metallic salts that are introduced to a ceramic slurry and subsequently dried. The coloring solution may comprise for example of chosen metallic salts, a solvent, an organic solvent such as derivatives of propylene oxides, an acid and a possible binder. Once all the constituents are thoroughly mixed to a homogeneous state, the slip is dried to a powder form, which spray drying equipment can be used. The dried powder can then be subjected to an isostatic or biaxial press manufacturing process to create a green state ceramic body. Once pressed, the ceramic body can be subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia dental restorations.Type: GrantFiled: October 24, 2012Date of Patent: December 6, 2016Assignee: James R. Glidwell Dental Ceramics, Inc.Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 9505662Abstract: In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution that may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. In a method, the coloring solution is thoroughly mixed with the ceramic slurry, after which a ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia ceramic material used for making dental restorations.Type: GrantFiled: May 12, 2016Date of Patent: November 29, 2016Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Publication number: 20160332918Abstract: A process for fabricating pre-sintered zirconia blanks that are then computer machined and sintered to form dental appliances having highly advantageous features. The principal steps of a preferred embodiment of that process comprise; a) preparing a ceramic slurry of zirconia powder; b) subjecting the slurry to attrition milling down to about a 5-29 nm crystallite size; c) preparing a vacuum assisted and pressure assisted slip casting mold and pouring the milled slurry into the slip-casting mold; d) after casting, excess slurry is poured from the mold and a consolidated zirconia blank is removed; e) drying the blank and pre-sintering it to form solid blanks ready for CAD/CAM machining and sintering to net shape. The attrition is run with ball bearings that are of the sample material to prevent contamination. It also is run, up to 24 hours, to break down the crystallites to overcome the high density of zirconia.Type: ApplicationFiled: July 27, 2016Publication date: November 17, 2016Inventor: Robin A. Carden
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Patent number: 9434651Abstract: A process for fabricating pre-sintered zirconia blanks that are then computer machined and sintered to form dental appliances having highly advantageous features. The principal steps of a preferred embodiment of that process comprise a) preparing a ceramic slurry of binderless zirconia powder; b) subjecting the slurry to attrition milling down to about a 5-29 nm crystallite size; c) preparing a vacuum assisted and pressure assisted slip casting mold and pouring the milled slurry into the slip-casting mold; d) after casting, excess slurry is poured from the mold and a consolidated zirconia blank is removed; e) drying the blank and pre-sintering it to form solid blanks ready for CAD/CAM machining and sintering to net shape. The attrition is run with ball bearings that are of the sample material to prevent contamination. It also is run, up to 24 hours, to break down the crystallites to overcome the high density of zirconia.Type: GrantFiled: May 26, 2012Date of Patent: September 6, 2016Assignee: James R. Glidewell Dental Ceramics, Inc.Inventor: Robin A. Carden
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Publication number: 20160251268Abstract: In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution that may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. In a method, the coloring solution is thoroughly mixed with the ceramic slurry, after which a ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia ceramic material used for making dental restorations.Type: ApplicationFiled: May 12, 2016Publication date: September 1, 2016Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 9365459Abstract: Coloring in a slip casting process by which a ceramic slurry is cast into green state bodies. It is during this slip casting that a coloring solution consisting of metallic salts is introduced to the slurry and subsequently slip-cast. A coloring solution may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. The solution is thoroughly mixed with the ceramic slurry, after which the ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia dental restorations.Type: GrantFiled: March 1, 2012Date of Patent: June 14, 2016Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Thomas C. Valenti, Frank A. Jimenez
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Patent number: 9095403Abstract: A coloring liquid especially for shading pre-sintered ceramic dental restorations, utilizes a combination of metal salt, solvent and acid to achieve natural tooth coloring of standard dental shades. By adjusting the respective ingredients, different shades can be provided and color penetration can be sufficient to preserve aesthetics in the sintered restoration even when some of the ceramic material is removed.Type: GrantFiled: October 13, 2012Date of Patent: August 4, 2015Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Robin A. Carden, Frank A. Jimenez