Dental Shaping Type Patents (Class 264/16)
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Patent number: 11925697Abstract: A photocurable dental impression material comprising: (a) a mixture of polymerizable silicone compounds each having two or more polymerizable (meth)acrylate groups, said mixture having a dynamic viscosity at 25° C. of from 1 to 100 Pas; (b) a filler; (c) a photo initiator system, wherein the mixture of polymerizable silicone compounds comprises based on the total weight of the mixture of polymerizable silicone compounds (a) 10 to 90 percent by weight of high-molecular polymerizable silicone compounds having a molecular weight in the range of from more than 4000 up to 10.000; and (b) 90 to 10 percent by weight of polymerizable silicone compounds having a molecular weight in the range of from 300 to 4000.Type: GrantFiled: March 7, 2019Date of Patent: March 12, 2024Assignee: DENTSPLY SIRONA INC.Inventors: Joachim Klee, Florian Szillat, Maximilian Maier, Marjorie Yon, Jacques Lalevée, Julie Kirschner, Fabrice Morlet-Savary, Céline Dietlin
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Patent number: 11918663Abstract: Disclosed herein are methods for creating opalescence in dental materials and restorations, compositions used in such methods, and the resultant dental materials and restorations. More particularly, the opalescence may be created by directly embedding opalescent particles into a matrix material. In some embodiments, photonic crystals are embedded in the dental material to achieve the opalescent effect. Photonic crystal particles may be embedded in dental materials matrices such as ceramics, composites, and polymers, and can generate opalescence in the materials. Some embodiments disclose compositions for applying the opalescence to a dental restoration.Type: GrantFiled: February 18, 2020Date of Patent: March 5, 2024Assignee: JENSEN INDUSTRIES INC.Inventor: Yoonho Jun
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Patent number: 11905207Abstract: The invention relates to glass ceramics and glasses with a europium content, containing the following components: Component wt.-% SiO2 30.0 to 75.0 Al2O3 10.0 to 45.0 Europium, calculated as Eu2O3 0.05 to 5.0 and which are suitable in particular for the production of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth.Type: GrantFiled: March 15, 2022Date of Patent: February 20, 2024Assignee: Ivoclar Vivadent AGInventors: Marc Dittmer, Ronny Hengst, Christian Ritzberger
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Patent number: 11897205Abstract: Systems and methods for fabricating a dental aligner are provided. The system includes a computing system to receive and prepare a digital model of a dental aligner by adding one or more support structures to the digital model. The system includes a fabrication system to manufacture the dental aligner with the one or more support structures. The system includes a laser system to receive the fabricated dental aligner, orient the dental aligner relative to the laser system, and laser cut an interface between the support structures and the dental aligner to remove the one or more support structures from the dental aligner.Type: GrantFiled: June 2, 2022Date of Patent: February 13, 2024Assignee: SDC U.S. SmilePay SPVInventors: Tim Wucher, John Dargis, Eric Wagnon, Drew Marschner, Charlotte Xia, Justin Kreil
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Patent number: 11864968Abstract: The present invention is related to the dentistry field. More precisely, the present invention relates to a system for insertion into the root canal for obtaining a root fastening element to support crowns comprising a sleeve of flexible and moldable material, non-adherent to the walls of the root canal, wherein the sleeve comprises a root section and a crown section which are filled with fibers in different arrangements. In addition, the present invention is related to a method for obtaining a fastening element using the system and root fastening element to support crowns.Type: GrantFiled: August 21, 2020Date of Patent: January 9, 2024Assignee: ANGELUS INDUSTRIA DE PRODUTOS ODONTOLOGICOS S/AInventors: Roberto Queiróz Martins Alcântara, Guilherme Guedes Moreno, Eduardo Lima Costa
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Patent number: 11819371Abstract: Described herein is a system for hybrid denture fabrication. The system improve the efficiency of the fabrication process for both the dental service provider (e.g., dentist, dental surgeon, etc.) and the patient. A permanent hybrid prosthesis (e.g., the bridge and its reinforcing bar) can be fabricated within 24 hours of the surgical procedure using the system described herein. This makes it possible to deliverer the permanent hybrid prosthesis within 48 hours (or even within 24 hours) of the surgical procedure. Additionally, the system eliminates the need to provide the patient with a temporary denture following the surgery. Further, the system substantially reduces the patient's chair-time and/or the number of patient visits.Type: GrantFiled: January 29, 2019Date of Patent: November 21, 2023Inventors: Joel David, Daniel Noorthoek, Miro Kalinowski
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Patent number: 11806202Abstract: A mill blank for dental CAD/CAM for preparing a dental restoration by being installed in a CAD/CAM device, wherein, the mill blank for dental CAD/CAM has a columnar shape, has at least two recesses which includes a first recess opening to an upper surface of the mill blank and a second recess opening to a bottom surface of the mill blank and at least one notched portion in a circumference portion, the first recess and the second recess respectively include a first surface which is parallel to the upper surface and the bottom surface and a second surface which is a circumferential face concentric with the circumferential face of the mill blank and is vertical to the first surface, and the notched portion is composed of a surface parallel to the center axis of the columnar shape of the mill blank and contacts with the second surface.Type: GrantFiled: August 17, 2017Date of Patent: November 7, 2023Assignee: SHOFU INC.Inventors: Yusei Kadobayashi, Masako Shigezawa
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Patent number: 11793613Abstract: The invention relates to a process for the production of a dental restoration, in which an oxide ceramic material (a) is subjected to a first heat treatment, (b) is subjected to a second heat treatment and (c) is cooled, wherein the heat treatment in step (a) is effected at lower pressure than the heat treatment in step (b).Type: GrantFiled: November 4, 2019Date of Patent: October 24, 2023Assignee: Ivoclar Vivadent AGInventors: Frank Rothbrust, Bo Jiang, Rudolf Jüssel, Christian Ritzberger
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Patent number: 11773462Abstract: The present invention provides an annealing separator composition, a grain-oriented electrical steel sheet and a method for manufacturing a grain-oriented electrical steel sheet. An annealing separator composition for a grain-oriented electrical steel sheet according to an embodiment of present invention comprising: on the basis of total solid 100 wt %, 5 to 70 wt % of mullite; and the remainder being magnesium oxide or magnesium hydroxide.Type: GrantFiled: December 21, 2017Date of Patent: October 3, 2023Assignee: POSCO CO., LTDInventors: Min Serk Kwon, Chang Soo Park, Heon-Jo Choi, Se-Min Park
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Patent number: 11752523Abstract: Methods for sorting and sequencing objects are provided. In some embodiments, a method includes receiving a plurality of objects, each object associated with an identifier including group data identifying a group to which the object belongs, and sequence data identifying a sequential position for the object within the group. The method can include determining the group data and the sequence data for each object by reading the identifier associated with the object; sorting the plurality of objects by directing each object into one of a plurality of buffer locations based on the group data for the object; and sequencing the set of objects associated with each buffer location by placing each object into a position within the corresponding set of objects based on the sequence data for the object.Type: GrantFiled: January 6, 2022Date of Patent: September 12, 2023Assignee: Align Technology, Inc.Inventors: James Clete Culp, Stanley E. Sankaran
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Patent number: 11744683Abstract: A dental resin composite comprising a thermally cured composition of polymeric resin monomers and inorganic fillers that comprise at least 80 wt % total filler loading is provided. Mill blocks made from the dental resin composite and produced via free radical polymerization under high-temperature (approximately 160° C. to 220° C.) and high-pressure process (approximately 300 MPa to 560 MPa) exhibited enhanced mechanical strength and good esthetics suitable for use in CAD/CAM indirect restorations such as, inlays, onlays, crowns and bridges.Type: GrantFiled: June 18, 2020Date of Patent: September 5, 2023Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Long Ling, Yumeng Ma
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Patent number: 11744684Abstract: Proposed is a method of manufacturing a dental composite blank. The method of manufacturing the dental composite blank includes (a) pressurizing a laminate for a composite blank having multiple layers having different colors at a first pressure (P1), (b) pressurizing the laminate for a composite blank, pressurized at the first pressure, at a second pressure (P2), and (c) manufacturing a composite blank by curing the pressurized laminate for a composite blank, in which steps (a) and (b) are each independently performed once or multiple times, and the first pressure (P1) is less than or greater than the second pressure (P2), ultimately making it possible to manufacture a dental composite blank that is similar to a natural tooth and thus exhibits a superior aesthetic appearance and high interlayer bonding strength.Type: GrantFiled: December 20, 2019Date of Patent: September 5, 2023Assignee: VERICOM CO., LTD.Inventors: Myung-Hwan Oh, Jong-Ho Kang, Hyun-Chul Yoo, Yun-Ki Kim
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Patent number: 11672632Abstract: The present invention relates to a novel multi-layered zirconia dental blank comprising at least two reverse layers. Further, the invention relates to a process for the preparation of such a multi-layered zirconia dental blank. The invention also relates to the use of such a multi-layered zirconia dental blank for the production of a dental article. Preferred dental articles are artificial teeth, inlays, onlays, bridges, crowns, veneers, facings, crown frameworks, bridged frameworks, implants, abutments, copings or orthodontic appliances. Moreover, the invention relates to a process for producing a dental article out of such a multi-layered zirconia dental blank.Type: GrantFiled: October 5, 2020Date of Patent: June 13, 2023Assignee: pritidenta GmbHInventors: Berthold Reusch, David Figge
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Patent number: 11633267Abstract: A dental blank for the manufacture of a dental restoration. The dental blank comprises a dental block and an insert with an opening facing toward an outer surface of the dental blank. The insert comprises at least one positioning element for the positioning of an abutment.Type: GrantFiled: June 12, 2018Date of Patent: April 25, 2023Assignee: COLTÈNE/WHALEDENT AGInventors: Nicolàs Gutiérrez Robledo, Ralf Boehner
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Patent number: 11628617Abstract: Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.Type: GrantFiled: October 22, 2020Date of Patent: April 18, 2023Assignee: RICOH COMPANY, LTD.Inventors: Teruki Kusahara, Masaki Watanabe, Keiko Osaka, Mitsuru Naruse, Mariko Kojima, Yasuyuki Yamashita, Yoshihiro Norikane
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Patent number: 11560478Abstract: The present invention relates to a dental addition silicone impression material containing: an organopolysiloxane; and a nonionic surfactant, wherein the organopolysiloxane contains M units represented by the formula: R3SiO1/2, in which R is a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted aryl group, a substituted or an unsubstituted aralkyl group, a substituted or an unsubstituted alkoxy group or hydroxy group, and three R's are identical or different, and Q units represented by the chemical formula: SiO2.Type: GrantFiled: April 19, 2019Date of Patent: January 24, 2023Assignee: GC CorporationInventors: Yoshiya Kaminosono, Kyousuke Hirano
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Patent number: 11547638Abstract: The present invention relates to a glass ceramic for veneering a dental frame structure, wherein said glass ceramic is characterized by a high content of B2O3, to a process for the preparation thereof, and to the use thereof in the production of dental restorations.Type: GrantFiled: April 27, 2020Date of Patent: January 10, 2023Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KGInventors: Berit Gödiker, Michael Hackner
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Patent number: 11548825Abstract: Provided is at least any of a layered body, which has a change in texture derived from zirconia, particularly a change in translucency and is suitable as a dental prosthetic member, a precursor thereof, or a method for producing these. There is provided a layered body having a structure in which two or more layers containing zirconia containing a stabilizer are layered, the layered body including at least: a first layer containing zirconia having a stabilizer content of higher than or equal to 4 mol %; and a second layer containing zirconia having a stabilizer content different from that of the zirconia contained in the first layer.Type: GrantFiled: February 26, 2020Date of Patent: January 10, 2023Assignee: TOSOH CORPORATIONInventors: Yuki Ushio, Akiko Ito, Sho Azechi, Hiroyuki Fujisaki
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Patent number: 11542201Abstract: There is provided at least any of a layered body which has a change in color tone and in which it is unnecessary to select a colorant and the content of the colorant in consideration of a difference in the sintering behavior between layers, a precursor thereof, or a method for producing these. Provided is a layered body which has a structure, in which two or more layers containing stabilizer-containing zirconia and a colorant are layered, and in which types and contents of the colorants contained in the layers are equal to each other, the layered body including at least: a first layer containing a colorant and zirconia which has a stabilizer content of higher than or equal to 3.3 mol %; and a second layer containing a colorant and zirconia which has a stabilizer content different from that of the zirconia contained in the first layer.Type: GrantFiled: February 26, 2020Date of Patent: January 3, 2023Assignee: TOSOH CORPORATIONInventors: Yuki Ushio, Yuuki Ito, Sho Azechi, Hiroyuki Fujisaki
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Patent number: 11542384Abstract: An additive article stabilizing method includes prior to polymerization, adding a radiation-activated stabilizing composition to a liquid resin, forming the article from the liquid resin, layer by layer, using radiation such that the stabilizing composition does not stabilize the liquid resin but the formed article, and neutralizing free radicals generated during a degradation process initiated by exposure of the article to additional radiation post-cure.Type: GrantFiled: January 15, 2018Date of Patent: January 3, 2023Assignee: Ford Global Technologies, LLCInventors: Emily Ann Ryan, Mark Edward Nichols, Ellen Cheng-Chi Lee, Christopher Michael Seubert, Deborah Frances Mielewski, Nicholas Ryan Gunther, Matthew Linden Bedell
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Patent number: 11534276Abstract: In a functionalization method for use in dentistry, and a method for same, the application device includes a support for receiving a partially processed shaped dental part for producing a dental restoration, and a dispensing device for the at least partial infiltration of a functionalization material onto the surface of the shaped dental part.Type: GrantFiled: September 15, 2017Date of Patent: December 27, 2022Assignee: bredent GmbH & Co. KGInventor: Joachim Meyer
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Patent number: 11523881Abstract: Embodiments relate to an aligner breakage solution that tests progressive damage to an aligner. A method includes gathering a digital model representing an aligner for a dental arch of a patient, and simulating progressive damage to the aligner. Simulating progressive damage for a region of the aligner comprises simulating, using at least the digital model, a sequence of loads on the aligner, determining an amount of damage to the region of the aligner for each load, and after each simulation of a load on the aligner, updating the digital model based on the amount of damage to the region of the aligner. The method further includes determining whether a damage criterion is satisfied for at least one region of the aligner and determining whether to implement one or more corrective actions for the aligner.Type: GrantFiled: September 26, 2019Date of Patent: December 13, 2022Assignee: Align Technology, Inc.Inventors: Yuxiang Wang, Rohit Tanugula, Reza Shirazi Aghjari, Chunhua Li, Jun Sato, Luyao Cai, Kangning Su
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Patent number: 11510618Abstract: A mouth guard senses impact forces and determines if the forces exceed an impact threshold. If so, the mouth guard notifies the user of the risk for injury by haptic feedback, vibratory feedback, and/or audible feedback. The mouth guard system may also remotely communicate the status of risk and the potential injury. The mouth guard uses a local memory device to store impact thresholds based on personal biometric information obtained from the user and compares the sensed forces relative to those threshold values. The mouth guard and its electrical components on the printed circuit board are custom manufactured for the user such that the mouth guard provides a comfortable and reliable fit, while ensuring exceptional performance.Type: GrantFiled: December 20, 2019Date of Patent: November 29, 2022Assignee: Force Impact Technologies, Inc.Inventors: Anthony M. Gonzales, Robert M. Merriman, Susan M. Merriman, Christopher T. Cooper
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Patent number: 11491707Abstract: Provided is a three-dimensional modeling material used for a fused deposition modeling three-dimensional printer. The three-dimensional modeling material has a multilayer structure and contains, in respective different layers, a thermoplastic resin (A) having a shear storage elastic modulus (G?) of 1.00×107 Pa or less as measured at 100° C. and 1 Hz and a thermoplastic resin (B) having a shear storage elastic modulus (G?) of more than 1.00×107 Pa as measured at 100° C. and 1 Hz.Type: GrantFiled: July 29, 2020Date of Patent: November 8, 2022Assignee: Mitsubishi Chemical CorporationInventors: Akiko Hirano, Shigeyuki Furomoto
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Patent number: 11426332Abstract: The invention is related to a shaded porcelain system that contains two types of veneering porcelains: natural enamel/dentin body and opal enamel, as well as stain & glaze porcelain, with CTE that are compatible to and which can be used for veneering a dental prosthesis made of 1) lithium disilicate-based glass-ceramic substructure that is formed by hot pressing or CAD/CAM machined process or 2) YTZP zirconia-based ceramic substructure that is formed by CAD/CAM machined process in order to improve overall esthetics of final prosthesis.Type: GrantFiled: October 10, 2017Date of Patent: August 30, 2022Assignee: DENTSPLY SIRONA INC.Inventors: Slawomir Banasiak, Vicky Nemzer, Christopher Chu, Dan Ammon
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Patent number: 11413120Abstract: A method for manufacturing a dental structure, a dental structure and a dental assembly, formed by a structure screwed on a dental implant relates to a manufacturing method of a dental structure intended to be located and screwed on a previously osseointegrated dental implant, as well as to the structure obtained according to said method and to the dental assembly formed by said structure and implant.Type: GrantFiled: January 21, 2016Date of Patent: August 16, 2022Assignee: TALLADIUM ESPANA, S.L.Inventor: Esteban Xam-Mar Mangrane
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Patent number: 11325858Abstract: Lithium silicate-low quartz glass ceramics are described which are characterized by a combination of very good mechanical and optical properties and can therefore be used in particular as restoration material in dentistry.Type: GrantFiled: October 18, 2019Date of Patent: May 10, 2022Assignee: Ivoclar Vivadent AGInventors: Christian Ritzberger, Markus Rampf, Wolfram Höland, Marc Dittmer, Marcel Schweiger
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Patent number: 11045295Abstract: A three-dimensional printing system including a feed source of uncured filled resin material, a print head configured to apply discrete layers of a composition including upconversion phosphors, and a radiation source configured to irradiate layers of uncured filled resin material and deposited layers of the composition is provided. A method of three dimensionally printing a dental article is also provided.Type: GrantFiled: November 15, 2016Date of Patent: June 29, 2021Assignee: DENTSPLY SIRONA Inc.Inventors: Naim Karazivan, Hui Lu, Thomas Ertl
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Patent number: 11045292Abstract: A zirconia sintered body is provided in which the strength between layers of powders is improved. A flexural strength of a test sample of the zirconia sintered body, measured pursuant to JISR1601, is not less than 1100 MPa. The test sample is formed by preparing a plurality of zirconia powders, each containing zirconia and a stabilizer that suppresses phase transition of zirconia, the zirconia powders differing in a composition, layering the zirconia powders to form a zirconia composition, and sintering the zirconia composition to form a zirconia sintered body. The flexural strength is measured such that a load point is positioned at a boundary of the zirconia powders, the boundary traversing the test sample of the sintered body along a direction of load application.Type: GrantFiled: July 28, 2020Date of Patent: June 29, 2021Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yoshihisa Yamada, Atsushi Matsumoto, Yoshihisa Ito
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Patent number: 10959814Abstract: A robotic system includes a base, a grounding arm, a working arm, and one or more sensors. The grounding arm extends from the base and is configured to be coupled to a fixed structure within the mouth of the patient for establishing an origin for the robotic system. The working arm extends from the base and is configured to be coupled with one or more tools for use during an installation of a dental implant in the mouth. The one or more sensors are for monitoring positions of the grounding arm and/or the working arm and to generate positional data that is used to create a post-operative virtual three-dimensional model of at least a portion of the mouth of the patient.Type: GrantFiled: November 4, 2015Date of Patent: March 30, 2021Assignee: Biomet 3I, LLCInventors: Zachary B. Suttin, Stephan S. Porter
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Patent number: 10939980Abstract: The invention relates to a method for planning a heat treatment of a dental prosthesis part (1), in which a 3D model (9) of the dental prosthesis part to be produced (1) already exists. A temperature profile (16) for the heat treatment of the dental prosthesis part (1) is automatically determined by a computer (17) as a function of determined geometric parameters (10, 11, 12, 13) of the dental prosthesis part to be produced (1) and/or of determined material parameters of the dental prosthesis part to be produced (1).Type: GrantFiled: December 18, 2014Date of Patent: March 9, 2021Assignee: DENTSPLY SIRONA Inc.Inventors: Peter Fornoff, Christian Schmidt
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Patent number: 10849724Abstract: This invention relates to printable high strength/toughness polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, orthodontic appliances, aligners, copings, frame patterns, crowns and bridges and the like. A DLP, stereolithography, modified or their modification and combination based printer is used to cure polymerizable material in several different methods of this invention to build-up the object. The resulting three-dimensional object has good dimensional stability.Type: GrantFiled: June 29, 2017Date of Patent: December 1, 2020Assignee: DENTSPLY SIRONA Inc.Inventors: Benjamin Jiemin Sun, Andrew M. Lichkus
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Patent number: 10842599Abstract: The invention relates to a method for the production of a dental restoration from a blank, which has regions or layers of ceramic materials with differing compositions, under use of the method steps, filling of the ceramic materials into a mold, pressing of the ceramic materials to form a blank, removal of the blank from the mold, temperature treatment of the blank, wherein the ceramic materials are filling into the mold in such a way that layers and/or regions after temperature treatment have a profile that is available as a digital set.Type: GrantFiled: December 27, 2016Date of Patent: November 24, 2020Assignee: DENTSPLY SIRONA INC.Inventors: Lothar Volkl, Stefan Fecher
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Patent number: 10835354Abstract: A layered denture having at least one of an integrated layer, balanced occlusion, and a root approximating structure is disclosed. The resulting denture may be suitable for use without an underlying reinforcement bar and may provide enhanced aesthetics by approximating natural dentition and roots both above and below the gum line.Type: GrantFiled: December 26, 2017Date of Patent: November 17, 2020Assignee: Global Dental Science LLCInventors: Scott Keating, Johannes Petrus Michael Grobbee
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Patent number: 10781106Abstract: Disclosed is a method for separating nanodiamond clusters synthesized by a detonation method having a size of 100 nm˜1,000 nm into nanodiamonds of 100 nm or less—more specifically, into uniformly sized nanodiamonds in the range of 5 nm˜50 nm, free of metal and alkaline impurities and ready to quantitatively attach functional groups on the surface of the nanodiamonds for applications such as thin film precursor materials, drug delivery systems and cosmetics compositions.Type: GrantFiled: November 25, 2015Date of Patent: September 22, 2020Assignee: NANORESOURCEInventor: Myoungtaek Kwon
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Patent number: 10751147Abstract: A method of using hardenable dental articles. The method can include placing a film (30) onto a dental structure (40) to cover at least a portion of the dental structure (40); providing a hardenable dental article (10); and applying the hardenable dental article (10) to the dental structure (40) covered by the film (30).Type: GrantFiled: March 21, 2016Date of Patent: August 25, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Jie Yang, Naimul Karim, Todd D. Jones, Dwight W. Jacobs, Steven Keck, Kristen Keller, Richard Yufeng Liu
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Patent number: 10723100Abstract: A fiber-reinforced resin molding includes a core layer and a pair of skin layers. The core layer includes a nonwoven fabric and impregnating resin that has been impregnated in the nonwoven fabric. The skin layers include fibers and a matrix resin that covers the fibers. The fibers and a matrix resin of the skin layers are joined to both surfaces of the core layer. The skin layers each have recesses that are formed on side surfaces that face the core layer such that a portion of the fibers in the matrix resin are exposed, and where portions of the nonwoven fabric and the impregnating resin have penetrated the recesses.Type: GrantFiled: May 2, 2016Date of Patent: July 28, 2020Assignees: Nissan Motor Co., Ltd., Renault S.A.S.Inventor: Takeshi Yoshida
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Patent number: 10689491Abstract: In one embodiment, a silicone-based ink for additive manufacturing includes a vinyl-terminated siloxane macromer, a hydrophobic reinforcing filler, and a rheology modifying additive. In another embodiment, a method of additive manufacturing with silicone-based ink includes adding a mixture that includes a vinyl-terminated siloxane macromer, a hydrophobic reinforcing filler, and a rheology modifying additive to a cartridge for additive manufacturing, extruding the mixture through the cartridge to form a structure, and curing the mixture to at least a predefined extent.Type: GrantFiled: September 29, 2017Date of Patent: June 23, 2020Assignee: Lawrence Livermore National Security, LLCInventors: Matt Durban, Eric Duoss, Jeremy Lenhardt, Thomas S. Wilson
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Patent number: 10614923Abstract: A method of forming one or more structures by additive manufacturing comprises introducing a first layer of a powder mixture comprising graphite and a fuel on a surface of a substrate. The first layer is at least partially compacted and then exposed to laser radiation to form a first layer of material comprising the fuel dispersed within a graphite matrix material. At least a second layer of the powder mixture is provided over the first layer of material and exposed to laser radiation to form inter-granular bonds between the second layer and the first layer. Related structures and methods of forming one or more structures are also disclosed.Type: GrantFiled: July 18, 2017Date of Patent: April 7, 2020Assignee: Battelle Energy Alliance, LLCInventors: Isabella J. Van Rooyen, Sean R. Morrell
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Patent number: 10610331Abstract: The invention relates to the field of dentistry and is intended for restoration/reconstruction of teeth decayed/fractured below the gum line using reinforcement technology of composite materials. The indirect atraumatic method for restoration/reconstruction of teeth decayed/fractured below the gum line comprises using a metal mesh-reinforced composite (MMC) dental prosthesis according to M. L. Melikyan, which is made by a laboratory method using gypsum models. The metal mesh-reinforced composite (MMC) dental prosthesis is comprised of a flexible crown-root wire pin and reinforcing crown-root frame assembly made from a mesh and free mesh wires. The walls of the crown part of the dental prosthesis are formed from a composite material.Type: GrantFiled: March 4, 2015Date of Patent: April 7, 2020Inventors: Melikset Litvinovich Melikyan, Karine Meliksetovna Melikyan
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Patent number: 10589460Abstract: The present invention relates to a method for producing three-dimensional objects based on computer data by repeated application in layers of a medium containing particulate material and selective solidification of the medium, whereby a feedstock made of medium in a build space is provided and a layer application of the medium takes place on a surface of the feedstock bordering the build space at an angle ? and a solidification according to computer data occurs by use of a solidification unit, characterized in that the feedstock is not moved during build-up of the object.Type: GrantFiled: February 28, 2013Date of Patent: March 17, 2020Assignee: VOXELJET AGInventors: Johannes Günther, Daniel Günther, Andreas Hartmann
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Patent number: 10568722Abstract: A 3D virtual model of an intra oral cavity in which at least a part of a finish line of a preparation is obscured is manipulated in virtual space by means of a computer or the like to create, recreate or reconstruct finish line data and other geometrical corresponding to the obscured part. Trimmed virtual models, and trimmed physical models, can then be created utilizing data thus created. The virtual models and/or the physical models may be used in the design and manufacture of copings or of prostheses.Type: GrantFiled: June 6, 2019Date of Patent: February 25, 2020Assignee: Align Technology, Inc.Inventors: Avi Kopelman, Eldad Taub
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Patent number: 10485736Abstract: A method for preparing a multilayer-color composite material for use in dental department comprises: preparing multiple types of monochromatic composite material precursor powder different in color, carrying out dry-pressing and preforming on the precursor powder, so as to obtain a preformed green body; and then carrying out pressurization and heating processing on the preformed green body, so as to obtain a multilayer-color composite material that gradually changes in color from neck portions to incisal ends of teeth, so that the multilayer-color composite material has a higher similarity to the material of natural teeth.Type: GrantFiled: December 31, 2015Date of Patent: November 26, 2019Assignee: Shenzhen Upcera Dental Technology Co., LtdInventors: Hongjuan Wang, Yuexiu Qiu, Lianjun Sheng, Feng Shi
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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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Patent number: 10426583Abstract: A dental block for producing a dental prosthesis comprises a green body including zirconia and having a chemical composition including containing between 6.0 wt % or 7.5 wt % to 20 wt % of yttria (Y2O3). The green body has multiple different layers having a different chemical composition between adjacent layers. The green body has a pre-sintered translucency that is substantially the same across the multiple different layers, and subsequently has a post-sintered translucency and a post-sintered color intensity/chroma with an inverse relationship with the post-sintered translucency increasing in one direction across the multiple different layers and the post-sintered color intensity/chromes decreasing in the same direction across the multiple different layers. The green body can have a color component and a diameter of at least 90 mm and thickness of 10-25 mm.Type: GrantFiled: February 27, 2018Date of Patent: October 1, 2019Inventors: Yunoh Jung, Daniel Yonil Jung
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Patent number: 10398536Abstract: The invention relates to a method for processing a dental material (28), in particular pressing and curing a dental material, by means of —a molding insert (30) that has a pre-pressing area (22) which adjoins a molding area (14, 16), wherein the pre-pressing area (22) is designed to receive the dental material (28), and —a pressing furnace with a firing chamber (10) for receiving the molding insert (30).Type: GrantFiled: December 18, 2014Date of Patent: September 3, 2019Assignee: Ivoclar Vivadent AGInventor: Rudolf Jussel
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Patent number: 10376343Abstract: The invention relates to the use of lithium silicate glass ceramics and glasses with rubidium oxide content for coating an oxide ceramic, a metal or an alloy.Type: GrantFiled: April 8, 2014Date of Patent: August 13, 2019Assignee: Ivoclar Vivadent AGInventors: Volker Rheinberger, Markus Rampf, Marc Dittmer, Christian Ritzberger, Wolfram Höland, Marcel Schweiger
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Patent number: 10307345Abstract: Disclosed herein is a dental impression material that includes a two part addition curing silicone composition. The disclosed impression material contains a surfactant system composed of a fluorosurfactant and a fatty alcohol ethoxylate. The impression material disclosed herein exhibits improved storage stability than known systems using fluorosurfactants and silicone ether compounds.Type: GrantFiled: November 2, 2016Date of Patent: June 4, 2019Assignee: DENTSPLY SIRONA Inc.Inventor: Christos Angeletakis
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Patent number: 10138330Abstract: Described herein is a highly effective route towards the controlled and isotropic reduction in size-scale, of complex 3D structures using silicone network polymer chemistry. In particular, a class of silicone structures were developed that once patterned and cured can ‘shrink’ micron scale additive manufactured and lithographically patterned structures by as much as 1 order of magnitude while preserving the dimensions and integrity of these parts. This class of silicone materials is compatible with existing additive manufacture and soft lithographic fabrication processes and will allow access to a hitherto unobtainable dimensionality of fabrication.Type: GrantFiled: May 2, 2017Date of Patent: November 27, 2018Assignee: Lawrence Livermore National Security, LLCInventors: James Lewicki, Marcus A. Worsley
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Patent number: 10125054Abstract: A method and apparatus for producing a dental restoration with enhanced adhesive or bonding strength are disclosed. The dental restoration comprises a zirconia based crown and a porcelain layer built-up on a top surface of the zirconia based crown. The zirconia based crown is to be bonded to a top of an abutment tooth and has dimensions that are smaller than outer dimensions of the abutment tooth. A first surface of the zirconia based crown is configured to adhere to the abutment tooth and a second surface of the zirconia based crown is configured to receive the porcelain layer built-up. The first surface and the second surface of the zirconia based crown are treated with a surface treatment solution which includes at least nitric acid (HNO3), hydrofluoric acid (HF) and hydrogen peroxide (H2O2). Further, the zirconia based crown may be treated with an ultrasonic impact treatment in addition to the surface treatment of the zirconia based crown.Type: GrantFiled: February 24, 2016Date of Patent: November 13, 2018Inventors: Chang Taek Lee, Rafael Wonjun Choi