Patents Assigned to Coltene/Whaledent
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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: 11452584Abstract: A hollow-cylindrical device (1) having first and second openings (2, 3) for continuous production of a dental composite block. A curable composite material (4) and a temperature control unit (5) are provided. The composite material (4) is introduced into the device (1) through the first opening. The composite material (4) is cured by energy from the temperature control unit (5). An energy input occurs across a defined length of the substantially hollow-cylindrical device (1) and/or for a defined period of time. The composite material (4) is subsequently guided through the first opening (2) of the device (1). The composite material (4) is discharged from the second opening (3). In a first region along a portion of the length of the device, the device is either provided with an insulation or the flow-through device has a heat conductivity of 0.05 to 12 W/(m×K).Type: GrantFiled: September 22, 2016Date of Patent: September 27, 2022Assignee: COLTÈNE/WHALEDENT AGInventors: Cornelia Kopfmann, Ralf Böhner
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Publication number: 20220192783Abstract: An endodontic obturation point for obturating a dental root canal comprising a core material, an outer material and a coupling element for transmitting ultrasonic waves to the obturation point. The core material comprises an ultrasonic non-deformable material and the outer material comprises an ultrasonic deformable material.Type: ApplicationFiled: December 14, 2021Publication date: June 23, 2022Applicant: Coltène/Whaledent AGInventors: Benjamin Ezeh, Martin Schluter
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Patent number: 11305479Abstract: A cartridge (1) for a 3D printer, wherein the cartridge (1) has a nozzle or is designed in such a way that a predefined nozzle can be formed in the cartridge (1). The cartridge (1) contains a dental composite material, and the dental composite material comprises a curable, in particular a light-hardenable, matrix and only fillers having a maximum particle size of <5 ?m. The dental composite material has a viscosity, in a non-cured state, in the range of 1 to 10,000 Pa*s, preferably 10 to 2,000 Pa*s, more preferably between 50 to 800 Pa*s.Type: GrantFiled: March 7, 2016Date of Patent: April 19, 2022Assignees: COLTÈNE/WHALEDENT AG, regenHU AGInventors: Martin Schaufelberger, Simon Sutter Menghini, Werner Barth, Michael Kuster, Marc Thurner
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Patent number: 11033358Abstract: The invention relates to a blank for an endodontic instrument, obtainable by machining at least one rod by means of wire erosion, preferably selected from the group consisting of electrical discharge machining, wire electrical discharge machining, electrical discharge grinding and electro-chemical machining, wherein an erosion pattern is applied to the at least one rod, wherein the blank has a homogenous hardness.Type: GrantFiled: March 22, 2017Date of Patent: June 15, 2021Assignee: COLTÈNE/WHALEDENT AGInventor: Werner Mannschedel
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Patent number: 10729523Abstract: A dental restoration, a method for the production of a dental restoration and a kit. The dental restoration comprises an outer component, in particular a shell, and an inner component, in particular a core. The inner component and the outer component contain composite material. The outer component is mountable or mounted on the inner component. The inner component is designed for attachment onto a tooth preparation, in particular a tooth stump.Type: GrantFiled: July 12, 2017Date of Patent: August 4, 2020Assignee: COLTÈNE/WHALEDENT AGInventors: Ralf Böhner, Cornelia Kopfmann, Martin Schlüter, Martin Schaufelberger
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Patent number: 10716644Abstract: A dental instrument comprising a shaft and a working part adjoined thereto, with the working part having a coating in which abrasive bodies are embedded, is proposed, Firstly, the average proportion of the surface of the abrasive bodies which is covered by the coating can be at least 60%, preferably at least 65%, most preferably at least 70%. Secondly, the coating can, moreover, also consist of a nickel ahoy which additionally contains at least one element selected from the group consisting of titanium, vanadium, niobium, chromium, molybdenum, tungsten, manganese, iron and cobalt. In addition, a process for coating a working part, in particular for producing a dental instrument of this type, and also the use of such a dental instrument for cutting machining of solid bodies are proposed.Type: GrantFiled: June 29, 2017Date of Patent: July 21, 2020Assignee: COLTÈNE/WHALEDENT AGInventors: Ralf Kollefrath, Ulrich Müller, Martin Schlüter
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Publication number: 20180325636Abstract: A hollow-cylindrical device (1) having first and second openings (2, 3) for continuous production of a dental composite block. A curable composite material (4) and a temperature control unit (5) are provided. The composite material (4) is introduced into the device (1) through the first opening. The composite material (4) is cured by energy from the temperature control unit (5). An energy input occurs across a defined length of the substantially hollow-cylindrical device (1) and/or for a defined period of time. The composite material (4) is subsequently guided through the first opening (2) of the device (1). The composite material (4) is discharged from the second opening (3). In a first region along a portion of the length of the device, the device is either provided with an insulation or the flow-through device has a heat conductivity of 0.05 to 12 W/(m×K).Type: ApplicationFiled: September 22, 2016Publication date: November 15, 2018Applicant: COLTÈNE/WHALEDENT AGInventors: Cornelia KOPFMANN, Ralf BÖHNER
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Patent number: 10064699Abstract: A dental scaler apparatus includes a low power transformer that is timed to the operating frequency of a detachable scaler insert connected to the handle of the scaler apparatus by selectively connecting corresponding banks of parallel adjustment capacitors by engaging corresponding switches coupled to each of the adjustment capacitors.Type: GrantFiled: September 8, 2015Date of Patent: September 4, 2018Assignee: Coltene Whaledent, Inc.Inventors: Jeff Jaros, Randy Weakland
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Patent number: 9131996Abstract: A dental scaler apparatus includes a low power transformer that is tuned to the operating frequency of a detachable scaler insert connected to the handle of the scaler apparatus by selectively connecting corresponding banks of parallel adjustment capacitors by engaging corresponding switches coupled to each of the adjustment capacitors.Type: GrantFiled: November 13, 2012Date of Patent: September 15, 2015Assignee: Coltene Whaledent, Inc.Inventors: Jeff Jaros, Randy Weakland
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Publication number: 20130122459Abstract: A dental scaler apparatus includes a low power transformer that is tuned to the operating frequency of a detachable scaler insert connected to the handle of the scaler apparatus by selectively connecting corresponding banks of parallel adjustment capacitors by engaging corresponding switches coupled to each of the adjustment capacitors.Type: ApplicationFiled: November 13, 2012Publication date: May 16, 2013Applicant: COLTENE WHALEDENT, INC.Inventor: Coltene Whaledent, Inc.
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Publication number: 20130071814Abstract: The present invention pertains to the technical field of dental restorations, especially dental posts. One aspect of the present invention is a radio-opaque coated dental post. The post essentially consists of a core embedded in a thermoplastic or duroplastic material. The core is further coated with yet another resin with at least one radio-opaque additive. X-ray visibility especially at the outer margin of the post is significantly improved.Type: ApplicationFiled: May 31, 2011Publication date: March 21, 2013Applicant: COLTÈNE/WHALEDENT AGInventors: Ralf Boehner, Werner Mannschedel
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Patent number: 8227018Abstract: A method of manufacturing a dental post according to the present invention comprises the steps of: (i) overjacketing extrusion of at least one thermoplastic material over at least one filament or yarn, such that the thermoplastic material cross-sectionally enwraps the at least one filament or yarn; (ii) solidifying the extruded product of step (i); (iii) equipping the solidified extruded product of step (ii) with a surface texture, such that the thermoplastic wrapping is not modified in a way as to expose or damage the at least one filament or yarn. The invention allows for more flexibility in the manufacturing of dental posts, especially in generating surface textures of such dental posts.Type: GrantFiled: October 2, 2008Date of Patent: July 24, 2012Assignee: Coltene Whaledent AGInventors: Werner Mannschedel, Ralf Bohner, Barbara Muller
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Patent number: 8106109Abstract: The invention concerns a dental filling material with dual hardening mechanism, wherein i) a first hardening mechanism is based on a photocuring reaction, preferably a radical reaction, and ii) a second hardening mechanism is dependent on H2O as a reactant, especially as a ligand. Preferably, the second hardening mechanism is a gypsum-type reaction. Owing to the expansion of the composition an excellent marginal seal can be achieved, while the first hardening mechanism allows for a rapid cure on demand.Type: GrantFiled: May 12, 2008Date of Patent: January 31, 2012Assignee: Coltene Whaledent AGInventors: Ralf Böhner, Dierk Lübbers, Silvan Benz
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Patent number: 7998264Abstract: A hardenable dental material, exhibiting a reflectivity in the hardened state of preferably more than about 70%, measured according to EN ISO 2813 (1999) with an angle of incidence of 60°. The material provides for improved visual readability in the hardened state.Type: GrantFiled: May 2, 2006Date of Patent: August 16, 2011Assignee: Coltene Whaledent AGInventors: Dierk Lubbers, Ralf Kollefrath, Manfred Kalt
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Publication number: 20100084778Abstract: A method of manufacturing a dental post according to the present invention comprises the steps of: (i) overjacketing extrusion of at least one thermoplastic material over at least one filament or yarn, such that the thermoplastic material cross-sectionally enwraps the at least one filament or yarn; (ii) solidifying the extruded product of step (i); (iii) equipping the solidified extruded product of step (ii) with a surface texture, such that the thermoplastic wrapping is not modified in a way as to expose or dam-age the at least one filament or yarn. The invention allows for more flexibility in the manufacturing of dental posts, especially in generating surface textures of such dental posts.Type: ApplicationFiled: October 2, 2008Publication date: April 8, 2010Applicant: COLTENE WHALEDENT AGInventors: Werner Mannschedel, Ralf Bohner, Barbara Muller
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Patent number: D741991Type: GrantFiled: November 13, 2013Date of Patent: October 27, 2015Assignee: Coltene/Whaledent, Inc.Inventor: Michael Nordahl
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Patent number: D787663Type: GrantFiled: August 16, 2013Date of Patent: May 23, 2017Assignee: COLTENE/WHALEDENT GMBH & CO. KGInventor: Martin Schlueter
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Patent number: D799027Type: GrantFiled: January 28, 2016Date of Patent: October 3, 2017Assignee: Coltene/Whaledent GmbH & Co. KGInventors: Barbara Mueller, Martin Schlueter, Johannes Wolfert, Werner Mannschedel
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Patent number: D799693Type: GrantFiled: January 28, 2016Date of Patent: October 10, 2017Assignee: Coltene/Whaledent GmbH & Co. KGInventors: Barbara Mueller, Martin Schlueter, Johannes Wolfert, Werner Mannschedel