Patents by Inventor DAN AMMON
DAN AMMON 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: 11654005Abstract: The invention relates to methods for preparing a three-dimensional digital model of a prosthetic denture base for fabrication using a light-based three-dimensional printing apparatus. A virtual reference model of a prosthetic denture base is prepared and manipulated to establish specific spatial orientation and angular inclination with respect to the build platform surface of the printing apparatus. Methods may include performing a corrective digital scaling process on the virtual reference model in order to achieve further improvements to dimensional accuracy in the fabrication of prosthetic denture bases.Type: GrantFiled: November 4, 2020Date of Patent: May 23, 2023Assignee: DENTSPLY SIRONA INC.Inventors: Md Abu Hasan, Dan Ammon
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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: 11013583Abstract: A three-dimensional printed dental device formed from rapid prototyping with printable polymerizable materials, the dental device comprising a polymeric composition, wherein the polymeric composition, after curing, has at least one property of flexural strength, flexural modulus, fracture toughness, and work of fracture that is at least 20% greater in measured value at 37° C. in comparison to measured value at 23° C.Type: GrantFiled: October 23, 2018Date of Patent: May 25, 2021Assignee: DENTSPLY SIRONA Inc.Inventors: Benjamin J Sun, Dan Ammon
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Publication number: 20210113313Abstract: The invention relates to methods for preparing a three-dimensional digital model of a prosthetic denture base for fabrication using a light-based three-dimensional printing apparatus. A virtual reference model of a prosthetic denture base is prepared and manipulated to establish specific spatial orientation and angular inclination with respect to the build platform surface of the printing apparatus. Methods may include performing a corrective digital scaling process on the virtual reference model in order to achieve further improvements to dimensional accuracy in the fabrication of prosthetic denture bases.Type: ApplicationFiled: November 4, 2020Publication date: April 22, 2021Applicant: DENTSPLY SIRONA Inc.Inventors: Md Abu HASAN, Dan AMMON
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Patent number: 10966801Abstract: A rotatable endodontic file for cleaning/shaping a tooth root canal that includes an elongated shaft having a proximal end portion, a distal end and a tapered working portion having a rotational axis, the working portion extending from the proximal portion to the distal end; the external surface of the shaft working portion having a plurality of parallelogram-shaped cross sections along the working portion.Type: GrantFiled: January 15, 2018Date of Patent: April 6, 2021Assignee: DENTSPLY SIRONA INC.Inventors: Vincent Shotton, Dan Ammon
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Patent number: 10856957Abstract: The invention relates to methods for preparing a three-dimensional digital model of a prosthetic denture base for fabrication using a light-based three-dimensional printing apparatus. A virtual reference model of a prosthetic denture base is prepared and manipulated to establish specific spatial orientation and angular inclination with respect to the build platform surface of the printing apparatus. Methods may include performing a corrective digital scaling process on the virtual reference model in order to achieve further improvements to dimensional accuracy in the fabrication of prosthetic denture bases.Type: GrantFiled: May 3, 2019Date of Patent: December 8, 2020Assignee: DENTSPLY SIRONA Inc.Inventors: Md Abu Hasan, Dan Ammon
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Publication number: 20200332440Abstract: A method for forming a medical instrument from a mono-crystalline shape memory alloy.Type: ApplicationFiled: July 7, 2020Publication date: October 22, 2020Applicant: DENTSPLY SIRONA Inc.Inventors: YONG GAO, Dan Ammon, Geoffrey Kamau NDUNGU
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Publication number: 20200170892Abstract: A dental composition that includes one or more monomers, a plurality of crosslinking agents, and an initiator.Type: ApplicationFiled: February 5, 2020Publication date: June 4, 2020Applicant: DENTSPLY SIRONA Inc.Inventors: Benjamin Jiemin Sun, Dan Ammon, Brian Fritsch
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Publication number: 20190336254Abstract: The invention relates to methods for preparing a three-dimensional digital model of a prosthetic denture base for fabrication using a light-based three-dimensional printing apparatus. A virtual reference model of a prosthetic denture base is prepared and manipulated to establish specific spatial orientation and angular inclination with respect to the build platform surface of the printing apparatus. Methods may include performing a corrective digital scaling process on the virtual reference model in order to achieve further improvements to dimensional accuracy in the fabrication of prosthetic denture bases.Type: ApplicationFiled: May 3, 2019Publication date: November 7, 2019Applicant: DENTSPLY SIRONA Inc.Inventors: Md Abu HASAN, Dan AMMON
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Patent number: 10433939Abstract: This invention designs and builds multiple layers (two layers or more) of millable dental blocks or disks for milling of various dental devices, specifically denture base blocks or disks of denture base material, where milled teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. This invention also designs and builds multiple layers (two layers or more) of millable denture base or denture blocks or disks comprised of denture base or/and denture tooth materials to form final dental devices, such as partial and full dentures. A method for manufacturing a layered denture is provided. The invention provides a multiple layered denture base block (or disk) for milling a denture base. The invention also provides a multiple layered denture block (or disk) for milling a denture. Highly shape adjustable or shape memory polymer layer(s) may be used in these multiple layered forms.Type: GrantFiled: July 5, 2017Date of Patent: October 8, 2019Assignee: DENTSPLY SIRONA Inc.Inventors: Benjamin Jiemin Sun, Dan Ammon
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Publication number: 20190284664Abstract: A method for manufacturing a shape-set nonlinear non-superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis; providing a fixture including a file path being defined by one or more displacement members, the file path configured for receiving the shaft; inserting at least a portion of the shaft into the fixture along the file path, the portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft; heating the portion of the shaft while inserted in the fixture to a temperature of at least about 350° C. to about 600° C.Type: ApplicationFiled: June 3, 2019Publication date: September 19, 2019Applicant: DENTSPLY SIRONA Inc.Inventors: Dan AMMON, Vince K SHOTTON, Yong GAO, Randall MAXWELL
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Patent number: 10351934Abstract: A method for manufacturing a nonlinear superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis; providing a fixture including a file groove being defined by one or more displacement members, the file groove configured for receiving the shaft; inserting at least a portion of the shaft into the fixture along the file groove, the portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft; heating the portion of the shaft while inserted in the fixture to a temperature of at least about 300° C. for a time period of at least about 1 minute to shape-set the portion of the shaft thereby forming a shape-set nonlinear file.Type: GrantFiled: November 14, 2014Date of Patent: July 16, 2019Assignee: DENTSPLY SIRONA Inc.Inventors: Dan Ammon, Vincent Shotton, Yong Gao, Randall Maxwell
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Patent number: 10350028Abstract: A multi-directional handpiece that includes a motor drive extending along and configured for rotation about a body axis, the motor drive having: a motor gearing at a proximal end of the motor drive; and a file gearing in engagement with the motor gearing for transferring the rotational and axial movement to a workpiece; and a housing for the workpiece; and wherein through rotation of the motor drive, the workpiece moves in an axial oscillating motion while being rotated.Type: GrantFiled: November 2, 2017Date of Patent: July 16, 2019Assignee: DENTSPLY SIRONA Inc.Inventors: Vincent Shotton, Dan Ammon, Naim Karazivan
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Patent number: 10299896Abstract: This invention designs and builds multiple layers (two layers or more) of various dental devices, specifically denture base or denture, where printed multiple layered denture base with teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. It can also print denture teeth. This invention also designs and prints multiple layers (two layers or more) of denture base with artificial denture teeth to form final dental devices, such as partial and full dentures. A method for manufacturing a layered denture is provided. The invention provides a multiple layered denture base materials for printing a denture base. The invention also provides a multiple layered denture tooth materials for printing artificial denture teeth. Highly shape adjustable or shape memory polymer layer(s) may be used in these multiple layered denture base forms.Type: GrantFiled: June 20, 2017Date of Patent: May 28, 2019Assignee: DENTSPLY SIRONA Inc.Inventors: Benjamin J Sun, Dan Ammon
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Publication number: 20190053883Abstract: A three-dimensional printed dental device formed from rapid prototyping with printable polymerizable materials, the dental device comprising a polymeric composition, wherein the polymeric composition, after curing, has at least one property of flexural strength, flexural modulus, fracture toughness, and work of fracture that is at least 20% greater in measured value at 37° C. in comparison to measured value at 23° C.Type: ApplicationFiled: October 23, 2018Publication date: February 21, 2019Applicant: DENTSPLY SIRONA Inc.Inventors: Benjamin J. SUN, Dan AMMON
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Patent number: 10182883Abstract: An endodontic instrument for cleaning/shaping a tooth root canal that includes an elongated shaft composed of a porous material, the shaft having a proximal end portion, a distal end and a tapered working portion having an external surface and a rotational axis, the working portion extending from the proximal end portion to the distal end.Type: GrantFiled: November 21, 2014Date of Patent: January 22, 2019Assignee: DENTSPLY SIRONA INC.Inventors: Vincent Shotton, Christopher Damien, Dan Ammon
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Publication number: 20180325624Abstract: A rotatable endodontic file for cleaning/shaping a tooth root canal, comprising: an elongated shaft having a proximal end portion, a distal end and a tapered working portion having a rotational axis, the working portion extending from said proximal portion to said distal end; the external surface of said shaft working portion having a plurality of at least two spirals, a plurality of parallelogram-shaped cross sections along the working portion, at least one of the plurality of parallelogram-shaped cross sections two C-shaped or concave geometries along two symmetrical sides or four C-shaped or concave geometries along all four sides, each parallelogram-shaped cross section having an acute angle and a center of mass that is located on the axis of rotation, each parallelogram-shaped cross section, wherein an acute angle of a first parallelogram-shaped cross section is different or the same as an acute angle of a second parallelogram-shaped cross section.Type: ApplicationFiled: January 15, 2018Publication date: November 15, 2018Applicant: DENTSPLY SIRONA Inc.Inventors: Vincent SHOTTON, Dan AMMON
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Patent number: 10117809Abstract: An adhesion promoter for endodontic sealant compositions for filling and sealing a root canal.Type: GrantFiled: April 27, 2016Date of Patent: November 6, 2018Assignee: DENTSPLY SIRONA Inc.Inventors: Todd Berger, Kevin Wilkinson, Adam Baratz, Dan Ammon
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Patent number: 10004666Abstract: The present invention is directed to a dental composition, and specifically to an improved composition for endodontic instruments useful for filling root canals or sealing.Type: GrantFiled: May 2, 2014Date of Patent: June 26, 2018Assignee: DENTSPLY SIRONA Inc.Inventors: Todd Berger, Kevin Wilkinson, Adam Barantz, Dan Ammon, Xiaoming Jin, Bernard Koltisko
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Publication number: 20180142377Abstract: A medical instrument comprising a mono-crystalline shape memory alloy and a method for forming thereof.Type: ApplicationFiled: November 21, 2016Publication date: May 24, 2018Applicant: DENTSPLY International Inc.Inventors: Yong Gao, Dan Ammon, Geoffrey Kamau NDUNGU