公开(公告)号：US20210113313A1

公开(公告)日：2021-04-22

申请号：US17088643

申请日：2020-11-04

Applicant: DENTSPLY SIRONA Inc.

Inventor： Md Abu HASAN ,  Dan AMMON

IPC: A61C13/00 ,  A61C9/00 ,  A61C13/08

Abstract: 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.

公开(公告)号：US20190284664A1

公开(公告)日：2019-09-19

申请号：US16429207

申请日：2019-06-03

Applicant: DENTSPLY SIRONA Inc.

Inventor： Dan AMMON ,  Vince K SHOTTON ,  Yong GAO ,  Randall MAXWELL

IPC: C22C18/02 ,  C22F1/10 ,  A61C5/42 ,  C22C19/03 ,  C22C30/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22F1/08 ,  C22C38/40 ,  C22C38/12 ,  C22F1/00 ,  C21D6/00 ,  C21D9/00 ,  C22C9/00 ,  C22C9/06

Abstract: 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. for a time period of about 3 minutes to about 30 minutes to shape-set the portion of the shaft while altering the austenite finish temperature thereby forming the shape-set nonlinear non-superelastic file; and wherein the altered austenite finish temperature of the shape-set nonlinear non-superelastic file is ranges from about 20° C. to about 40° C.

公开(公告)号：US20190053883A1

公开(公告)日：2019-02-21

申请号：US16167591

申请日：2018-10-23

Applicant: DENTSPLY SIRONA Inc.

Inventor： Benjamin J. SUN ,  Dan AMMON

IPC: A61C13/00 ,  C08L75/04 ,  C08G18/75 ,  C08G18/73 ,  C08G18/28 ,  C08G18/10 ,  A61K6/08 ,  B33Y80/00 ,  B33Y70/00

Abstract: 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.

公开(公告)号：US20190336254A1

公开(公告)日：2019-11-07

申请号：US16402440

申请日：2019-05-03

Applicant: DENTSPLY SIRONA Inc.

Inventor： Md Abu HASAN ,  Dan AMMON

IPC: A61C13/00 ,  A61C13/08 ,  A61C9/00

Abstract: 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.

公开(公告)号：US20180049843A1

公开(公告)日：2018-02-22

申请号：US15801357

申请日：2017-11-02

Applicant: Dentsply Sirona Inc.

Inventor： Vincent SHOTTON ,  Dan AMMON ,  Naim KARAZIVAN

IPC: A61C1/14 ,  A61C1/18 ,  A61C1/12 ,  A61C1/07 ,  A61C1/00 ,  A61C1/02

CPC classification number: A61C1/148 ,  A61C1/003 ,  A61C1/02 ,  A61C1/07 ,  A61C1/12 ,  A61C1/185 ,  A61C5/40 ,  A61C5/42

Abstract: 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.

公开(公告)号：US20180325624A1

公开(公告)日：2018-11-15

申请号：US15871523

申请日：2018-01-15

Applicant: DENTSPLY SIRONA Inc.

Inventor： Vincent SHOTTON ,  Dan AMMON

IPC: A61C5/42

CPC classification number: A61C5/42

Abstract: 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.

公开(公告)号：US20180055611A1

公开(公告)日：2018-03-01

申请号：US15641575

申请日：2017-07-05

Applicant: DENTSPLY SIRONA Inc.

Inventor： Benjamin Jiemin SUN ,  Dan AMMON

IPC: A61C13/00 ,  A61C13/01 ,  B29C39/12 ,  B29C35/08

CPC classification number: A61C13/0022 ,  A61C13/0004 ,  A61C13/01 ,  A61C13/04 ,  A61C13/081 ,  A61C13/087 ,  A61C13/09 ,  A61C13/20 ,  B29C39/025 ,  B29C39/123 ,  B29K2033/08 ,  B29K2033/12 ,  B29L2031/7536

Abstract: 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. Different layer of material has different mechanical and physical properties to meet different need, which provide added benefits to the patients, dental professional and dental laboratory.

公开(公告)号：US20170360534A1

公开(公告)日：2017-12-21

申请号：US15628194

申请日：2017-06-20

Applicant: DENTSPLY SIRONA Inc.

Inventor： Benjamin J. SUN ,  Dan AMMON

IPC: A61C13/00 ,  A61K6/08 ,  B33Y80/00 ,  B33Y70/00

CPC classification number: A61C13/0019 ,  A61C13/0004 ,  A61C13/0013 ,  A61C2202/01 ,  A61K6/08 ,  B33Y70/00 ,  B33Y80/00 ,  C08G18/10 ,  C08G18/2805 ,  C08G18/73 ,  C08G18/755 ,  C08L75/04

Abstract: 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. Different layer of material has different mechanical and physical properties to meet different need, which provide added benefits to the patients, dental professional and dental laboratory.