公开(公告)号：US11013583B2

公开(公告)日：2021-05-25

申请号：US16167591

申请日：2018-10-23

Applicant: DENTSPLY SIRONA Inc.

Inventor： Benjamin J Sun ,  Dan Ammon

IPC: C08G18/73 ,  C08G18/10 ,  A61C13/00 ,  C08G18/75 ,  C08G18/28 ,  C08L75/04 ,  A61K6/884 ,  B33Y70/00 ,  B33Y80/00

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：US20210145540A1

公开(公告)日：2021-05-20

申请号：US17161111

申请日：2021-01-28

Applicant: DENTSPLY SIRONA Inc.

Inventor： Gilbert ROTA ,  Paul-Henri VALLOTTON

IPC: A61C5/40 ,  A61C5/42

Abstract: An endodontic instrument that includes a tapered rod, the rod including an active portion and a distal end, the active portion defining an envelope having a longitudinal axis that coincides with an axis of rotation of the instrument.

公开(公告)号：US20210069070A1

公开(公告)日：2021-03-11

申请号：US16642259

申请日：2018-08-30

Applicant: DENTSPLY SIRONA INC.

Inventor： Maximilian MAIER ,  Joachim E. KLEE ,  Christian SCHEUFLER ,  Caroline RENN ,  Florian SZILLAT

IPC: A61K6/889 ,  C08F220/64 ,  A61K6/62 ,  C08F8/32

Abstract: The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition.
The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.

公开(公告)号：US20210052356A1

公开(公告)日：2021-02-25

申请号：US16543767

申请日：2019-08-19

Applicant: DENTSPLY SIRONA Inc.

Inventor： Björn Elgh ,  Daniel Magnusson ,  Jeremy Jo

IPC: A61C8/00 ,  A61C1/08

Abstract: The present invention relates to a dental device (1) for removing a dental implant (2) which is at least partially or fully osseointegrated with a patient's jaw (3), comprising: a head portion (6) for rotatingly holding a dental tool (7) for unscrewing the dental implant (2); and a driving means for applying a torque to the dental tool (7) for unscrewing the dental implant (2); characterized in that the driving means is further adapted to apply pulsed torques (τ; τ1, τ2, τ3) to the dental tool (7) to unscrew the dental implant (2).

公开(公告)号：US10899861B2

公开(公告)日：2021-01-26

申请号：US15754303

申请日：2016-09-09

Applicant: DENTSPLY SIRONA inc.

Inventor： Joachim Klee ,  Caroline Renn ,  Florian Szillat ,  Oliver Elsner ,  Christian Scheufler ,  Ulrich Lampe ,  Helmut Ritter

IPC: A61F2/00 ,  C08F220/56 ,  C08F8/30 ,  C08F290/12 ,  C08F220/06 ,  C07C233/20

Abstract: The present invention relates to a polymerizable polyacidic polymer and to a process for preparing the polymerizable polyacidic polymer. Furthermore, the present invention relates to an aqueous dental composition comprising the polymerizable polyacidic polymer, to a use of the polymerizable polyacidic polymer for the preparation of a dental composition and to an acrylic acid derivative copolymer.

公开(公告)号：US20200367998A1

公开(公告)日：2020-11-26

申请号：US16767630

申请日：2018-11-28

Applicant: DENTSPLY SIRONA INC.

Inventor： Sascha Schneider ,  Peter Fornoff

IPC: A61C8/00 ,  A61C13/00 ,  A61C13/083

Abstract: invention further relates to a method for producing a dental prosthesis. In this method the dental prosthesis block is provided and the dental prosthesis is produced by removing material from the dental prosthesis forming block by means of a CAD/CAM method, such that the pin forms part of the finished dental prosthesis.

公开(公告)号：US10780026B2

公开(公告)日：2020-09-22

申请号：US15898933

申请日：2018-02-19

Applicant: DENTSPLY SIRONA INC.

Inventor： Hui Lu ,  Xiaoming Jin ,  Joachim E. Klee ,  Bernard Koltisko

IPC: A61K6/88 ,  C08F2/46 ,  A61K6/887 ,  C07D295/24 ,  A61K6/17

Abstract: A method of forming a dental composite includes photopolymerizing a dental composition. The dental composition includes a free-radically polymerizable (meth)acrylate resin, 75 percent by weight or greater of filler particles, and about 0.005 percent to about 5 percent by weight of at least one polymerizable stable radical. The photopolymerizing forms the dental composite such that the dental composite has a flexural modulus of about 9500 MPa or greater and the polymerizable stable radical reduces shrinkage stress of the dental composite caused by the photopolymerizing by 10% or greater. A method of forming a dental composite composition includes combining a free-radically polymerizable (meth)acrylate resin, 75 percent by weight or greater of filler particles, and about 0.005 percent to about 5 percent by weight of at least one polymerizable stable radical to form the dental composite composition.

公开(公告)号：US10753734B2

公开(公告)日：2020-08-25

申请号：US16003628

申请日：2018-06-08

Applicant: DENTSPLY SIRONA Inc.

Inventor： Michael Tewes ,  Markus Berner

IPC: G01B11/25

Abstract: A device, method and system for utilizing an optical array generator, confocal measurement/depth of focus techniques to generate dynamic patterns in a camera for projection onto the surface of an object for three-dimensional (3D) measurement. Projected light patterns are used to generate optical features on the surface of an object to be measured and optical 3D measuring methods which operate according to triangulation, confocal and depth of focus principles are used to measure the object.

公开(公告)号：US20200157313A1

公开(公告)日：2020-05-21

申请号：US16555453

申请日：2019-08-29

Applicant: DENTSPLY SIRONA Inc.

Inventor： Xiaoming JIN

IPC: C08K5/3445 ,  C08K5/37 ,  C08F20/18

Abstract: Described herein is a new initiator system for initiating radical polymerization of ethylenically unsaturated monomers. The initiator system comprises an organic compound having N-charged moiety in combination with an organic thiol compounds. The initiator system demonstrates better stability and is suitable for use in the field of a dentistry in formulated dual cure compositions, such as a resin modified glass ionomers, a cement, an orthodontic adhesive, and composite formulations.

公开(公告)号：US20200094456A1

公开(公告)日：2020-03-26

申请号：US16137958

申请日：2018-09-21

Applicant: DENTSPLY SIRONA Inc.

Inventor： Geoffrey Kamau NDUNGU ,  Christopher Michael GLADSON

IPC: B29C45/16 ,  B29C45/14

Abstract: An apparatus and method for concentrically overmolding Gutta-Percha onto a carrier. A shape, structure and dimensions of gutta-percha may be configured into cavities of a mold having more retractable pins for concentrically overmolding the gutta-percha onto one or more carriers. The apparatus may preferably be automated/self-driven to concentrically overmold gutta-percha onto the carriers in multiple stages and cycles.