公开(公告)号：US20220207829A1

公开(公告)日：2022-06-30

申请号：US17604471

申请日：2020-04-24

申请人： DENTSPLY SIRONA Inc.

发明人： Christian STAHL ,  Daniel WEISS

IPC分类号： G06T17/20 ,  B29C64/393 ,  B33Y50/02 ,  A61C1/08

摘要： The present invention relates to a method of determining layer thicknesses (t) of a three-dimensional model (1) for generation with an additive manufacturing apparatus, the method comprising: a step of determining the layer thicknesses (t) according to an adaptive slicing algorithm in which the thickness of a layer (2) is calculated through a relation based on the inclination of the normal vectors (n) of the surface elements (s) of the 3D model (1) which at least partly enclose the layer (2) from a horizontal direction (x; y) the method being characterized by further comprising: a step of selectively imposing on at least one surface element (s) of the 3D model (1) a precision requirement out of one or more selectable different precision requirements which respectively differently alter in the determination step the relation with respect to the inclination of the normal vector (n) of the said at least one surface element (s) which allows, through the altered relation, the layer thickness (t) to obtain a value smaller or larger than the layer thickness (t) determined through the unaltered relation.

公开(公告)号：US20220183804A1

公开(公告)日：2022-06-16

申请号：US17549388

申请日：2021-12-13

申请人： DENTSPLY SIRONA INC.

发明人： Stefan FECHER ,  Lothar VÖLKL ,  Daniel AMMON

IPC分类号： A61C13/00 ,  C04B35/48

摘要： The present invention is related to a pink colored pre-sintered or fully-sintered blank for use for the production of a dental restoration, such as a denture base of a full or a partial denture, a partial denture, or an implant supported denture, consisting of a ceramic material which comprises zirconium dioxide doped with yttrium oxide (Y2O3), calcium oxide (CaO), magnesium oxide (MgO) and/or cerium oxide (CeO2), wherein the pink colored blank comprises 2 to 25 wt %, preferably 4 to 17 wt %, and more preferably 5 to 12 wt %, erbium oxide.

公开(公告)号：US20220170697A1

公开(公告)日：2022-06-02

申请号：US17674074

申请日：2022-02-17

申请人： DENTSPLY SIRONA Inc.

发明人： Peter FORNOFF ,  Christian SCHMIDT

IPC分类号： F27B17/02 ,  A61C13/20

摘要： A sintering furnace for couponents made of a sintered material, in particular for dental components, having a furnace chamber having a chamber volume (VK). A heating device, a receiving space having a gross volume (VB) located in the chamber volume (VK) and delimited by the heating device, and a useful region having a useful volume (VN) located in the gross volume (VB), are disposed in the furnace chamber. The furnace chamber has an outer wall consisting of walls having a wall portion to be opened for introduction of a component to be sintered having an object volume (VO) into the receiving space. In the furnace chamber the heating device has a thermal radiator having a radiation field which is disposed on at least one side of the receiving space. At least the useful volume (NV) disposed in the receiving space is disposed in the radiation field of the radiator.

公开(公告)号：US20220161500A1

公开(公告)日：2022-05-26

申请号：US17442681

申请日：2020-04-08

申请人： DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

发明人： Christian STAHL ,  Daniel WEISS

IPC分类号： B29C64/393 ,  B29C64/124 ,  B29C64/245 ,  B29C64/232 ,  B29C64/35 ,  B33Y40/20 ,  B33Y80/00 ,  B33Y50/02 ,  B33Y10/00

摘要： The present invention relates to a method of preparing a digital 3D model suitable to be generated and post-processed with an additive manufacturing system (1) comprising: an additive manufacturing apparatus (2) for generating the 3D object (3) corresponding to the prepared digital 3D model, attached to a platform (4) which can be gradually moved upwards, out of a fluid resin (5a) in a vat (6); and at least one post-processing apparatus (7) for performing at least one of washing, drying and curing the 3D object (3) received and maintained in the state attached to the platform (4) during the post-processing, the method comprising: a step of providing the digital 3D model; the method being characterized by further comprising: a step of determining fluid-collecting, basin-like, open regions (8) or fluid-sucking, dome-like, open regions (9) of the digital 3D model orientated in said state relative to the platform (4), and a step of including at least one drain channel (10) and/or at least one vent channel (11) into the fluid-collecting, basin-like, open region (8) and/or the fluid-sucking, dome-like, open region (9) in the digital 3D model respectively for preventing collection of fluid (5a, 5b) or suction of fluid (5a, 5b) during the generation process and the post-processing process.

公开(公告)号：US20220160323A1

公开(公告)日：2022-05-26

申请号：US17602306

申请日：2020-04-17

申请人： DENTSPLY SIRONA Inc.

发明人： Susanne MAUR ,  Stefan WUNDRAK

IPC分类号： A61B6/00 ,  A61B6/03 ,  A61B6/14 ,  G06T11/00

摘要： The resent invention relates to a method of x-ray projection geometry calibration in x-ray cone beam computed tomography, the method comprising: at least one step (S1) of obtaining two-dimensional x-ray images (1) or a sinogram (2) of at least a part of an object (3), generated through relatively rotating around the object (3) a detector and an x-ray source projecting x-rays towards the detector; characterized by further comprising: at least one step (S4) of detecting in the two dimensional x-ray images (1) or the sinogram (2) at least one feature (3a) of the object (3) by using a trained artificial intelligence algorithm; and at least one step (S5) of creating, based on the detection, calibration information which defines the geometry of the x-ray projection.

公开(公告)号：US11319392B2

公开(公告)日：2022-05-03

申请号：US16555217

申请日：2019-08-29

申请人： DENTSPLY SIRONA Inc.

发明人： Xiaoming Jin ,  Christian Scheufler ,  Joachim E. Klee ,  Hui Lu

IPC分类号： C08F220/60 ,  A61K6/887 ,  C08F293/00 ,  C08J3/075 ,  B82Y30/00

摘要： Described herein are a polymerizable antibacterial nanogel and hydrolytically stable antibacterial nanogel composition and methods of preparing such compositions, use of polymerizable antibacterial nanogels and hydrolytically stable antibacterial nanogels as additives to a dental product, such as a resin monomer, a cement, an adhesive and composite formulations. Methods and compositions for forming hydrolytically stable antibacterial monomers are also described.

公开(公告)号：US11306969B2

公开(公告)日：2022-04-19

申请号：US15116936

申请日：2015-02-12

申请人： DENTSPLY SIRONA Inc.

发明人： Peter Fornoff ,  Christian Schmidt

IPC分类号： F27B17/02 ,  A61C13/20

摘要： The invention relates to a sintering furnace (1) for components (15) made of a sintered material, in particular for dental components, comprising a furnace chamber (2) having a chamber volume (VK), wherein a heating device (5), a receiving space (9) having a gross volume (VB) located in the chamber volume (VK) and delimited by the heating device (5), and a useful region (10) having a useful volume (VN) located in the gross volume (VB), are disposed in the furnace chamber (2). The furnace chamber (2) has an outer wall (3) consisting of a plurality of walls having a wall portion (7) to be opened for introduction of a component to be sintered having an object volume (VO) into the receiving space (9). In the furnace chamber (2) the heating device (5) has a thermal radiator (6) having a radiation field (13) which is disposed on at least one side of the receiving space (9). At least the useful volume (NV) disposed in the receiving space (9) is disposed in the radiation field (13) of the radiator (6), wherein the maximum possible distance (d) of the component (15) to be sintered from the radiator (6) corresponds to at most twice the dimension (Dy) of the maximum useful volume (VN).

公开(公告)号：US20220079710A1

公开(公告)日：2022-03-17

申请号：US17299422

申请日：2019-12-05

申请人： DENTSPLY SIRONA INC.

发明人： Metin ERTUGRUL ,  Matthias REIN

IPC分类号： A61C1/14

摘要： The invention relates to a dental handpiece with a manually operable push button for actuating the trigger mechanism, wherein the push button is double-walled with an outer cover plate and an inner contact element, wherein for actuating the push button an upper side of the outer cover plate is pressable by a user against a bias, thereby actuating an actuator by an underside of the inner contact element to actuate the trigger mechanism, wherein a thermal insulation layer extends between the outer cover plate and the inner contact element which causes a thermal decoupling of the outer cover plate from the inner contact element.

公开(公告)号：US11250580B2

公开(公告)日：2022-02-15

申请号：US16580084

申请日：2019-09-24

申请人： DENTSPLY SIRONA INC.

发明人： Marcel Meyer ,  Sascha Schneider ,  Anders Adamson ,  Ruwen Schnabel

IPC分类号： G06K9/00 ,  G06T7/33 ,  G06N20/00 ,  G06N3/08 ,  G06T7/00 ,  G06T17/20

摘要： A method, system and computer readable storage media for segmenting individual intra-oral measurements and registering said individual intraoral measurements to eliminate or reduce registration errors. An operator may use a dental camera to scan teeth and a trained deep neural network may automatically detect portions of the input images that can cause registration errors and reduce or eliminate the effect of these sources of registration errors.

公开(公告)号：US20220036996A1

公开(公告)日：2022-02-03

申请号：US17281374

申请日：2019-10-11

申请人： DENTSPLY SIRONA INC.

发明人： Sascha SCHNEIDER ,  Evgenij DERZAPF

IPC分类号： G16H20/40 ,  A61C8/00

摘要： In a method of planning a restorative dental treatment for a patient, at least two dental restorations are digitally constructed (20). In the process, an optimum specification (40) for the insertion of the restorations into the mouth of the patient is calculated (30), wherein the optimum specification for the insertion of the restorations comprises an optimum sequence of the restorations to be inserted; if applicable, including optimum insertion paths for the restorations to be inserted.