公开(公告)号：US20210389549A1

公开(公告)日：2021-12-16

申请号：US17279148

申请日：2019-09-27

Applicant: DENTSPLY SIRONA inc.

Inventor： Markus BERNER ,  Martin SEIB ,  Fabrizio CONFALONIERI

IPC: G02B7/04 ,  G02B27/64 ,  A61B5/00

Abstract: The present invention relates to an apparatus (28) for varying a focal point (24) of an optical system in a dental 3D-scanner (10), comprising: a lens unit (30) with a lens (20) being movable between a front reversal position and a rear reversal position to vary a position of a focal point with respect to a scan object (22): a guide unit (34) for guiding a movement of the lens unit between the front reversal position and the rear reversal position along a guide axis (48) being parallel to an optical axis (46) of the lens; and a drive unit (36) for driving the movement of the lens unit, said drive unit including a linear motor (38) with an anchor (40) and a stator (42), said anchor being movable along a drive axis (44) of the drive unit that is parallel to the guide axis, said stator being affixed to the guide unit. The present invention further relates to a dental 3D-scanner (10) for scanning a three-dimensional scan object.

公开(公告)号：US11166883B2

公开(公告)日：2021-11-09

申请号：US16092658

申请日：2017-04-07

Applicant: DENTSPLY SIRONA inc.

Inventor： Joachim E Klee ,  Maximilian Maier ,  Christoph P. Fik ,  Jacques Lalevee ,  Jean Pierre Fouassier ,  Fabrice Morlet-Savary ,  Celine Dietlin ,  Mariem Bouzrati-Zerelli

IPC: A61K6/88 ,  A61K6/887 ,  A61K6/54 ,  A61K6/62 ,  A61K6/889

Abstract: Dental composition comprising (a) a homogeneous phase comprising monomer combinations (i) and (ii), (i) and (iii), (ii) and (iii), or (i), (ii) and (iii), or comprising monomer (iii), wherein (i) represents one or more compounds having one or more radically polymerizable carbon-carbon double bonds; (ii) represents one or more compounds having one or more cationically polymerizable groups; and (iii) represents one or more compounds having a combination of one or more radically polymerizable carbon-carbon double bonds and one or more cationically polymerizable groups; (b) an initiator system comprising (iv) one or more radical polymerization initiator of the following formula (I): wherein M is Ge or Si; R1, R2 and R3 may be the same or different, independently represent an organic group, and R4 represents a hydrogen atom, an organic or organometallic group; provided that when R4 is a hydrogen atom, the initiator system further comprises a sensitizer compound having a light absorption maximum in the range from 300 to 600 nm; (v) a cationic polymerization initiator, which is a compound selected from the following formula (II), (III) and (IV): wherein R5 and R6, which may be the same or different, independently represent an aryl group which may have a substituent; and Y− represents an anion; wherein R7, R8 and R9 which may be the same or different, independently represent an aryl group which may have a substituent; and Y− represents an anion; R10, R11, R12, and R13 which may be the same or different, independently represent an alkyl or aryl group which may have a substituent; and Y− represents an anion.

公开(公告)号：US11123163B2

公开(公告)日：2021-09-21

申请号：US16374962

申请日：2019-04-04

Applicant: DENTSPLY SIRONA Inc.

Inventor： Jeremy E. Jo ,  Jennifer DiPietro

IPC: A61F2/28 ,  A61C13/00 ,  A61F2/46 ,  A61C9/00

Abstract: A method and system for making a preformed dental membrane using three-dimensional (3D) patient data. A patient jaw having insufficient bone at a surgical site may be scanned to provide a 3D image which may be used to design a virtual preformed dental membrane and fabricate for placement over packed bone graft substitute.

公开(公告)号：US11122180B2

公开(公告)日：2021-09-14

申请号：US14268201

申请日：2014-05-02

Applicant: DENTSPLY SIRONA Inc.

Inventor： Joachim Pfeiffer ,  Jian Lu ,  Alexei Harvard ,  Bjoern Voss ,  Frank Thiel

IPC: H04N1/00 ,  H04N1/46 ,  H04N1/195 ,  A61C9/00 ,  G01B11/25 ,  H04N13/254 ,  H04N13/207

Abstract: A method of performing a three-dimensional (3D) scan of an object includes applying an optical contrast powder to the object and illuminating the object with light. First and second two-dimensional (2D) color image data corresponding to the object is generated. First and second 2D monochrome image data corresponding to the object is generated using the first and second 2D color image data. 3D data corresponding to the object is generated using the first and second monochrome 2D image data. Color 3D image data corresponding to the object is generated by adding color information to the 3D data. The color 3D image data is displayed.

公开(公告)号：US11116466B2

公开(公告)日：2021-09-14

申请号：US16703365

申请日：2019-12-04

Applicant: DENTSPLY SIRONA INC.

Inventor： Stan Mandelkern ,  Joseph Lasker ,  Fred Duewer

IPC: A61B6/02 ,  A61B6/14 ,  G06T11/00 ,  G06T7/12 ,  A61B6/00 ,  G06T5/00 ,  G06T7/00 ,  G06T7/181 ,  G06T7/136 ,  G06T7/143 ,  G06T7/149 ,  G06T7/246 ,  G06T7/254 ,  G06T7/60

Abstract: 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：US11116444B2

公开(公告)日：2021-09-14

申请号：US16466316

申请日：2017-12-06

Applicant: DENTSPLY SIRONA inc.

Inventor： Volker Rasche ,  Stefan Wundrak

IPC: A61B5/00 ,  A61B90/00 ,  A61B5/055 ,  A61B5/11 ,  A61B6/00 ,  A61C19/045 ,  G01R33/56 ,  G01R33/563 ,  G01R33/58

Abstract: Described is a method for detecting and displaying the movement of a temporomandibular joint which connects a lower jaw and an upper jaw by magnetic resonance imaging. A marker is secured to the lower jaw, a marker movement curve is generated using magnetic resonance imaging measurement data sets during a first measurement interval, during which the lower jaw is moved relative to the upper jaw, and a point which corresponds to a first position of the lower jaw relative to the upper jaw is ascertained on the movement curve. An image data set is generated during a second measurement interval, during which the temporomandibular joint is not moved, and a first model, which represents at least one part of the upper jaw and/or a temporal bone part that comprises the temporomandibular joint socket, and a second model, which represents at least one part of the lower jaw, are ascertained therefrom. A movement curve of the second model relative to the first model is calculated and displayed using the marker movement curve.

公开(公告)号：US11110039B2

公开(公告)日：2021-09-07

申请号：US16414986

申请日：2019-05-17

Applicant: DENTSPLY SIRONA Inc.

Inventor： Xiaoming Jin ,  Christos Angeletakis ,  Yi Liu ,  Joachim E. Klee ,  Christoph Weber ,  Xin Huo

IPC: A61K6/90 ,  C08F283/12 ,  C08G77/20 ,  C08G77/26

Abstract: A light-curable dental impression material comprising
(a) a polymerizable polysiloxane resin composition comprising compounds of formula (I) E-(L1-Z)n-L2-E   (I) (b) a particulate filler; and (c) a photoinitiator.

公开(公告)号：US20210267461A1

公开(公告)日：2021-09-02

申请号：US17258812

申请日：2019-06-14

Applicant: DENTSPLY SIRONA INC.

Inventor： Konrad KLEIN ,  Peter FRITZ ,  Anders ADAMSON

IPC: A61B5/00 ,  G06T7/55

Abstract: The invention relates to an optical measuring method for the three-dimensional detection of the surface of an object using an optical recording unit. The optical recording unit is moved relative to the object during a first measurement time interval, height maps are successively detected by the recording unit at a recording frequency, and at least some of the detected height maps are each added to an overall height map and displayed. The recording frequency is regulated by control signals during the measurement time interval. The control signals are generated spaced apart in time and for the purposes of producing each control signal, a statistic for the quality of the height map is determined for the respectively last detected height image and used for producing the control signal. The statistic is the overall intensity and/or the maximum intensity and/or the contrast and/or the number of extracted data points and/or a quality of extracted data points and/or the signal-to-noise ratio and/or the contrast of an additionally generated color image.

公开(公告)号：US20210256696A1

公开(公告)日：2021-08-19

申请号：US17251364

申请日：2019-06-17

Applicant: SIRONA DENTAL SYSTEMS GMBH ,  DENTSPLY SIRONA INC.

Inventor： Sascha SCHNEIDER ,  Frank THIEL ,  Axel SCHWOTZER

IPC: G06T7/00 ,  G06T15/08 ,  G06T15/04 ,  A61B5/00 ,  A61C9/00

Abstract: A method for designing a drilling template, wherein a dental situation is measured by means of a 3D surface measuring device and a 3D surface model of the dental situation is produced and/or measured by means of an X-ray device or an MRI device, wherein the dental situation is measured and a volume model of the dental situation is produced, the method comprising the steps of: applying an artificial neural network for machine learning (convolutional neural network; CNN) to the 3D surface model of the dental situation and/or the volume model of the dental situation and/or to an initial 3D model of the drilling template: and automatically producing a ready made 3D model of the drilling template.

公开(公告)号：US11073334B2

公开(公告)日：2021-07-27

申请号：US16077516

申请日：2017-02-22

Applicant: DENTSPLY SIRONA Inc.

Inventor： Rainer Jumpertz

IPC: A61C13/20 ,  F27B17/02 ,  F27D15/02

Abstract: The invention relates to a furnace having a vertical orientation for dental components, comprising a combustion chamber, which is open at the bottom and the opening of which can be closed by means of a furnace door, which is lowered in the vertical direction in the open position, and comprising a depositing region for the heated component, which depositing region is arranged at a distance from the opening in the combustion chamber. The depositing region is part of the furnace, and a cooling device that acts on the depositing region is arranged on or in the furnace. A heat-resistant base has a heat-resistant support arranged in a housing, which support has an active or passive cooling device, which, for example, has a Peltier element.