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公开(公告)号：US20220331074A1
公开(公告)日：2022-10-20
申请号：US17641128
申请日：2020-09-21
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Franz BASLER , Daniel WEISS
IPC: A61C13/00
Abstract: A method of machining at least one dental restoration (1) from a workpiece (2) using one or more dental took (3), including a step of defining, a target contour (4) of the dental restoration (1); also including a step of predicting the deflection of the dental tool (3) during pre-machining through a model based on one or more machining parameters; a step of determining based on the prediction step one or more primary locations (5) at which the target contour (4) would have been damaged during pre-machining; a step of modifying the target contour (4) or the corresponding machining path by adding an oversize of material (6) substantially only at the primary locations (5) for preventing damage; and a step of pre-machining the workpiece (2) based on the modified target contour (17) or the corresponding modified machining path.
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公开(公告)号：US20220278635A1
公开(公告)日：2022-09-01
申请号：US17626252
申请日：2020-07-08
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Daniel TRAUTMANN
Abstract: The present invention relates to a method of operating a stepper motor for use in a dental tool machine (1) for removing material from a dental blank (2), the method comprising: a step of adapting torque reserves of the stepper motor at operating points to net load moments (M_net) respectively, characterized by further comprising: a first step (S1) of predicting, through simulation, the net load moments (M_net) beforehand; a second step (S2) of predicting, through simulation, the supply current (I_tr) to be supplied to the stepper motor for setting up the torque reserves that correspond to the predicted net load moments (M_net) respectively; and a step (S3) of driving the stepper motor based on the predicted supply current (I_tr).
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公开(公告)号：US20210393381A1
公开(公告)日：2021-12-23
申请号：US17291844
申请日：2019-11-18
Applicant: DENTSPLY SIRONA INC.
Inventor： Hans-Christian SCHNEIDER , Helmut SEIBERT , Thomas HASENZAHL , Mathias MORGENROTH
IPC: A61C13/00
Abstract: The invention relates to a method for producing ceramic dental prosthesis parts by way of a CAD/CAM machining station, comprising the following steps:—providing a disk-shaped ceramic blank, wherein the blank has the final strength;—attaching the blank in a mounting device of the CAD/CAM machining station;—controlling the CAD/CAM machining station for establishing an initial contact between the blank and the grinding tool in such a way that, due to the rotation of the grinding tool about the longitudinal axis (13) thereof, the entire contact surface (21) between the grinding tool and the blank has relative movement; and—machining the blank by way of the rotating grinding tool, proceeding from the initial contact, to produce the ceramic dental prosthesis parts.
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Patent Agency Ranking
公开(公告)号：US20200179082A1
公开(公告)日：2020-06-11
申请号：US16708531
申请日：2019-12-10
Applicant: DENTSPLY SIRONA INC.
Inventor： Hans-Christian SCHNEIDER , Oliver NOWARRA , Daniel WEIß , Peter FORNOFF
Abstract: The present invention relates to a method for the design and manufacture of a dental component with a surface, wherein a 3D model of the dental component is designed by means of a CAD unit and the dental component is manufactured by a CAM unit on the basis of the 3D model. In order to provide a method which significantly shortens the time required for the design and manufacture of a dental component, so that the length of the dental session at which the patient must be present is shortened, it is inventively proposed that the 3D model is manufactured in at least one first design step, in which a first 3D submodel is designed with at least one first surface section, and a second design step in which a second 3D submodel is designed with at least one second surface section, wherein the first design step is completed before the second design step and the CAM unit begins the manufacture of the first surface section of the dental component based on the first 3D submodel before the design of the second 3D submodel is completed.
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公开(公告)号：US20240303809A1
公开(公告)日：2024-09-12
申请号：US18570698
申请日：2022-05-17
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , David SCHADER , Helmut SEIBERT
CPC classification number: G06T7/0012 , G06T19/20 , G06T2207/30036
Abstract: The present teachings relate to a method for transforming a digital 3D dental model to a 2D dental image, the method including: providing, at least two selected images from the 3D dental model; converting, each of the selected images, to a respective color component of a color model; obtaining, by combining the respective color components, the 2D image in a computer-readable format of the color model. The present teachings also relate to a method of classification of the 2D image, a dental procedure assisting system, uses and computer software products.
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6.发明公开公开(公告)号：US20230150185A1
公开(公告)日：2023-05-18
申请号：US17915138
申请日：2021-03-11
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Peter FALTIN
IPC: B29C51/44
Abstract: A hand tool (1) for separating a deep-drawn jaw-spanning dental apparatus such as an aligner or a bite splint of thermoform film. The hand tool includes a grip (2) for holding; a separating element (3) for thermally separating the deep-drawn thermoform film and refining the separated deep-drawn thermoform; a heating device adapted to regulate heating of the separating element (3) so as to increase the temperature of the thermoform film substantially to at least its glass temperature; and a power supply device for supplying electric power to the heating device.
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公开(公告)号：US20230144773A1
公开(公告)日：2023-05-11
申请号：US17915346
申请日：2021-03-11
Applicant: DENTSPLY SIRONA Inc.
Inventor： Hans-Christian SCHNEIDER , Peter FALTIN
CPC classification number: B29C51/445 , A61C7/08 , B29C51/08 , B29C51/46 , B29L2031/753
Abstract: A device for separating a deep-drawn jaw-spanning dental apparatus such as an aligner or a bite splint of thermoform film that includes: a separating element for thermally separating the deep-drawn thermoform film and simultaneously refining, the separated deep-drawn thermoform film; a heating means for regulating the heating of the separating element so as to increase the temperature of the thermoform film substantially to at least its glass temperature; a support for supporting the deep-drawn thermoform film relatively movable with respect to the separating element; a moving mechanism for moving the separating element along a separation contour of the deep-drawn jaw-spanning dental apparatus relative to the support; and a control unit adapted to control the heating means and the moving mechanism based on the separation contour.
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公开(公告)号：US20220054239A1
公开(公告)日：2022-02-24
申请号：US17291635
申请日：2019-11-14
Applicant: DENTSPLY SIRONA INC.
Inventor： Hans-Christian SCHNEIDER , Helmut SEIBERT , Thomas HASENZAHL , Mathias MORGENROTH
IPC: A61C13/00 , A61C13/083
Abstract: The invention relates to a disk-shaped blank made of a final-strength dental ceramic, comprising a casing surrounding a perimeter of the final-strength dental ceramic, the casing made of a material that is softer than the final-strength ceramic, and in particular made of wood or plastic material.
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