公开(公告)号：US11771530B2

公开(公告)日：2023-10-03

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

CPC classification number: A61C8/0051 ,  A61C8/0013 ,  A61C8/0022 ,  A61C13/0004 ,  A61C13/0022 ,  A61C13/0835

Abstract: The present invention relates to a dental prosthesis forming block (10) for producing a dental prosthesis (50). The forming block having a pin (20) with a self-tapping outer thread, which is arranged on a first surface (11) of the dental prosthesis forming block (10). The invention further relates to a method for producing a dental prosthesis (50). In this method the dental prosthesis block (10) is provided and the dental prosthesis (50) is produced by removing material from the dental prosthesis forming block (10) by a CAD/CAM method, such that the pin (20) forms part of the finished dental prosthesis (50).

公开(公告)号：US11306969B2

公开(公告)日：2022-04-19

申请号：US15116936

申请日：2015-02-12

Applicant: DENTSPLY SIRONA Inc.

Inventor： Peter Fornoff ,  Christian Schmidt

IPC: F27B17/02 ,  A61C13/20

Abstract: 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：US12239499B2

公开(公告)日：2025-03-04

申请号：US17640966

申请日：2020-09-21

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Daniel Weiss ,  Oliver Nowarra ,  Peter Fornoff

IPC: A61C13/00 ,  A61C9/00

Abstract: A method of manufacturing a dental restoration including a construction step (S2) of preparing construction data for a dental tool machine for machining the dental restoration from a workpiece. The construction data defines at least the geometry of the dental restoration within the workpiece. The method includes a starting step (S3) of starting machining of the dental restoration from the workpiece in accordance with the construction data. The method also includes a preparing step (S4) of starting preparing, before termination of the construction step (S2), the dental tool machine at least through equipping it with all the consumables essential for starting the starting step (S3), and completing preparing the dental tool machine before start of the starting step (S3).

公开(公告)号：US11650014B2

公开(公告)日：2023-05-16

申请号：US17674074

申请日：2022-02-17

Applicant: DENTSPLY SIRONA Inc.

Inventor： Peter Fornoff ,  Christian Schmidt

IPC: F27B17/02 ,  A61C13/20

CPC classification number: F27B17/025 ,  A61C13/20 ,  F27B17/02

Abstract: A sintering furnace for components 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：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：US11771523B2

公开(公告)日：2023-10-03

申请号：US16708531

申请日：2019-12-10

Applicant: DENTSPLY SIRONA INC.

Inventor： Hans-Christian Schneider ,  Oliver Nowarra ,  Daniel Weiß ,  Peter Fornoff

IPC: A61C5/77 ,  A61C13/00 ,  G06N3/02 ,  B33Y50/02 ,  B33Y80/00

CPC classification number: A61C5/77 ,  A61C13/0019 ,  A61C13/0022 ,  B33Y80/00 ,  G06N3/02

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.

公开(公告)号：US10948235B2

公开(公告)日：2021-03-16

申请号：US15550401

申请日：2016-02-12

Applicant: DENTSPLY SIRONA inc.

Inventor： Peter Fornoff ,  Christian Schmidt

IPC: F27B17/02 ,  F27B5/14 ,  F27D11/02 ,  F27D11/06 ,  F27D99/00 ,  F27B17/00 ,  F27D11/08

Abstract: The invention relates to a sintering furnace for components made of a sintered material, in particular for dental components, comprising a furnace chamber having a chamber volume (VK) and a chamber inner surface (OK), wherein a heat-up device, a receiving space having a gross volume (VB) located in the chamber volume (VK) and delimited by the heat-up 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 a plurality of walls having a wall portion to be opened for introduction into the receiving space of a component to be sintered and having an object volume (VO). In the furnace chamber the heat-up device has a thermal radiator having a radiation field which radiator is disposed on at least one side of the receiving space. Said thermal radiator has a specific resistance of 0.1 Ωmm2/m to 1,000,000 Ωmm2/m and has a total surface, the maximum of which is three times the chamber inner surface (OK). With this sintering furnace a heat-up temperature of at least 1100° C. can be achieved within 5 minutes at a maximum power input of 1.5 kW.

公开(公告)号：US11607293B2

公开(公告)日：2023-03-21

申请号：US16344860

申请日：2017-11-03

Applicant: DENTSPLY SIRONA inc.

Inventor： Oliver Nowarra ,  Joachim Pfeiffer ,  Peter Fornoff

IPC: A61C7/16 ,  A61C5/30 ,  A61C8/00 ,  B29C64/386 ,  G06F30/10 ,  A61C13/00 ,  A61C13/34 ,  A61C7/00 ,  G06T19/20

Abstract: The invention relates to a method for constructing at least one dental prosthetic part or a bracket, with at least one adhesive surface, in which a 3D model is made of the dental prosthetic part. Recesses are constructed on the adhesive surface of the 3D model.

公开(公告)号：US10070943B2

公开(公告)日：2018-09-11

申请号：US14134872

申请日：2013-12-19

Applicant: DENTSPLY SIRONA Inc.

Inventor： Peter Fornoff

IPC: A61C3/00 ,  A61C7/16 ,  A61C7/12 ,  A61C7/14 ,  A61C7/20

CPC classification number: A61C7/16 ,  A61C7/12 ,  A61C7/14 ,  A61C7/146 ,  A61C7/20 ,  A61C2202/00 ,  Y10T29/49567 ,  Y10T29/49568

Abstract: A carrier for at least one fastening element (4) to be fabricated having an attachment area whereby the carrier is provided with a holding piece (3) for attachment in a receiving part of a finishing machine and whereby the carrier includes a carrier piece (2) for the fastening element (4) and the carrier piece (2) is embedded at least partially in the carrier piece (2) in a manner so that the attachment area (4b) of the fastening element (4) can be fabricated. A method for producing a fastening element (4) to be finished and to be attached to an individual surface whereby the contour of the attachment area is defined with the aid of data of the surface onto which the fastening element (4) is to be attached and whereby a pre-shaped, not yet individualized fastening element (4) is formed by removal of material to produce the specific contour. Furthermore, an auxiliary positioning part (21) is provided with a contour that is continued by the contour of the attachment area, which is also defined by the surface onto which the fastening element (4) is to be attached.