公开(公告)号：EP4230120A1

公开(公告)日：2023-08-23

申请号：EP23156572.2

申请日：2023-02-14

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd. ,  Kyungpook National University Industry-Academic Cooperation Foundation

发明人： JEONG, Hyo Sang ,  HAN, Su Min ,  KIM, Jee Hyun ,  LEE, Kyu Bok ,  CHO, Ho Seong ,  LEE, Weon Joon

IPC分类号： A61B5/00

摘要： Disclosed are an intraoral scanner having a tomographic imaging function capable of inspecting the condition of abrasion or filling of oral structures such as teeth and dental filling materials, and a method for detecting abrasion or filling of oral structures using the same. The intraoral scanner having a tomographic imaging function comprises: an OCT body (6) configured to obtain an internal cross-sectional image of an oral structure (T) by transmitting layer measurement light through the oral structure (T) and detecting reflected light reflected by a surface and an inside of the oral structure (T); an OCT scan probe (8) configured to irradiate the layer measurement light emitted from the OCT body (6) onto the oral structure (T) and transfer the reflected light reflected from the oral structure (T) to the OCT body (6); and a control/processing unit (48) configured to control the OCT body (6), take tomographic images of the oral structure (T) at two or more positions while proceeding in a predetermined direction along the surface of the oral structure (T), obtain two or more two-dimensional cross-sectional images of the oral structure (T), extract an abrasion or filling area for the respective two-dimensional cross-sectional images obtained, calculate cross-sectional position information of the abrasion or filling area, then arrange the position information of the abrasion or filling area obtained from the respective two-dimensional cross-sectional images in positions where the respective two-dimensional cross-sectional images have been obtained, and obtain three-dimensional shape information of the abrasion or filling area.

公开(公告)号：EP4190231A3

公开(公告)日：2023-09-27

申请号：EP22210237.8

申请日：2022-11-29

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  CHO, Min Soo ,  HAN, Su Min ,  LEE, Weon Joon

IPC分类号： A61B5/00

摘要： Disclosed are an intraoral scanner having a tomography function capable of setting a tomography area using shape information of an oral cavity, and an intraoral tomography method using the same. The intraoral scanner having the tomography function includes a shape measurement light projector (12) configured to irradiate shape measurement light for obtaining a shape image of an oral structure; a shape measurement camera (14) configured to obtain a surface shape image of the oral structure by detecting reflected light formed when the shape measurement light is reflected from a surface of the oral structure; an optical coherence tomography (OCT) body (22) configured to transmit tomography measurement light to the oral structure and detect reflected light reflected inside the oral structure S to obtain an internal cross-sectional image of the oral structure; an OCT scan probe (24) configured to irradiate the tomography measurement light emitted from the OCT body (22) onto a desired position of the oral structure and transfer the reflected light reflected from the oral structure to the OCT body (22); and a beam splitter (30) configured to superimpose optical paths of the shape measurement light irradiated from the shape measurement light projector (12) and the tomography measurement light irradiated from the OCT scan probe (24).

公开(公告)号：EP4198447A1

公开(公告)日：2023-06-21

申请号：EP22210234.5

申请日：2022-11-29

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  CHO, Min Soo ,  LEE, Weon Joon

IPC分类号： G01B9/02055 ,  G01B9/02091

摘要： Disclosed is a calibration method of optical coherence tomography device using a non-transmissive planar target. The calibration method of an optical coherence tomography device which comprises a light source (10) that generates a measurement light (L) irradiated to the surface of a calibration target (T); a beam splitter (12) that splits the measurement light (L) into a reference light (R) and a sample measurement light (LI); a reference mirror(20) that reflects the reference light (R) and generates a reflected reference light (Rl); a scan unit (30) that reflects the sample measuring light (L1) and directs the sample measuring light (L1) to the calibration target (T); and a photodetector(40) that detects an interference light (I) formed by superimposing a reflected signal light (S) formed by reflecting the sample measurement light (L1) from the calibration target (T) and the reflected reference light (R1), and obtains the surface and inside image of the calibration target (T), comprises the steps of: obtaining three-dimensional image of the surface and the inside of the calibration target (T) by scanning the calibration target (T) using the optical coherence tomography device, and extracting a surface shape image of the calibration target (T) from the obtained the three-dimensional image; and calibrating the surface shape image of the calibration target (T) obtained by the optical coherence tomography device, according to the actual surface shape of the calibration target (T).

公开(公告)号：EP4230119A1

公开(公告)日：2023-08-23

申请号：EP23156482.4

申请日：2023-02-14

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd. ,  Kyungpook National University Industry-Academic Cooperation Foundation

发明人： JEONG, Hyo Sang ,  HAN, Su Min ,  KIM, Jee Hyun ,  LEE, Kyu Bok ,  SON, Keun Ba Da ,  LEE, Weon Joon

IPC分类号： A61B5/00

摘要： Disclosed are an intraoral scanner having a tomographic imaging function capable of inspecting the state of cracks in oral structures such as teeth and dental filling materials, and a method for detecting cracks in oral structures using the same. The intraoral scanner having a tomographic imaging function comprises: an OCT body (6) configured to obtain an internal cross-sectional image of an oral structure (T) by transmitting layer measurement light through the oral structure (T) and detecting reflected light reflected by a surface and an inside of the oral structure (T); an OCT scan probe (8) configured to irradiate the layer measurement light emitted from the OCT body (6) onto the oral structure (T) and transfer the reflected light reflected from the oral structure (T) to the OCT body (6); and a control/processing unit (48) configured to control the OCT body (6), take a tomographic image of the oral structure (T) while proceeding in a predetermined direction along the surface of the oral structure (T), obtain two or more two-dimensional cross-sectional images of the oral structure (T), extract an internal crack area for the respective two-dimensional cross-sectional images obtained, calculate cross-sectional position information of the internal crack, then arrange the position information of the internal crack obtained from the respective two-dimensional cross-sectional images in positions where the respective two-dimensional cross-sectional images have been obtained, and obtain three-dimensional shape information of the internal crack.

公开(公告)号：EP4047303A1

公开(公告)日：2022-08-24

申请号：EP22157847.9

申请日：2022-02-21

申请人： Huvitz Co., Ltd. ,  Huvitz Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  CHO, Min Soo

IPC分类号： G01B9/02055 ,  G01B9/02091

摘要： The present invention relates to an optical coherence tomography (OCT)-based intraoral scanner calibration device including: a light source; an optical coupler for splitting the path of light irradiated from the light source in first light and second light; a reference part for generating reference light from the first light split by the optical coupler; a sample part for generating measurement light from the second light split by the optical coupler; and a signal generator for generating an OCT image from the reference light and the measurement light.

公开(公告)号：EP4438004A1

公开(公告)日：2024-10-02

申请号：EP24165224.7

申请日：2024-03-21

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  CHO, Min Soo ,  LEE, Weon Joon

IPC分类号： A61C9/00 ,  A61C13/00

CPC分类号： A61C9/0073 ,  A61C13/0004 ,  A61C5/77

摘要： Disclosed is a method of obtaining the shape of a crown region for manufacturing a crown prosthesis by using an intraoral scanner having a tomographic imaging function. The method of obtaining the shape of a crown region comprises the steps of: obtaining a three-dimensional surface shape image of an oral structure including a tooth on which tooth deletion has been performed; setting a surface edge of a tooth deletion region as a location of a region of interest (52); scanning a surface shape and an internal cross-section of the oral structure at a predetermined location of the oral structure, and obtaining a partial surface shape image and a partial internal cross-sectional image of the oral structure; detecting a location of a crown margin (56) corresponding to an edge of a region where a tooth was actually deleted from the partial internal cross-sectional image; merging the location of the crown margin (56) with a surface image of a tooth (50), and causing a margin of the tooth deletion region obtained from a surface shape image of the tooth (50) to extend to the location of the crown margin (56).

公开(公告)号：EP4190231A2

公开(公告)日：2023-06-07

申请号：EP22210237.8

申请日：2022-11-29

申请人： Huvitz Co., Ltd. ,  Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  CHO, Min Soo ,  HAN, Su Min ,  LEE, Weon Joon

IPC分类号： A61B5/00

摘要： Disclosed are an intraoral scanner having a tomography function capable of setting a tomography area using shape information of an oral cavity, and an intraoral tomography method using the same. The intraoral scanner having the tomography function includes a shape measurement light projector (12) configured to irradiate shape measurement light for obtaining a shape image of an oral structure; a shape measurement camera (14) configured to obtain a surface shape image of the oral structure by detecting reflected light formed when the shape measurement light is reflected from a surface of the oral structure; an optical coherence tomography (OCT) body (22) configured to transmit tomography measurement light to the oral structure and detect reflected light reflected inside the oral structure S to obtain an internal cross-sectional image of the oral structure; an OCT scan probe (24) configured to irradiate the tomography measurement light emitted from the OCT body (22) onto a desired position of the oral structure and transfer the reflected light reflected from the oral structure to the OCT body (22); and a beam splitter (30) configured to superimpose optical paths of the shape measurement light irradiated from the shape measurement light projector (12) and the tomography measurement light irradiated from the OCT scan probe (24).

公开(公告)号：EP4046591A1

公开(公告)日：2022-08-24

申请号：EP22157848.7

申请日：2022-02-21

申请人： Huvitz Co., Ltd. ,  Huvitz Ossvis Co., Ltd.

发明人： JEONG, Hyo Sang ,  HAN, Su Min

IPC分类号： A61C9/00 ,  A61C5/70 ,  A61C13/00 ,  G16H30/40 ,  A61C5/77

摘要： The present invention relates to a method for obtaining a subgingival marginal shape for a prosthesis design non-invasively by means of an optical coherence tomography (OCT) scanner for obtaining a subgingival marginal shape and an intraoral scanner for obtaining a tooth surface shape, the method including the steps of: obtaining a surface shape of a prepared tooth by means of the intraoral scanner; obtaining the subgingival marginal shape (crown margin line) of the prepared tooth by means of the OCT scanner; and merging the surface shape of the prepared tooth with the subgingival marginal shape to obtain a final three-dimensional shape of the prepared tooth.

公开(公告)号：EP4014846A1

公开(公告)日：2022-06-22

申请号：EP21212712.0

申请日：2021-12-07

申请人： Huvitz Co., Ltd.

发明人： JEONG, Hyo Sang ,  HAN, Su Min

IPC分类号： A61B5/00

摘要： Disclosed is a tomography convergence-type oral scanner that provides optical tomography images of the shape of a tooth surface and the inside of a tooth. The tomography convergence-type oral scanner comprises: an oral scanning unit comprising a projector including a first light source for generating visible light, and a camera for generating image data by receiving the visible light reflected from a tooth after the visible light generated from the light source is incident on the tooth; an optical tomography scanning unit comprising an OCT body including a second light source that has a different wavelength from the first light source and generates a measurement light incident on the tooth, a beam splitter for splitting the measurement light into a reference light and a measurement light, a reference mirror that reflects the reference light, and a photodetector for detecting an interference light generated by superposition of a signal light generated by reflection of the measurement light by the tooth and the reference light reflected by the reference mirror, and an OCT scan probe including a collimator for converting the measurement light divided by the beam splitter into a parallel light and a MEMS mirror for reflecting the converted parallel light; and a dichroic mirror for transmitting the visible light generated by the oral scanning unit and reflecting the parallel light reflected by the MEMS mirror of the optical tomography scanning unit, thereby irradiating a tooth to be measured.