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1.发明公开
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).
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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.
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3.发明公开
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).
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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
发明人： JEONG, Hyo Sang , HAN, Su Min
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.
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5.发明公开
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.
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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.
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