US 12,324,650 B2
Intraoral scanner having tomographic imaging function and method for detecting cracks in oral structures using the same
Hyo Sang Jeong, Anyang-si (KR); Su Min Han, Anyang-si (KR); Jee Hyun Kim, Daegu (KR); Kyu Bok Lee, Daegu (KR); Keun Ba Da Son, Daegu (KR); and Weon Joon Lee, Anyang-si (KR)
Assigned to Huvitz Co., Ltd., Anyang-si (KR); Ossvis Co., Ltd., Anyang-si (KR); and Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR)
Filed by Huvitz Co., Ltd., Anyang-si (KR); Ossvis Co., Ltd., Anyang-si (KR); and Kyungpook Nat'l Univ Industry-Academic Coop Fndn, Daegu (KR)
Filed on Feb. 21, 2023, as Appl. No. 18/171,987.
Claims priority of application No. 10-2022-0022433 (KR), filed on Feb. 21, 2022.
Prior Publication US 2023/0263396 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01)
CPC A61B 5/0088 (2013.01) [A61B 5/0066 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An intraoral scanner having a tomographic imaging function, comprising:
an OCT body configured to obtain an internal cross-sectional image of an oral structure by transmitting layer measurement light through the oral structure and detecting reflected light reflected by a surface and an inside of the oral structure;
an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light reflected from the oral structure to the OCT body; and
a control/processing unit configured to control the OCT body, take a tomographic image of the oral structure while the layer measurement light proceeding in a predetermined direction along the surface of the oral structure, obtain two or more two-dimensional cross-sectional images of the oral structure, 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 each position where the respective two-dimensional cross-sectional images have been obtained, and thereby obtain three-dimensional shape information of the internal crack.