Dental Calculus Image Based on Optical Coherence Tomography

Dental Calculus Image Based on Optical Coherence Tomography Yao-Sheng Hsieh, Yi-Ching Ho, Shyh-Yuan Lee, Ching-Cheng Chuang, Chun-Yang Wang, and ChiaWei Sun 1 Department of Photonics, National Chiao-Tung University, Hsinchu, Taiwan, R.O.C. 2 School of Dentistry, National Yang-Ming University, Taipei, Taiwan, R.O.C. 3 Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan, R.O.C. 4 Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. 5 Biophotonics Interdisciplinary Research Center and Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan, R.O.C. *[email protected] Abstract: In this study, the dental calculus was characterized and imaged by means of swept-source optical coherence tomography (SSOCT). The refractive indices of enamel, dentin, cementum and calculus were measured as 1.625±0.024, 1.534±0.029, 1.570±0.021 and 1.896±0.085, respectively. The dental calculus lead strong scattering property and thus the region can be identified under enamel with SSOCT imaging. An extracted human tooth with calculus was covered by gingiva tissue as in vitro sample for SSOCT imaging.