title: Subgingival calculus imaging based on swept-source optical coherence tomography.
abstract: We characterized and imaged dental calculus using swept-source optical coherence tomography (SS-OCT). 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 2.097 ± 0.094, respectively. Dental calculus leads strong scattering properties, and thus, the region can be identified from enamel with SS-OCT imaging. An extracted human tooth with calculus is covered with gingiva tissue as an in vitro sample for tomographic imaging.
authors.affiliation: National Yang-Ming University, Biophotonics Interdisciplinary Research Center and Institute of Biophotonics, No. 155, Sec. 2, Linong Street, Taipei, Taiwan 112, Taipei, Taiwan.
authors.forename: Yao-Sheng
authors.initials: YS
authors.lastname: Hsieh
authors.forename: Yi-Ching
authors.initials: YC
authors.lastname: Ho
authors.forename: Shyh-Yuan
authors.initials: SY
authors.lastname: Lee
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Lu
authors.forename: Cho-Pei
authors.initials: CP
authors.lastname: Jiang
authors.forename: Ching-Cheng
authors.initials: CC
authors.lastname: Chuang
authors.forename: Chun-Yang
authors.initials: CY
authors.lastname: Wang
authors.forename: Chia-Wei
authors.initials: CW
authors.lastname: Sun
mesh_terms: D003728:Dental Calculus / Q000737:chemistry / Q000175:diagnosis* / Q000473:pathology; D003731:Dental Caries / Q000175:diagnosis; D003739:Dental Cementum / Q000737:chemistry; D003743:Dental Enamel / Q000737:chemistry; D003804:Dentin / Q000737:chemistry; D005881:Gingiva / Q000473:pathology; D006801:Humans; D012031:Refractometry / Q000295:instrumentation / Q000379:methods; D041623:Tomography, Optical Coherence / Q000295:instrumentation / Q000379:methods*