Wide field of view optical coherence tomography for structural and functional diagnoses in dentistry

Joo Beom Eom; Jae Sung Ahn; Jonghyun Eom; Anjin Park

doi:10.1117/1.JBO.23.7.076008

14 July 2018 Wide field of view optical coherence tomography for structural and functional diagnoses in dentistry

Joo Beom Eom, Jae Sung Ahn, Jonghyun Eom, Anjin Park

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Journal of Biomedical Optics, Vol. 23, Issue 7, 076008 (July 2018). https://doi.org/10.1117/1.JBO.23.7.076008

Abstract

We report herein the fabrication and performance response of a three-dimensional (3-D) intraoral scan probe based on optical coherence tomography (OCT) that enables 3-D structural and functional diagnoses of the human teeth. The OCT system was configured using a swept-source OCT (SS-OCT) with a center wavelength of 1310 nm. The scan probe was built using an MEMS mirror and an optical collimator. The implemented SS-OCT equipped with the MEMS-based scan probe yielded an axial resolution of 10 μm and a scan range of 8 × 8 mm². Two-dimensional (2-D) cross-sectional images of the teeth were acquired by the scan probe based on the OCT. The 3-D volume image was acquired by combining a series of 2-D images, which includes internal and structural information of the human teeth. To utilize the OCT system as an intraoral scanner, partially overlapped 3-D volume images were sequentially acquired and stitched. The 3-D stitching was implemented based on an iterative closest point algorithm. The feasibility of the intraoral scan probe is demonstrated based on its ability to image and characterize the structure and function of the human teeth.

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Joo Beom Eom, Jae Sung Ahn, Jonghyun Eom, and Anjin Park "Wide field of view optical coherence tomography for structural and functional diagnoses in dentistry," Journal of Biomedical Optics 23(7), 076008 (14 July 2018). https://doi.org/10.1117/1.JBO.23.7.076008

Received: 21 March 2018; Accepted: 26 June 2018; Published: 14 July 2018

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