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Dental OCT

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Abstract

We present here the first in vivo optical coherence tomography (OCT) images of human dental tissue. A novel dental optical coherence tomography system has been developed. This system incorporates the interferometer sample arm and transverse scanning optics into a handpiece that can be used intraorally to image human dental tissues. The average imaging depth of this system varied from 3 mm in hard tissues to 1.5 mm in soft tissues. We discuss the application of this imaging system for dentistry and illustrate the potential of our dental OCT system for diagnosis of periodontal disease, detection of caries, and evaluation of dental restorations.

©1998 Optical Society of America

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Supplementary Material (1)

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Figures (6)

Fig. 1
Fig. 1 Schematic of the in vivo dental OCT System.
Fig. 2.
Fig. 2. Generation of B-Scan from A-Scans. Click to view movie. Real time acquisition corresponds to 5 A-Scans per second resulting in an acquisition period of 45 seconds for the B-Scan. [Media 1]
Fig. 3.
Fig. 3. Photograph of dental OCT handpiece.
Fig. 4
Fig. 4 (a) Cartoon of dental tissue, (b) OCT image of anterior tooth, and (c) OCT image of posterior tooth.
Fig. 5
Fig. 5 OCT images of extracted tooth showing (a) artifacts present in enamel layer due to birefringence and (b) elimination of these artifacts using a birefringence insensitive OCT system.
Fig. 6.
Fig. 6. OCT image of dental composite restoration from the (a) occlusal surface and the (b) midfacial surface.
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