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Photoacoustic microscopy of human teeth

Publication ,  Conference
Rao, B; Cai, X; Christopher, F; Yao, J; Li, L; Duong, S; Liaw, LH; Holtzman, J; Wilder-Smith, P; Wang, LV
Published in: Progress in Biomedical Optics and Imaging - Proceedings of SPIE
March 31, 2011

Photoacoustic microscopy (PAM) utilizes short laser pulses to deposit energy into light absorbers and sensitively detects the ultrasonic waves the absorbers generate in response. PAM directly renders a three-dimensional spatial distribution of sub-surface optical absorbers. Unlike other optical imaging technologies, PAM features label-free optical absorption contrast and excellent imaging depths. Standard dental imaging instruments are limited to X-ray and CCD cameras. Subsurface optical dental imaging is difficult due to the highly-scattering enamel and dentin tissue. Thus, very few imaging methods can detect dental decay or diagnose dental pulp, which is the innermost part of the tooth, containing the nerves, blood vessels, and other cells. Here, we conducted a feasibility study on imaging dental decay and dental pulp with PAM. Our results showed that PAM is sensitive to the color change associated with dental decay. Although the relative PA signal distribution may be affected by surface contours and subsurface reflections from deeper dental tissue, monitoring changes in the PA signals (at the same site) over time is necessary to identify the progress of dental decay. Our results also showed that deep-imaging, near-infrared (NIR) PAM can sensitively image blood in the dental pulp of an in vitro tooth. In conclusion, PAM is a promising tool for imaging both dental decay and dental pulp. © 2011 SPIE.

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Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9780819484215

Publication Date

March 31, 2011

Volume

7884
 

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Rao, B., Cai, X., Christopher, F., Yao, J., Li, L., Duong, S., … Wang, L. V. (2011). Photoacoustic microscopy of human teeth. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 7884). https://doi.org/10.1117/12.874070
Rao, B., X. Cai, F. Christopher, J. Yao, L. Li, S. Duong, L. H. Liaw, J. Holtzman, P. Wilder-Smith, and L. V. Wang. “Photoacoustic microscopy of human teeth.” In Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol. 7884, 2011. https://doi.org/10.1117/12.874070.
Rao B, Cai X, Christopher F, Yao J, Li L, Duong S, et al. Photoacoustic microscopy of human teeth. In: Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2011.
Rao, B., et al. “Photoacoustic microscopy of human teeth.” Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 7884, 2011. Scopus, doi:10.1117/12.874070.
Rao B, Cai X, Christopher F, Yao J, Li L, Duong S, Liaw LH, Holtzman J, Wilder-Smith P, Wang LV. Photoacoustic microscopy of human teeth. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2011.
Journal cover image

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9780819484215

Publication Date

March 31, 2011

Volume

7884