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Intraoral imaging of teeth with near-IR light provides increased contrast of dental caries and restorative materials compared to visible inspection and digital radiography. The objective of this study was to investigate the near-IR optical properties of the dental pulp-chamber floor, walls and canal orifices. We imaged in vitro extracted human posterior teeth at 1300-nm and 1500-1700-nm in reflectance and transillumination and compared the tissues properties with visible light images and quantitative light fluorescence. Transillumination of posterior teeth at both 1300-nm and 1500-1700-nm yielded significantly higher contrast between the pulp-chamber floor and walls than all other methods.
Jacob C. Simon,Emmanuel O. Mogire,Sam Y. Yun, andDaniel Fried
"Multispectral SWIR images of the pulp-chamber of posterior teeth in vitro", Proc. SPIE 11627, Photonic Therapeutics and Diagnostics in Dentistry, Head and Neck Surgery, and Otolaryngology, 116270L (5 March 2021); https://doi.org/10.1117/12.2584900
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Jacob C. Simon, Emmanuel O. Mogire, Sam Y. Yun, Daniel Fried, "Multispectral SWIR images of the pulp-chamber of posterior teeth in vitro," Proc. SPIE 11627, Photonic Therapeutics and Diagnostics in Dentistry, Head and Neck Surgery, and Otolaryngology, 116270L (5 March 2021); https://doi.org/10.1117/12.2584900