SWIR

When combined with air drying, shortwave-infrared can be used to detect active dental cavities. This is possible because active cavities are porous and hold more water, which affects the infrared measurements around the affected area as the tooth dries. (Image: Chang et al.)

SWIR imaging shows promise for detecting active tooth decay

Active cavities are porous and hold more water, influencing the infrared measurements around the affected area as the tooth dries

Image: atdigit/shutterstock.com

Quantum leap for SWIR imaging

There’s a renaissance underway in shortwave infrared imaging as thin-film photodetectors come online. Tim Hayes reports

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