DIAGNOdent, a diagnostic device for assessing the presence or absence of pit and fissure caries. It is a:
INFRARED LASER FLUORESCENCE (DIAGNOdent)

DIAGNOdent is an instrument designed to facilitate the detection and quantification of dental caries on occlusal and smooth surfaces. 
It uses a diode laser light source and a fiberoptic cable that transmits the light to a handheld probe with a fiberoptic eye in the tip. 
The light is absorbed and induces infrared fluorescence by organic and inorganic material. 
The emitted fluorescence is collected at the probe tip, transmitted through ascending fibers, and processed and presented on a display window as an integer between 0 and 99.
Fiberoptic transilluminator
Portable digital X-ray device
Laser fluorescence device
Electronic explorer