The DIAGNOdent is a diagnostic device that aids the dentist in making treatment decisions with confidence. Unlike traditional diagnostic methods, DIAGNOdent is an extremely accurate and reliable adjunct for the detection of subsurface caries. It removes the guesswork that accompanies many treatment decisions regarding questionable areas, such as stained or discoloured grooves.

Using only an explorer and bitewing X-rays, a dentist is poorly equipped to detect incipient caries lesions. With an explorer, it is virtually impossible to probe drop-shaped fissures, looking for a “stick”. Bitewing X-rays also have limitations as a diagnostic tool when confronted with the elusiveness of hidden caries. While bitewing X-rays can identify larger areas of decay, small sub-surface caries lesions are rarely detected.