Utilizing a special fluorescent light, the device can help your dentist find “hidden” cavities before they become a major problem. While improving the overall oral health of Americans by hardening tooth enamel, fluoridation has also ironically made early cavities harder to detect, since incipient cavities that once began on the tooth’s surface have now tend to start below the surface. By improving cavity detection and noninvasive examination of teeth without repeated X-ray exposure, the devise allows Dr. Charlin to find minor problems and treat them early before they turn into major problems.