Oral cancer screening light is used by a dentist to examine whether a patient has cancer or precancerous conditions in their oral cavity. The objective of this test is early detection of cancer when it is in a easily treatable stage. Most dentist do this test as a routine check for oral cancer. The oral cancer screening light helps the dentist to detect abnormal cells in a patient's oral cavity. If you're looking for high quality oral screening devices, you can try oral screening products from Critical Dental.