This is an oral cancer screening system. Oral cancer is rising in the US. In North America, in 2006, 34,000 people were diagnosed with oral cancer and 8,500 died from this disease. You are at increased risk if you smoke, drink alcohol, or over the age of 40. 50% of oral cancer patients die within 5 years, but 80-90 % survive if diagnosed early. For your oral cancer screening, Dental Expressions uses the Velscope cancer screening system.