More and more people are becoming diagnosed with oral cancer each year. Some risk factors that can cause it are tobacco, alcohol, sun exposure, HPV, and past history of oral cancer. You can also acquire oral cancer with no risk factors at all. It is important that when you go for your routine cleaning, or at least once a year, that your dentist preforms an oral cancer screening. For more info, click here : http://www.cancer.gov/cancertopics/wyntk/oral/page1