Oral cancer screening is a visual examination of the mouth and throat to detect abnormal cell growth, lesions, or other signs of oral cancer. Ways to prevent oral cancer is Avoid Tobacco which is a significant risk factor for oral cancer. Limit the use of Alcohol. Eat a Healthy Diet. A diet rich in fruits and vegetables can help reduce the risk of oral cancer. Practice good oral hygiene by regular brushing, flossing, and dental check-ups can help detect oral cancer early.