How you prepare

Additional tests

Some dentists use special tests in addition to the oral exam to screen for oral cancer. It's not clear if these tests offer any additional benefit over the oral exam. Special tests may involve:

• Oral cancer screening dye. Rinsing your mouth with a special blue dye before an exam. Abnormal cells in your mouth may take up the dye and appear blue.
• Oral cancer screening light. Shining a light in your mouth during an exam. The light makes healthy tissue appear dark and makes abnormal tissue appear white.