Biopsy: We check tongue; cheeks, lips and throat for abnormalities that should be removed and sent for analysis. Lesions if they are caught early makes for much better prognosis.
Throughout the medical field, a biopsy is simply the removal of a tissue sample to determine if it is diseases. In dentistry, teeth and gums are sent for biopsy. The role of a biopsy in the dental industry is to diagnose oral cancer. In these instances, a brush biopsy is used to identify oral lesions that warrant further attention.
If you have unexplained lesions in your mouth, they need to be examined by a dentist. They may or may not be cancerous, but they need medical attention nonetheless.