Oral cancer is cancer that develops in the tissues of the mouth or throat. It belongs to a larger group of cancers called head and neck cancers. Most develop in the squamous cells found in your mouth, tongue, and lipsbest oral surgery in leicester.Overall, 60 percent of all people with oral cancer will survive for five years or more. The earlier the stage at diagnosis, the higher the chance of survival after treatment. In fact, the five-year overall survival rate in those with stage 1 and 2 oral cancers is typically 70 to 90 percent.