How do people develop mouth cancer?

Tobacco and alcohol : Predominately, tobacco use and drinking alcohol can lead to oral cancer. A recent study showed that over 90% of oral cancers were associated with combining heavy smoking and heavy drinking.

Annual Screening!: A variety of "triggers" i.e., chronic inflammation (repeated habitual trauma, can also evolve within lesions of diseases like lupus), chronic carcinogen exposure (smoking, chewing tobacco), oral hpv infection, same strains that increase risk for cervical cancer). Dysplasia march along from mild to moderate to severe & can evolve into a malignancy. Annual oral cancer screening is vital & velscope.