Is it true that too many mouth surgeries can cause mouth cancer?

What surgery?: And why would the surgery be carcinogenic? A cancerous lesion can form after a genetic mutation, usually precipitated by an outside carcinogenic agent (like smoking or chewing tobacco). Some cancers also form through genetic predisposition. Maybe your advisor can explain further.

No: Surgery/surgeries can not induce a malignancy.

No.: No. See oral surgeon or ENT doc if you have any of these symptoms: Persistent mouth sore, persistent mouth pain, a lump or thickening in the cheek, a white/red patch on the gums, tongue, tonsil, or lining of the mouth, a sore throat, hoarseness or feeling that something is caught in the throat that does not go away, difficulty swallowing/chewing.