Has anyone ever had a lavage done on their jaw?

TMJ. A TMJ surgical procedure, TMJ arthroscopy with lysis and lavage is a recognized procedure for TMJ disorders. Another procedure, arthrocentesis, also lavages the jaw joint. Both good when indicated. Ask oral surgeon for advice. Ask a more complete question for a more complete answer.
For trauma. When the jaw is fractured, or infected, the surgeon may perform lavage to wash out infection.