How long will my mouth be sore after extraction? The following will help speed recovery: Take painkillers as prescribed by your dentist or oral surgeon. After 24 hours, rinse your mouth gently with warm salt water several times a day to reduce swelling and relieve pain. Change gauze pads before they become soaked with blood. Relax after surgery. ... Avoid smoking. Posted By admin | Comments Off on How long will my mouth be sore after extraction?