You can brush your teeth on the day of the surgery, however, be careful not to dislodge the blood clot formed or disturb any stitches places.  DO NOT rinse your mouth vigorously and avoid the surgical site whilst brushing.  After 24 hours, rinse your mouth with warm salt water (1/4 teaspoon of salt in a glass of water) or corsodyl® mouthwash up to three times a day, to ensure the surgical site is kept clean whilst healing.  Depending on how extensive the surgery was, this can be continued for a week.