You may not have anything to eat or drink (including water) for eight (8) hours prior to the appointment. Do not ignore a head or chest cold when having oral surgery. Call immediately if you have any symptoms of the above, or have a fever. A change of appointment may be necessary. No smoking at least 12 hours before surgery. Ideally, cut down or stop smoking as soon as possible prior to the day of surgery. Visit the restroom half hour prior to your appointment.