Although it might not be as important as keeping the post operative instruction, many patients tend to forget to get ready, both physically and mentally, for an invasive oral surgery like bone grafting. Having correct pre-operative behaviour will help your healing process, and speed it up greatly, while the risk of infection and postoperative complications will be minimized. The first and most important thing you can do is brush and floss thoroughly before going to your dentist, oral surgeon or periodontist, so as to minimize the amount of bacteria present in your mouth and saliva, as this will reduce the risk of infections greatly. Facial hair should also be trimmed to the extent that it will not touch the affected area, and ladies are kindly ask to refrain from wearing make up.