In the case of severe gum disease or root fracture, teeth occasionally cannot be saved. Your periodontist and dentist will help determine which teeth are treatable, and which teeth need to be removed. Extraction of these untreatable teeth or removal of a portion of the root can be performed by your periodontist. In order to prevent the jaws from shrinking after a tooth has been removed; the placement of a bone graft can be completed at the time of tooth removal.