Gingivectomy is a surgery that removes and reforms diseased gum related to serious underlying conditions. Gingivectomy is performed in a dentist's office, primarily done one quadrant of the mouth at a time under local anesthetic. Clinical attachment of the gum to teeth and supporting structures determine the success of the surgery. Surgery required beyond gingivectomy involves the regeneration of attachment structures through tissue and bone grafts. Usually dilantin, a drug used to treat seizures in epileptics can cause overgrowth of the gums, especially in persons who do not brush their teeth regularly. And certain other common drugs can cause similar conditions with dilantin is blood pressure medications (Cardizem), birth control and hormone replacement drugs (Progestogen) and immunosupressive agents (cyclosporine). Better oral hygiene generally reduces this complication. This type of gingival enlargement can be prevented by good hygiene, but once it occurs, the only way to eliminate it is through surgical removal of the excess tissues or gingivectomy.