Antibiotic therapy can be used for mild to moderate periodontal disease in combination with deep cleanings to improve and maintain the health of your gums. Grafting procedures can be performed to restore gum tissue and bone density. Gum grafts may be performed to replace the gum tissue that has receded while bone grafts can restore any bone volume that was lost as a result of your periodontal disease, helping to save adult teeth. The loss of gum tissue and bone are key contributors to missing teeth in adults. It may seem counterintuitive, but tooth replacement can be used to save adult teeth. This is due to the fact that your teeth need each other to stay healthy. Your lower and upper teeth rely upon the opposing force to keep them in place. Without contact your teeth may loosen, so if you ignore missing teeth in adults and neglect to replace them, it may create difficulties with your other teeth.