n. The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal ligament—and diseases and conditions that affect them.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the branch of dentistry dealing with diseases of the gums and other structures around the teeth
Word Usage
"Both say in their ads that they can do all kinds of dental procedures -- oral reconstruction, root canals, orthodontics, periodontics, and children's dentistry for Dr. Vargas."