The malformed periodontium will occur very early (days) after the adult tooth erupts. (dogbeachvet.com)
The periodontia are the tissues that surround and support your cat's teeth. (catfriendly.com)
The periodontium is comprised of tissues that support the tooth - the gingiva (gums), cementum (connective tissue that covers tooth root), alveolar bone (socket), and periodontal ligament (fibers that attach the tooth to the alveolar bone). (petinsuranceguideus.com)