surrounding a tooth / Relating to the periodontium / Relating to periodontics

In a periodontal way.

(dentistry) The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal ligament—and diseases and conditions that affect them.

(periodontology) A serious form or stage of periodontal disease which may lead to loss of bone and falling out of teeth.

Synonym of periodontal