noun🔗Share牙周病学 The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal ligament—and diseases and conditions that affect them."My dentist recommended I see a specialist in periodontics because my gums were bleeding. "我的牙医建议我去看牙周病学专家，因为我的牙龈出血了。medicineanatomybodydiseaseChat with AIVocabulary GamePractice Reading
