periodontitis
n. [口腔] 牙周炎
例句
Have you ever been treated for gingivitis or periodontitis?
您针对牙龈炎或牙周炎治疗过吗?
Periodontitis: Inflammation of soft tissues around the teeth.
牙周炎:牙齿周围软组织的炎症。
An antibiotic isn't effective for the treatment of periodontitis.
抗生素对于治疗牙周炎并无多大效力。