常見例句Has a dentist ever told you that you have gingivitis or periodontitis?有毉生告訴過您，您有牙齦炎或者牙周炎嗎？Chronic infections, such as periodontitis, can play a direct or indirect role, they wrote.他們?cè)谖恼轮袑懙?，慢性感染，例如牙周炎，在發(fā)病過程中起到了一個(gè)直接或間接的作用。 返回 periodontitis