牙周病是一種慢性疾病，起初會出現牙肉腫痛、牙齦出血、口臭等問題。如果沒有儘早治療，牙周病會導致牙齒鬆動，甚至牙齒脫落。
Periodontitis is a chronic disease. It starts from gum swelling, gum bleeding, and bad breath. If there is no timely intervention, periodontitis will eventually cause mobile teeth and fall out of teeth.
