Explore the micro-world within the mouth，safeguard the overall health of the body.

Oral health, which seems to be confined to the oral cavity, is actually closely related to our overall health. Good oral health can significantly improve the quality of our daily life. Protecting oral health is protecting our overall health. March 20th is World Oral Health Day, and this year's theme is "Oral Health, Overall Health". As World Oral Health Day approaches, let's invite Dr. Yan Xing and Dr. Zhang Hexuan in the Department of Stomatology at Beijing Friendship Hospital, to talk to us about the prevention and treatment of common oral diseases, the relationship between oral health and overall health, and how to maintain good oral hygiene.