請大家加強宣導播放
https://www.youtube.com/watch?v=827iNXnQtf0&t=46s----牙齒影片連結
https://www.youtube.com/watch?v=x2W2YAEVtiM--321法則
https://www.youtube.com/watch?v=Xc-85WX32b0---貝氏潔牙法
