6~12歲 Ages 6-12
口腔清潔篇 ORAL HYGIENE TIPS
牙線棒 Floss stick
2019/09/06
兒童刷牙
牙線棒
選擇合適的牙線棒，以拇指和中指握牙線柄，食指上按住牙線弓。
Choose an appropriate floss stick. Hold the stick handle with your thumb and middle finger and place your index finger on the bow.
