Each tooth is divided into five parts: crown, root and neck. Brushing can only brush three sides, two sides are difficult to brush clean, can be removed with dental floss. How to use dental floss correctly: Floss about 45 cm
How to Buy a Dental Floss (Water Floss)? What Dental Floss (Water Floss) is Worth Buying? What Brand of Teeth Floss is Good?
Just as it is known that a high-pressure water gun can be used to easily clean a car, etc., a proper pressure water flow has long been proven to effectively clean people's teeth and mouth. The cleaning effect of the