Generally through brushing can only clean the exposed parts of the teeth, on some hidden parts, such as two teeth in contact with the place, the bristles of the toothbrush can not be very good into, even if we are very carefully brushing, but also can not clean these parts, resulting in these parts become a hygiene “dead zone”; Some people eat or food easily plugged teeth. At this point, the use of tools such as toothpicks and dental floss is necessary. They can be used to remove food from between the teeth, as well as plaque and tartar, especially on neighboring surfaces. The key to these beneficial tools is to choose and use them correctly, and they can be used as a supplement to daily brushing in order to fulfill their role in favor of dental health.