Dental floss is a string-ike device made of coton or other ibers intended to remove plaque and food particles from between the teeth to reducetooth decay. The fibers of the device may be coated with wax for easier use.牙缝清洗用丝线，是线状医疗设备，由棉线或其它的纤维制成，用于祛除牙缝中的噬菌斑和食物碎屑，以减少龋齿。纤维线可能会被涂上蜡以方便使用。
牙缝清洗用丝线，属于牙科医疗设备，出口美国需做FDA注册:
