A suction tube is a medical device that is often used during oral treatments. During dental cleanings, periodontal treatments, and other procedures, doctors need to use a suction tube to remove water spray, debris, blood, and saliva from the mouth. The use of a suction tube prevents these liquids and impurities from entering the patient's respiratory tract or being swallowed into the stomach, keeps the mouth clean and dry, and helps the doctor perform better.