Another tooth grows behind the tooth, which may be a supernumerary tooth or a wisdom tooth. 1. Multiple teeth: Multiple teeth have a certain heredity, is from the adjacent permanent tooth buds of the plate differentiated from the development of the third tooth buds, can occur in any tooth position, the growth of the teeth will have a certain impact, but also may lead to oral diseases, need to be removed as soon as possible, supplemented by orthodontic assistance if necessary. 2. Wisdom teeth: Wisdom teeth are the third permanent molars of human beings, usually erupting between the ages of 16 and 25, located at the end of the tooth row, the innermost part of the mouth. The eruption of wisdom teeth is a normal physiological phenomenon, not a disease, but wisdom teeth are not too helpful for chewing function, and very easy to cause wisdom teeth pericoronitis. If inflammation occurs frequently, or if wisdom teeth are blocked, they should be removed as soon as possible. If you find that another tooth is growing behind your teeth, we recommend that you go to a dental clinic and follow the doctor’s instructions.