The growth of a small tooth behind an adult’s back teeth may be caused by the growth of wisdom teeth, it is best to go to the hospital stomatology department to take a panoramic film examination to confirm the diagnosis. Adults with small teeth behind the back of the alveolar teeth is generally due to the eruption of wisdom teeth, clinically known as the third molar, is the most backward position of a tooth in the oral cavity, usually erupted in adulthood at the age of 20 years or so, but the time of the eruption of a certain degree of variability, mainly due to the existence of variability in the growth of the wisdom teeth, there may be a blocked state. Adults with wisdom teeth, if there are problems such as swollen gums and pain and wisdom teeth obstruction, you need to go to the hospital stomatology department in time to take a panoramic film to check the growth status of the wisdom teeth, and after the dentist’s judgment, you need to consider the early removal of the wisdom teeth, to prevent the wisdom teeth from recurring pericoronitis and other uncomfortable symptoms, which affects the oral health.