It is possible to grow teeth as an adult, often called wisdom teeth, which typically erupt between the ages of 18 and 25. Adult teeth are permanent teeth, 28 in total, 14 in the upper and lower jaws, and usually come out completely around age 14. Generally, permanent teeth do not erupt in adulthood, but wisdom teeth can erupt between the ages of 18 and 25, and in some people, 4 wisdom teeth can erupt completely, or only 1 to 3. Wisdom teeth are the third molar in humans and are part of the human mouth. If wisdom teeth are in the right position, they can help to exercise the function of chewing; if they are not in the right position or cannot erupt completely, they can cause recurrent inflammation, pain and other manifestations, affecting the quality of life, and need to be extracted. Therefore, adults can grow teeth. Oral hygiene should be paid attention to in normal times and regular oral examination should be carried out.