People have a total of 4 wisdom teeth, but in some people they do not erupt, so it is normal to have 0 to 4 wisdom teeth. Wisdom teeth are the third molar in human beings and usually erupt between the ages of 16 and 35. With the progress of human beings, food becomes more and more delicate, the size of the lower jaw becomes smaller, and there is almost no room for wisdom teeth to grow in the jawbone, so some people do not grow wisdom teeth, and some people grow 2, 3, or 4. Therefore, the number of wisdom teeth between 0 and 4 is normal within this range. Wisdom teeth are located at the back and are not easy to clean, so it is important to brush your teeth carefully and maintain good oral hygiene after wisdom teeth grow in. If the wisdom teeth have recurring pain, malposition, encroachment on neighboring teeth, or decay, it is recommended to actively seek medical attention for extraction.