Wisdom teeth do not have a special significance, that is, the growth of a normal tooth, only relative to the eruption time of this tooth is slightly special, most people in the age of 18-22 years old, wisdom teeth began to erupt, just in the stage of maturity of the human mind, so also known as wisdom teeth, wisdom teeth. It is just the relationship between the growing teeth and the age node, just as growing six-year-old teeth means that the child is going to elementary school at the age of six, it is a relative relationship. Because many people now have less space in their jaws, wisdom teeth can not erupt, so often lead to ectopic eruption of wisdom teeth, this kind of wisdom teeth are particularly easy to form wisdom teeth pericoronitis, causing pain, this kind of wisdom teeth need to be extracted.