Wisdom teeth refer to the third molar. If you count from the center to the sides, the eighth tooth is the wisdom tooth. The third molar is not visible until the age of 16 or even later, and it is generally believed that at this time a person’s intellect is basically fully developed, so the third molar is also known as the “wisdom tooth”. There are many variations in the eruption of the third molar: some, or even all, of the third molar is embedded in soft tissue or in the jawbone due to insufficient bone in the jawbone, i.e., an impediment to eruption; and some third molar is congenitally missing due to hereditary factors. For wisdom teeth that grow vertically and can erupt normally, we can wait until they erupt before deciding whether to remove them, and those that can bite normally can be retained, but we need to maintain oral hygiene to prevent wisdom teeth from decaying. Wisdom teeth that are tilted towards the buccal or lingual side are recommended to be extracted as they cannot be chewed normally. For wisdom teeth that grow at an incline and cannot erupt normally, the trauma of extraction and the hazards of wisdom teeth should be evaluated, such as eruption that may lead to plugging leading to caries of the wisdom teeth and the front teeth, and under-eruption leading to pericoronitis of the wisdom teeth, etc., and the wisdom teeth should be extracted as early as possible. Wisdom teeth often belong to the state of blocked, once found blocked wisdom teeth to be extracted as soon as possible, otherwise because of the wisdom teeth are very easy to cause caries of the front teeth, periodontitis and even loosening and fall off and so on. It is recommended to go to the hospital for regular oral checkups, which can be enough to prevent the occurrence of more oral diseases.