End teeth refer to the 3rd molar, which is also called wisdom teeth in medicine. Wisdom teeth do not always need to be extracted, but mainly need to take surface tomography films to observe the direction and position of wisdom teeth eruption and the occlusal situation of the opposite jaw. If there is enough bone in the mouth and the wisdom teeth are erupting normally, and the wisdom teeth in the opposite jaw are in the correct occlusal relationship, you can consider retaining the wisdom teeth. However, in most people, due to the lack of development of the mandible and maxilla, the wisdom teeth cause buried or even horizontal growth, frequent inflammation or caries caused by the front teeth should be considered for extraction, especially for women preparing for pregnancy, it is important to remove the wisdom teeth in a timely manner, to avoid inflammation of the wisdom teeth caused by the low resistance during pregnancy, and there is no way to deal with it.