There are several aspects of tooth extraction that do not hurt: 1. The trauma of tooth extraction is not very big, such as the front teeth or the milk teeth when the milk teeth alternate, the trauma of tooth extraction itself is very small, and after the extraction, because the anesthetic will continue to work for a period of time, usually for more than one hour, the patients themselves do not feel pain during this time. The pain is not felt during the whole process. 2. The pain tolerance of each person is not the same, some feel very painful while others may not be very obvious, so pain is a different concept for different people.