The fear of extraction of obstructed teeth makes many patients doubtful about the extraction process and the corresponding method. At present, many hospitals have adopted the microdynamic system extraction method, which has allowed the extraction time of such complex teeth to be greatly reduced. The minimally invasive method assisted by the implant machine system used in our hospital has minimized the trauma of tooth extraction and improved the efficiency of the procedure. However, not all patients are able to complete the procedure in ten minutes. The morphological variation of blocked teeth is large, and when a few complicated cases are encountered such as malformed curved roots, hypertrophic roots, root-bone adhesions, and overly buried deep teeth, the time required for surgery is more than 30 minutes or even longer. Some patients ask me how long the surgery must take to complete. What we hope patients can understand is that there is a difference in difficulty in everything, and extraction of obstructed teeth is a delicate surgical procedure that cannot be measured by analogy in the form of a sprint race for time. It is the goal of the surgeon to remove the tooth with the smallest incision and the least possible trauma. So please understand and cooperate with the surgeon when your tooth condition is complicated and the surgery takes longer. Li Hao, Department of Maxillofacial Surgery, Peking University Stomatological Hospital No. 4 Clinic Regarding the postoperative reaction after tooth extraction, under the premise of minimally invasive tooth extraction, I would like to summarize it in eight words: it varies from person to person and from tooth to tooth! With the same surgeon and the same surgical method, different patients have very different reactions. Some people feel no pain or swelling, others feel mild swelling and pain, and a few patients react violently and severely. Generally speaking, young women react more severely than middle-aged men after surgery. Also, the same patient generally reacts differently after having both sides of the wisdom tooth extracted separately. For example, it is very common for many people to say that one side does not hurt after surgery and the other side hurts after surgery. However, when your tooth belongs to the ones I mentioned above (malformed curved roots, hypertrophic roots, root-bone adhesions, excessively buried deep teeth, and a few other complicated cases), the surgery will take a long time, and even if the trauma is small, the postoperative reaction will generally be very serious, with almost 100% incidence of swelling and pain, as well as limited mouth opening and fever. The possible reactions will be explained by the surgeon after the surgery and will be dealt with by appropriate anti-inflammatory and pain-relieving methods, so the patient should not worry too much. The doctor cannot promise the patient no pain or swelling after the surgery, but the doctor can do the most minimally invasive way to remove the tooth. I hope patients reading this will have a better understanding of tooth extraction!