The minimally invasive extraction technique uses a special extended high speed impact pneumatic dental drill to divide the crown of the tooth, and then a minimally invasive extraction instrument is inserted between the periodontium and the alveolar bone to separate it, allowing the tooth to be fully loosened and easily removed without damaging other tissues around the tooth. The use of minimally invasive instruments does not require hammering to increase the gap, and the force applied does not use the levering force of prying, which avoids the corresponding adverse reactions such as gum tearing and adjacent tooth damage caused by levering force, and is a revolutionary innovation in tooth extraction technology. Due to the thin and sharp instruments of minimally invasive extraction, the periodontal membrane can be cut quickly and accurately, and the integrity of the alveolar bone can be protected, resulting in less surgical damage, less postoperative pain, and faster healing of the wound than after traditional extraction. Painless minimally invasive tooth extraction has obvious advantages over traditional tooth extraction techniques. 1. Less pain: There is almost no obvious pain during painless minimally invasive tooth extraction, which is easily accepted by the general population. 2. Short time: Since the use of high-speed turbo drill can accurately remove bone, the time of bone removal with bone chisel is avoided, the surgical field is clear, and the operation time is significantly shortened, and the extraction time is generally only about 1/3 of the traditional extraction time. 3. Less trauma: The instruments used are all fine instruments, and the operation is accurate, which can minimize the patient’s injury. Due to the strong cutting ability of high-speed impact pneumatic drill, the bone can be removed accurately according to the need and the tooth can be divided in various parts of the tooth, which makes the extraction easy and the local damage is small, and the local swelling and pain are obviously reduced after the operation. 4. Less complications: avoiding the removal of a large amount of alveolar bone, the complications of tooth extraction such as bleeding, swelling, pain, nerve damage, infection, mouth opening restriction and temporomandibular joint damage are significantly reduced after painless minimally invasive tooth extraction. 5. Less psychological impact: Since chisels and hammers are not used during the whole procedure, there are less rough knocking and chiseling and other scary actions than traditional tooth extraction, which will not make patients, especially children and elderly, feel fearful, as well as less complications, making the psychological impact of the procedure on patients much less than traditional tooth extraction. 6. Fast healing of the wound: Due to the use of fine instruments, the wound is less traumatic and the chance of infection is greatly reduced, the postoperative pain is lighter and the wound heals faster.