The new technology of minimally invasive extraction refers to the use of special minimally invasive extraction instruments and turbo-powered cutting, which avoids the pain and psychological fear caused to patients by the traditional method of jerking and knocking extraction, and patients have small extraction incisions, short time and few complications. Minimally invasive extraction instruments with unique shape and specially designed sharp working end can enter between the root and alveolar bone very easily, cut the periodontal membrane and gently extract the tooth. The advantages of painless minimally invasive tooth extraction surgery by Wang Zhaoliang of the Department of Stomatology of Jinan Military General Hospital: 1. Less pain and less psychological impact: painless minimally invasive tooth extraction surgery is not obvious and easy to accept. At the same time, the surgical procedure does not use chisels and hammers, avoiding such scary movements as knocking and chiseling, which will not make patients feel fearful and have a psychological impact than traditional tooth extraction. 2. Less trauma and faster healing: The instruments used are fine instruments, which can be operated accurately and combined with high-speed turbo drill cutting, which can accurately debone and divide the teeth, making it easy to extract. The wound trauma is small, the chance of infection is greatly reduced, the postoperative pain is lighter and the wound heals faster. 3. Short time: High-speed turbo drill can accurately debride the bone, the time is shorter than that of bone chisel debridement, the surgical field is clear, and the extraction time is mostly only about 1/3 of the traditional extraction time. 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.