In modern surgery, “minimally invasive” has become one of the most popular topics. In the 1980s, the concept of “minimally invasive surgery” emerged in the surgical community. In 1985, Dr. Payne SR first introduced the concept of “minimally invasive” in his article on the treatment of urinary tract stones. In the following two decades, minimally invasive surgery has become the main theme of surgical development and has gradually developed into minimally invasive medicine. The application of minimally invasive technology not only reduces the trauma of patients, facilitates the recovery of diseases, shortens the treatment period and reduces the treatment cost, but also effectively eliminates or reduces the psychological shadow and trauma caused by traditional surgery. Minimally invasive techniques are gradually applied to all fields of dentistry, especially oral and maxillofacial surgery. Most patients’ contact with oral and maxillofacial surgery starts with tooth extraction. When it comes to tooth extraction, the first thing that comes to mind is the unbearable pain and then the creepy “clanking” sound of hammering. Indeed, many people have a “dental phobia”, especially the fear of tooth extraction. In national surveys, the incidence of dental phobia ranges from 40-70 percent. This is inseparable from the traditional method of tooth extraction. In order to remove the residual root from the alveolar bone, a hammer is used to wedge the tooth between the tooth and the bone, and then the root is loosened by the prying force of the lever, and then extracted with a dental pliers; if the “wisdom tooth” is extracted, a chisel is used to remove part of the bone, or the tooth is then split and chiseled. Although this process is made possible by the effect of anesthesia, it inevitably causes pain and swelling afterwards, and various complications such as root displacement and temporomandibular joint injury are also related to these operations. The emergence of minimally invasive extraction technology can be said to be an inevitable result of social progress and development. Minimally invasive extraction is not only a great progress in technology, but also a reflection of the modern medical concept of humanistic care and “patient-centeredness” in tooth extraction. By “minimally invasive”, it not only refers to the minimal trauma caused by tooth extraction, but also refers to the use of psychological suggestion, comfort and sedative drugs by the physician to relieve mental tension and fear, so that there is neither physiological malignant stimulation nor mental fear. Minimally invasive extraction not only has high requirements on the extraction instruments, but also has high requirements on the physician’s technique and even humanistic spirit. First of all, let’s talk about the instruments for minimally invasive extraction. 1. Minimally invasive extraction forceps and extraction jaws (knife): Minimally invasive extraction forceps and jaws are developed on the basis of traditional extraction forceps and jaws. Minimally invasive extraction forceps have a thinner beak, which makes it easier to clamp the roots of teeth. The minimally invasive extraction jaw, also called minimally invasive extraction knife, is actually a combination of the traditional extraction jaw and the Emei chisel: its blade is sharper than the traditional jaw, and it has an extra forceful handle than the Emei chisel. Its sharp working end can enter between the tooth and the alveolar bone, cut the periodontal membrane between them and compress the alveolar bone without using the traditional prying force, and with the minimally invasive dental forceps, the tooth is extracted with minimal damage to the periodontal tissue. 2. 45° elevation angle impacted pneumatic handpiece and shell special cutting drill: The use of high-speed turbine drill to remove bone and cut dental tissue has been more widely used in the extraction of “wisdom teeth”. This special instrument can reduce the complications of subcutaneous emphysema that can easily occur with high-speed turbine drills. It is used for bone removal, dentin cutting and root separation. It has the advantages of fast speed, low vibration and accurate cutting. 3.Ultrasonic bone knife: This is a bone surgery equipment that can achieve precise bone cutting. It has advantages over high-speed turbine drills or pneumatic handpieces: no side vibration to protect soft tissues; low-temperature cutting without osteonecrosis. If it can improve the cutting speed and reduce the cost of instruments, it will become an ideal instrument for minimally invasive extraction. 4. Special instruments for root extraction: These instruments include supporting root canal screws and wrenches or power systems, which work by first preparing the root canal, then screwing the screw into the root canal and using the adjacent tooth as a pivot point to extract the root. This method is complicated and the instruments are expensive and should not be promoted. In addition, using the neighboring teeth as the fulcrum, there is a possibility of damaging the neighboring teeth, and at present, there is not much clinical experience in using it. 5.Water laser: It is the use of laser energy to excite the high-speed jet of atomized water particles, so that they absorb the laser energy, thus removing the tissue quickly and cleanly. It does not produce heat, does not shock, and is the ideal tool for cutting bone. However, only a few cases of bone tissue removal have been reported. The use of minimally invasive extraction instruments and the promotion of the technique have made it possible to gradually leave the era of “slash and burn” for tooth extraction. The extraction process no longer requires violence, which reduces soft tissue damage; the precise removal of bone resistance and tooth cutting reduces hard tissue damage, which makes the postoperative pain much less, and the absence of “clanging and banging” also reduces the psychological fear of patients, especially children, women and the elderly are more receptive. Moreover, this “non-violent” extraction also greatly reduces the complications of traditional extraction, such as tooth displacement into the maxillary sinus, parapharyngeal space or even fracture. The most common post-extraction swelling, pain and bleeding are significantly reduced, as summarized by each hospital. With the progress of society and humanistic care, painless and minimally invasive extractions under sedation are gradually promoted. The promotion and use of laughing gas inhalation sedation, painless anesthesia injectors, and minimally invasive extraction systems have made tooth extraction less intimidating. You should no longer hear the familiar “clanking” and occasional screams when you enter a modern surgical office.