When it comes to tooth extraction, I believe no one is unfamiliar with it. Teeth are an organ in our mouth, and for one reason or another, many affected teeth that have no retention value end up being treated by extraction, so the reality is that most adults have had one or more teeth extracted. Did these experiences of tooth extraction leave you with a little memory of fear? Many patients suffer from wisdom tooth inflammation, but because they do not know about wisdom tooth extraction, they do not dare to go into the hospital for treatment or dare to come to the hospital to have their teeth extracted. In fact, many patients do not have the experience of wisdom tooth extraction, and the feeling of “the end of the tooth extraction is painful” is only hearsay. Wisdom teeth, the scientific name of the third molar, commonly known as wisdom teeth, we Yuxi people call it “the end of the tooth”, is the tooth closest to the throat, if all grow out a total of four, one at the end of the upper and lower left and right teeth, usually grow out at the age of 16 or later, compared to the early childhood growth of milk teeth and the replacement of permanent teeth in childhood The wisdom teeth usually emerge when the human mind is already mature, hence the name. In fact, from the point of view of modern medicine, wisdom teeth are a natural part of human evolution. As we all know, “the use of the waste of retreat” is a universal law in biological evolution, wisdom teeth is a very good example. In ancient times, human beings survived by eating rough wild plants and animal flesh, so they needed to have 32 teeth and a large jawbone. Later, after millions of years of evolution, with the evolution of biology and social progress, human food has become more and more refined, human teeth have become round and blunt, and the jawbone has receded and become smaller. Since wisdom teeth begin to grow several years after the eruption of 28 teeth, their position is often occupied by teeth that have already erupted, thus making their eruption difficult and causing obstruction such as abnormal degree and position of wisdom teeth eruption. Wisdom tooth eruption is often painful, and some blocked teeth are covered with gum tissue, forming a blind pocket, which is prone to retain food residue, and if not cleaned properly, it can easily cause infection, local redness and inflammation, and the blind pocket overflows with pus, which is medically called pericoronitis. In mild cases, the pericoronal area is red and swollen, painful, and in severe cases, localized pus, restricted mouth opening, maxillofacial swelling, generalized fever, and even complications of jaw bone osteomyelitis. In addition, there is often food embedding between the wisdom tooth and the second permanent molar, which indirectly causes caries of the second permanent molar. Orthodontic patients can also be affected by the eruption of wisdom teeth. The wisdom teeth have so many disadvantages, but its bite function is very small, so it is necessary to remove the wisdom teeth. So, do all wisdom teeth need to be extracted? Generally speaking, the following types of wisdom teeth need to be extracted: 1. Buccal oriented wisdom teeth that have no chewing function and often bite through the buccal mucosa may become focal teeth that lead to buccal mucosal rupture, infection, erosion, or even pre-cancerous lesions, and should be extracted early. 2.Low vertical wisdom teeth with frequent acute and chronic pericoronitis have become focal teeth that affect health and should be extracted. Although there is no symptom at the moment, the presence of the wisdom tooth can cause cavity in the cervical part of the distal and middle adjacent teeth of the second molar. In order to protect the second molar which has important chewing function, it is recommended to extract this kind of obstructive wisdom teeth at an early stage. In addition, wisdom teeth with normal tooth position and chewing function; or wisdom teeth with obstructed and no chewing function, but no discomfort, inflammation, caries and other complications; or wisdom teeth that can be used as abutment teeth for prosthetic (denture) restoration, should be retained. The growth position of wisdom teeth determines the difficulty of their extraction, and the traditional wisdom teeth extraction is not small in terms of trauma and risk. The patients are reluctant to have their teeth extracted and share this “experience” with more patients, resulting in many patients being afraid to have their teeth extracted. Nowadays, a new type of tooth extraction is becoming popular – minimally invasive tooth extraction. Minimally invasive tooth extraction refers to the use of special minimally invasive extraction instruments and turbo power cutting, which avoids the pain and psychological fear caused by the traditional method of jerking and knocking tooth extraction, and the patient’s tooth extraction is less invasive, shorter and less complicated. Minimally invasive extraction instruments have a unique shape and specially designed sharp working end, which can very easily enter between the root and the alveolar bone, cut the periodontium and gently extract the tooth. The advantages of minimally invasive tooth extraction are: 1. Less pain and less psychological impact: painless minimally invasive tooth extraction 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 more psychological impact than traditional tooth extraction. 2. Small trauma and fast 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 and make it easy to extract. The wound is less traumatic, 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: A large amount of alveolar bone removal is avoided, and postoperative complications of tooth extraction such as bleeding, swelling, pain, nerve damage, infection, mouth opening restriction and temporomandibular joint damage are significantly reduced.