Minimally invasive tooth extraction is mainly the use of specialized instruments for tooth extraction, and the difference between traditional tooth extraction, mainly in the extraction instruments, methods, postoperative trauma level is different.1, extraction instruments: traditional tooth extraction using a dental tappet, bone chisel or dental pliers. Minimally invasive tooth extraction uses specialized minimally invasive tooth extraction instruments, such as traction extractor, minimally invasive tooth extractor with the original tooth extractor as a prototype to be improved, etc.; 2, extraction method: minimally invasive tooth extraction operation is more stringent than the traditional extraction of the technical requirements. Due to the different extraction instruments, there are differences in the operation of the extraction process, such as traction extractor using the process of periodontal membrane stripping knife, as far as possible to fully strip the periodontal fibers, and then the bolts into the root canal, the use of pulley puller to pull out the root. The minimally invasive tappet is used to cut the periodontal membrane around the root in different directions by selecting one or a series of tappets according to the actual condition of the root. Traditional tooth extraction is to use dental tines to loosen the tooth, and then place the dental pliers on the labiolingual or buccolingual side to shake repeatedly, so that the tooth is loosened, and then pulled from the labial and buccal sides to remove the tooth; 3, postoperative trauma: traditional extraction of teeth to remove the bone, the use of hammers or bone chisels, easy to cause joints or local tissue injuries. Minimally invasive tooth extraction to avoid the use of large flap, grinding bone and other operations, the alveolar bone damage is relatively small, can effectively reduce postoperative swelling, pain and other reactions, postoperative recovery is also faster, can be targeted to remove difficult to extract the teeth, blocked wisdom teeth or ambulant teeth, but minimally invasive extraction of the doctor’s technical requirements are higher.