In clinical work, after the extraction of teeth for patients often use sutures to close the wound, many patients will be slightly fearful and questioning tone asked: “Doctor, after the extraction of teeth still need stitches? Does it hurt?” Some uninformed patients may think that the doctor made a mistake during the extraction process and then gave them stitches, thinking that medical malpractice had occurred, leaving a lingering psychological shadow and asking questions. Below is a more in-depth explanation of why stitches are necessary in some cases after tooth extraction. As part of the tooth is in the bone, after extraction, the alveolar bone will leave a “hole”, different positions and different sizes of teeth are removed, leaving different “holes”. God created man with a very strong self-repair ability, in the “hole” appeared at the moment, he began to start the repair process, this program is complex, but also the Creator gave each individual magical ability. First, it forms a blood clot through bleeding to temporarily fill the hole, and then the blood clot begins to mechanize, and a variety of mesh structures begin to intertwine to protect the wound, and gradually the wound completes ossification, and ultimately fills out the “hole” and completes the self-repair. If you pay attention to my last popularization article, you may still remember the analogy that when a tooth is opened, it needs to be repaired, and the repair process may be invaded by foreign enemies, so this process is not only the process of self-repair, but also the process of protecting other parts of the body from being affected. Simply summarize the change of blood clots in this hole into three processes: liquid – semi-solid – solid. This process cannot be interrupted or delayed or the process will become long and painful, and once it is interrupted, it must start from the beginning. The transition from liquid to semi-solid generally takes 3 – 7 days, and this process is the most susceptible to external interference. Because of this, in some extraction sockets with large wounds, loose surrounding structures, and not easily stabilized with blood clots, the surgeon chooses to use stitches – to -Artificially create a favorable transition environment so that the process can be transitioned faster and better. To put it bluntly, many of the adverse effects of tooth extraction are due to the fact that the process has not been properly transitioned. Therefore, sewing stitches into extraction sockets, which are most commonly used in the extraction of retained teeth, complex molar extractions, and multiple consecutive tooth extractions, can effectively minimize all possible complications after tooth extraction, and is a very beneficial operation for the patient, so that the fear of a medical error is completely superfluous.