What kind of damage can tooth extraction cause to the body? Tooth extraction, like other surgical procedures, can cause different degrees of damage not only to local soft tissues, but also to bone tissues, causing reactions such as bleeding, swelling and pain, and can cause different degrees of systemic reactions. In patients with systemic diseases, tooth extraction can have serious consequences for the patient. In addition, tooth extraction can have a significant psychological impact on the patient. Especially in young women, the extraction of teeth is often seen as a detriment to their appearance. The extraction of a tooth, regardless of the reason, can be perceived by the patient as suffering some kind of damage and causing varying degrees of psychological trauma. Some people see tooth extraction as an omen of bad luck. More common is the patient’s fear of tooth extraction and the mental tension that comes with it. In addition, tooth extraction is performed in the presence of saliva and the presence of a large number of microorganisms. It is almost impossible to make a tooth extraction in aseptic conditions and to avoid postoperative contamination. Tooth extraction can cause bacteremia, which can lead to bacterial endocarditis if the patient has rheumatic heart disease, and can be life-threatening. Acute nephritis and thyroid crisis can also be triggered by tooth extraction. When multiple teeth are extracted or the extraction is traumatic, there is a possibility that the systemic disease may be aggravated or exacerbated. Furthermore, tooth extraction can be very harmful to the mouth and face, affecting the aesthetics when the front teeth are extracted and chewing and eating when the back teeth are extracted. After the extraction of one side of the back teeth, often choose the other side of the back teeth to chew things, the long-term side of the chewing side, due to the good movement of chewing muscles and developed, the other side of the muscle atrophy, resulting in facial asymmetry, commonly known as “face bias”, affecting the aesthetics. At the same time, the teeth and gums on the side of long-term eating are clean and healthy because they are often scrubbed and massaged by food, while the side of the extracted tooth is far worse, often with tartar, tartar adhesion, gum redness and bleeding, etc. Also, if the tooth is not set in time after extraction, it will cause the neighboring teeth to shift to the missing gap. At the same time, the opposing teeth in the gap will grow excessively in the direction of the gap. This can cause bite disorder and food impaction. Long-term inlay and occlusion disorder will cause decay of other teeth and periodontal disease. On the other hand, even if the teeth are inserted in time after extraction, it will be harmful to the health to some extent because most of the dentures need to be fixed on the natural teeth, which will bring new damage to the natural teeth by more or less adjusting and grinding. Even if you do not need to use natural teeth and take the dental implant method, you will have to undergo a hole transfer procedure on the alveolar bone during the placement of the implant, which will cause new trauma, and dental implants are expensive. Fake is fake, dentures in the mouth sometimes foreign body feeling is very obvious, of course, eating is not as “friendly” as their own “original teeth”, eating is not as “fragrant” as their own teeth. Ah. Therefore, we should not choose to pull out teeth when we have dental disease hastily! So, what kind of teeth need to be extracted? And what kind of tooth disease can be treated? The indications for tooth extraction are relative. With the development of various dentistry disciplines, many teeth that used to be indications for extraction can now be preserved due to theoretical and technical developments. It is important to emphasize that the responsibility of the dentist is first and foremost to preserve the tooth in order to maximize function and aesthetics. Therefore, extreme caution should be exercised when considering whether or not to extract a tooth. Periodontal disease is a common and frequent disease of the oral cavity and the primary cause of tooth loss in adults. Prevention and early treatment of periodontal disease should be emphasized. 1, the most basic disease of periodontal disease should be plaque, in which bacteria grow, reproduce and metabolize, and the toxins and metabolites produced directly stimulate the gums, forming gingivitis, that is, the early stage of periodontal disease. Therefore, timely removal of dental bacteria class is the most priority task to prevent periodontal disease. (1) Pay attention to oral hygiene and adopt correct brushing methods: Ⅰ Use regular health care toothbrush. ⅡTo brush all sides of the teeth. Ⅲ Brush vertically. Brushing along the teeth can play a massage gums, accelerate local blood circulation to stop and eliminate the role of bacterial contamination. ⅣBrush your teeth in the morning and evening, and rinse your mouth after meals. V use dental floss, toothpicks, interdental brushes to clean the tartar and plaque that cannot be easily removed between teeth. (2) If there are prostheses such as denture, attention should be paid to keep the denture clean, early removal of bad restorations, and timely treatment of gingival margin inflammation can prevent the occurrence of most periodontal diseases. (3) Functional stimulation also plays a very important role in the health of periodontal tissues. Normal chewing has both functional stimulation. (4) Pay attention to dietary regulation and adequate nutrition. (5) Adopt a healthy lifestyle. (2) Regular oral examination, regular X-ray examination, dental cleaning at the hospital, removal of tartar, tartar, local medication, morning and evening light salt water rinse. Perform treatment of early periodontal damage and eliminate periodontal pockets. Treatment of other oral lesions related to periodontal disease, 3, medium or even advanced periodontal disease, such as loose teeth can be fixed with orthopedic restoration, can still be considered to retain. 4.Restore the lost alveolar ridge and lost teeth, improve the aesthetics and function. Caries is also a common disease in the oral cavity, even if there is extensive caries, if the root and periapical condition is good, the root can be preserved and restored with pile crown after root canal treatment, or make overdenture, the root preservation is good for keeping the height and fullness of the tooth bed, and is good for the retention of the denture. Many periapical diseases can be cured by root canal treatment, and even if they cannot be cured, they can be preserved by root resection and reverse pulp surgery or tooth replantation, so they should be judged carefully. In addition, cryptoconjugated teeth, longitudinal root fractures and transverse fractures of molar roots with traumatic dentition, trauma to teeth, resorption of teeth within the teeth, buried and blocked teeth, extra teeth and misaligned teeth, fused teeth and duplex teeth, retained milk teeth, teeth involved in jaw fractures, etc. The above-mentioned cases include most of the indications for tooth extraction, and if we summarize them, we can say that the indications are relative, and the responsibility of the dentist is to do everything possible to preserve the natural teeth without not to extract them. The responsibility of the dentist is to preserve as much natural tooth tissue as possible, or as much as possible.