Many people think that teeth are close to the brain, and they are worried that tooth extraction will affect the nerves of the brain. This is also the reason why many people are unwilling to pull out rotten teeth and cavities. So will tooth extraction affect the nerves? According to experts in the new era, there are many adverse consequences of nerve damage caused by tooth extraction. If you pull it out casually, it is likely to hurt the periodontal nerve around the root, which is connected with the facial nerve. If the tooth is extracted too hard, it is likely to cause facial muscle necrosis and even facial paralysis. Some concrete effects are mainly shown in the following aspects: 1. Pregnant women and menstrual women will stimulate the brain during pregnancy or menstrual period, and the stimulation of brain nerves to other tissues and organs will be abnormal, leading to abortion or premature delivery and more bleeding. 2. Diabetic patients are prone to wound infection when tooth extraction, and diabetes will be aggravated when the infection is aggravated. Because, after tooth extraction, the tooth nerve is exposed and easily infected by external bacteria, and the brain is stimulated by the tooth nerve, which will aggravate the condition of diabetes. 3, patients with liver cirrhosis, liver function damage, patients with decreased prothrombin in the blood, because after tooth extraction, the root will bleed, the tooth nerve will be pulled out, and the pain will be transmitted to the brain, and then the brain will react, aggravating the blood flow around the affected tooth and increasing bleeding. 4. In patients with renal failure or severe kidney disease, if the tooth is extracted, the tooth nerve of the tooth is pulled out, the periodontal nerve is stimulated, and the stimulated pain is transmitted to the brain, and the brain is transmitted to internal organs and tissues, causing dysfunction of kidney organs and other functions. It can be seen that tooth extraction is not as simple as patients' friends think. If it is not handled well, it will also cause certain harm to the patient's body. If patients want to have their teeth extracted safely and reliably, it is better to go to a regular stomatological hospital. In this case, it can not only ensure the safety of tooth extraction, but also protect the health of patients.