Tooth leakage nerve regardless of it, there is still a small possibility of life-threatening, tooth leakage nerve bacteria can enter the pulp cavity through the exposed area, resulting in infection, which in turn can lead to apical periapical inflammation, if you still do not care about it, the serious may lead to inflammation to continue to develop and lead to the oral cavity cellulitis, resulting in the infection of the whole body to spread the formation of sepsis, which can be a life-threatening condition. Nerve leakage may be due to dental caries or trauma, after the tooth leakage, bacteria can invade the pulp cavity through the tooth surface defects, resulting in infection of the pulp cavity, pulpitis; pulpitis continues to develop, bacteria through the apical foramen into the apical periapical tissues, which can result in periapical inflammation. If this is still not treated, periapical inflammation continues to develop, can lead to the destruction of the alveolar bone around the root tip, and further lead to oral cellulitis, the patient’s bilateral submandibular and sub-chin area soft tissue extensive redness, swelling and congestion, the patient may also have pain in swallowing, dyspnea and other symptoms, the severity of which can lead to asphyxiation. If septicemia is formed, it may be life-threatening in severe cases. Although it is extremely rare for a leaking nerve in a tooth to produce life-threatening consequences if left untreated. However, the progression of the disease will bring a series of harms and treatment will be more difficult. Therefore, it is recommended that you seek medical attention as soon as possible and follow your doctor’s instructions.