Toothaches are caused by oral diseases. The danger of a toothache itself is limited to affecting the patient’s daily life, causing difficulty in eating or sleeping, etc. However, the disease that causes the toothache may cause serious harm to the body. Toothache can be caused by a variety of diseases, such as dental caries, pulpitis, periodontal disease, etc., due to the disease will lead to patients chewing is affected. Acute pulpitis can also cause pain at night, affecting the patient’s rest. In addition, toothache can also be an involved pain originating from systemic systemic diseases, such as angina and thyroiditis. Diseases that cause toothache can lead to multiple hazards, the most typical hazards such as purulent pulpitis if not treated in time, there can be inflammation to the surrounding spread, resulting in inflammation of the jawbone and so on. If bacteria enter the bloodstream to form septicemia, there will be a systemic inflammatory response, or the formation of bacterial endocarditis. When the toothache symptoms continue to be unrelieved, it is recommended to consult a doctor in time to avoid delaying the condition.