Deficiency fire, generally refers to the pathology of a deficiency of yin that leads to an abundance of fire. Dental pain caused by deficiency fire usually manifests as hidden tooth pain, loose teeth, etc., which varies from person to person. Common causes of deficiency fire include congenital deficiency, prolonged illness, overwork, excessive sexual intercourse, excessive thinking, and damage to yin fluid caused by external heat. Toothache caused by deficiency fire is often manifested as hidden toothache, loose teeth, etc., and may also appear in the body heat, five heart heat (two hearts of the hands and two hearts of the feet hot, and conscious of the heart and chest hot), night sweating (abnormal sweating after going to sleep, waking up sweating to stop), emaciation, dry mouth and throat and other symptoms. Men may have spermatorrhea, easy erection, hypersexuality and other symptoms, and women may have dream sex and other symptoms. When the above symptoms occur, you should consult a doctor in time and standardize the treatment under the guidance of a physician, so as to avoid delaying the condition.