Tooth pain both hot and cold is usually caused by tooth sensitivity, dental disease, periodontal disease, endodontic disease or some medical injury, may cause teeth to be more sensitive to hot and cold stimuli and pain. It is recommended to go to the hospital, take a film to clarify the cause, clinical treatment is based on the cause of tooth sensitivity, according to the cause of treatment: 1, dental disease: such as dental caries, wedge-shaped defect, tooth fracture, etc., resulting in the destruction of tooth enamel or tooth bone, resulting in tooth sensitivity pain, can be dealt with through decay, filling, restoration treatment, etc., deeper caries also need to carry out root canal treatment, can improve the tooth sensitivity pain 2, periodontal disease: periodontitis, periodontal abscess and gingivitis and other periodontal diseases caused by sensitivity, usually need to scaling or gingival root scraping, and keep the mouth clean, can be treated by containing chlorhexidine solution or oral metronidazole and other antibiotics, if the abscess has formed, also need to incision and drainage; 3, endodontic disease: pulpitis, pulp necrosis or pulp degeneration caused by tooth sensitivity, generally need to be treated by Because the tooth is more fragile after root canal treatment, it is recommended to wear a crown after root canal treatment; 4, medical source damage: ultrasonic cleaning or dental treatment may lead to dentin exposure, the phenomenon of hot and cold pain, you can use anti-sensitive toothpaste, correct brushing, and eat less hot and sour food to relieve the symptoms, in serious cases, fluoride drugs can be used for local application to desensitize Treatment.