Tooth a touch pain bite severe pain, may be deep caries, acute periapical periodontitis, tooth fracture, etc., according to the specific circumstances of the choice of filling and restoration, root canal treatment, loose teeth fixed, extraction and other treatment measures. 1. Deep caries: deep caries when tooth decay reaches the deep dentin layer, more sensitive, firstly, clean up the decayed tooth tissue, and then fill and repair to restore the shape and function of the tooth. 2. Acute periapical inflammation: when acute periapical inflammation forms a periapical abscess, there will be pain when the tooth is touched and severe pain when biting, then it is best to open the pulp and drain in time, if the pain is serious, you can take ibuprofen slow-release capsules orally, and wait until the pain is relieved to carry out endodontic treatment; if the tooth is not very meaningful to keep, it can be extracted. 3. Fracture: If the tooth is fractured by trauma, biting hard objects, etc., the tooth will hurt when touched and the bite will be painful. If it is a crown root fracture, first root canal treatment, and then choose to pile crown repair; if it is a root fracture, first splinting, the effect is not good can be selected according to the specific circumstances of the tooth extraction. Teeth hurt when you touch the bite, it is best to go to the hospital in time, after a professional physician’s examination, to clarify the causes of toothache, and then symptomatic treatment is better.