The causes and treatments of good toothache are mainly as follows: first, it is due to endodontitis, the treatment is to do root canal therapy, remove the infected pulp nerve, rinse and disinfect the root canal, and then fill the root canal tightly to relieve the pain and control the infection; second, it is due to the tooth suffering from periodontitis, when the periodontitis is very serious, there will be a gradual loosening of the teeth, and when biting and eating hard things will cause the Teeth pain, but also to the outside world of cold, hot, sour, sweet stimuli appear sensitive, triggering the phenomenon of tooth pain. For periodontitis patients to do systematic periodontal treatment, mainly including ultrasonic scaling, periodontal scaling, periodontal rinsing and medication, tooth polishing, etc.; third, tooth fracture, tooth fracture to do a specific clinical examination, if the root of the tooth can be retained, you need to carry out the root canal treatment, if the root fracture can only be extracted.