Toothache is a common symptom of stomatological diseases, and the toothache caused by dental diseases are as follows: 1. Generally, there is no spontaneous pain, and the pain is felt only when encountering cold, hot, sour or sweet stimulation. It is recommended to consult a doctor for filling as soon as possible. It is a common misconception that a small hole will be fine without looking at it, but in fact, tooth decay will develop quickly to pulpitis if it is not looked at. 2.Acute pulpitis, i.e. dental neuralgia. The pain is spontaneous, aggravated when encountering hot and cold stimulation and accompanied by headache and ear pain, etc. Most of them also have the history of increasing pain at night. It is recommended to consult a doctor as soon as possible to perform pulp drainage so that the pain can be effectively relieved, taking painkillers and injections will not solve the fundamental problem. 3, acute periodontitis, that is, we say the fire tooth. This kind of pain is more continuous jumping pain, the tooth can not chew, the sick tooth seems to be longer than other teeth, there is a floating feeling. 4, acute wisdom tooth pericoronitis, that is, because of the pain caused by obstructed teeth, the pain is continuous, and there is gum redness, more also accompanied by sore throat and mouth opening difficulties, etc. 5, heavy wear of enamel or cervical wedge-shaped defect can also cause pain from hot and cold stimulation of the tooth, mainly because the dentin is exposed and feels sore when exposed to hot, cold or mechanical stimulation. It is recommended to consult a doctor for filling.