The causes of tooth nerve pain are as follows: 1. First of all, the biggest one is tooth decay, which is often said to be tooth decay. If a cavity is not treated and a hole is found, then slowly the hole will become deeper and deeper, and it will feel a little bit painful when eating cold, hot or sweet for a long time, so I think it will be over if I put up with it, and I don’t care. When you fall down, you may feel that there is no uncomfortable feeling, but you feel that your teeth are shaking, and only after some time your teeth start to hurt, this is actually trauma that has injured the dental nerve, resulting in dental neuralgia; 3. This is another cause of dental neuralgia. 4, there are other rare clinical causes, such as going to the treatment, if it is not a regular hospital, the water jet system may not be so good, and the grinding time is long. If you go to the treatment, if not the regular hospital may not be so good, grinding for a long time, chemical and physical stimulation, the dental nerve may also cause pain. Other rare causes are not listed.