Pulpitis is usually treated well and the inflammation is eliminated in 4-5 days and the pain is relieved. The pain during an acute attack of pulpitis, if not treated in time, can last for about a week. After a week or so of attacks, pulpitis may develop into the pulp necrosis stage, and the pain will naturally be relieved when it enters the pulp necrosis stage. There is also the possibility of entering the chronic pulpitis stage, so the pain will also be relieved. Another result of this development is that the pulpitis continues to progress to the root tip and forms periapical inflammation. In this case the pain will last longer until the periapical inflammation, forming an apical abscess, which then breaks down again to form chronic periapical inflammation, and the pain will not really be relieved. Therefore, the pain of pulpitis depends on the development of the later regression, which is usually 4-5 days. Even if it develops into periapical periodontitis, it will take more than a week to relieve the pain. Therefore, it is important to go for treatment as early as possible when you have acute pulpitis. Immediate pain relief can be achieved during the acute phase of acute pulpitis by opening the pulp, draining the pulp chamber and reducing the pressure. In the pulpitis stage one cannot wait for its natural disappearance of pain, but should actively treat it, which can relieve the pain.