Acute pulpitis usually has very pronounced pain. For example, pain from hot and cold stimulation, spontaneous pain, and nighttime pain. The pain usually lasts from three to five days, and in some cases it even lengthens to about a week. Pulpitis usually comes from the progression of caries. Caries is a disease of the hard tissues of the teeth, which is caused by the action of bacteria on the teeth and the destruction of the teeth. If the caries is not taken seriously, then it will continue to destroy the tooth tissue and then the tooth pulp, and pulpitis will be formed. Once pulpitis occurs, there will be very obvious pain. At this time, you should go to the hospital as soon as possible for root canal treatment, so as to completely solve the painful problem of pulpitis. If pulpitis is not treated in a timely manner, it can develop into periapical infection and even cause the tooth to form stumpy roots and crowns, so that the tooth can only be extracted. Therefore, for dental diseases, early diagnosis and early treatment must be done. In the early stage of slight caries, we should do the filling treatment in time, so that we can control the caries, so that it will not develop further and form the more serious consequences in the late stage. For teeth that have developed into pulpitis, it is necessary to treat them in time, because it will have very obvious pain. Therefore, do not rely on medicine to solve the problem of pulpitis. It is important to have regular root canal treatment so that the pulpitis can be treated completely.