Pulpitis is a condition in which bacteria enter the pulp chamber and cause an inflammatory reaction in the pulp, resulting in pain. There are pulp and blood vessels in the pulp cavity, and the pulp is also commonly known as the dental nerve, and pulpitis is also known as dental neuritis. Pulpitis is the inflammation of the tooth pulp caused by the bacteria infecting the tooth pulp after the dental caries caused by plaque was not treated in time. Prevent pulpitis is to prevent caries first, the methods are: 1, rinse mouth after meal, after the meal should develop the habit of rinsing mouth, especially in eating cakes, candy food, more should rinse mouth, sweet food can breed bacteria at high speed, rinse mouth can effectively prevent bacteria breeding, keep oral hygiene. 2. Brush your teeth in the morning and evening, brush your teeth effectively and remove plaque as thoroughly as possible. 3. You can choose fluoride toothpaste when brushing your teeth, which can help remove plaque and play the role of fluoride in preventing caries at the same time. 4. You should quit smoking and alcohol. Smoking and alcohol will lead to the loss of vitamins and minerals in the mouth that keep the mouth clean, so you should quit smoking and alcohol for the sake of oral health. 5.Eat more vegetables, vegetables are rich in fiber tissue, fiber tissue can effectively clean the mouth and prevent bacteria breeding. 6.If there is tartar, it should be scaled in time, tartar will cause plaque difficult to control. 7.Find cavities and treat them as early as possible. Pulpitis is very common in the clinic, if daily scientific care is carried out and cavities are found to be treated as early as possible, it can generally be avoided.