Pulpitis is actually a pain response that occurs when tooth decay further develops inflammation reaching the dental pulp tissue. Strictly speaking, pulpitis is an inflammatory pain response of the dental pulp that occurs when tooth decay further develops bacterial infection of the dental pulp tissue. Pulpitis requires early dental treatment. For tooth decay, it is sometimes sufficient to remove the decayed infected dental tissue and directly fill it. In cases of pulpitis, where the dental nerve is already exposed, anti-inflammatory treatment is necessary. First, the infected dental pulp tissue is removed with a drill, and since the dental nerve is exposed, nerve-killing is required. After controlling the inflammation, the root canal is disinfected, medication is placed in the root canal, and then the root canal is filled, which means that a complete root canal treatment is needed.