Dental pulp is located in the pulp cavity inside the tooth. The main components of the dental pulp include nerves, lymphatic and connective tissue, as well as dentin cells that line the periphery of the dental pulp. The main function of dental pulp is to form dentin, which has the ability to nourish, sense, and defend. Pulp nerves are particularly sensitive to external stimuli. If there is pulp inflammation, severe pain will occur. Common tools used to treat pulpitis includes dental files, root canal files, etc.