Pulpitis, due to long-term lack of thorough treatment and chronic inflammation, can lead to partial or complete necrosis of the dental pulp. Acute pulpitis, when stimulated by cold or heat, causes severe tooth pain. If the dental pulp becomes purulent or partially necrotic, which is in the late stage of pulpitis, then surgical treatment is required. The best method in this situation is surgical treatment, including dental pulp therapy. Through effective dental pulp treatment, the inflammation and necrotic tissue inside the root canal of the tooth is completely removed, and finally, the canal is permanently filled. This allows the patient’s tooth to no longer feel pain and continue to function for chewing.