Dentists separate two conditions. In reversible pulpitis, the nerve is irritated but can recover once the cause, such as a cavity, is removed and filled. In irreversible pulpitis, inflammation has gone too far for the nerve to heal, and root canal treatment is needed. A cold test and an X-ray help the dentist tell them apart. This distinction is why a good clinician will not rush you ... https://bibleflock.com/blogs/844/Root-Canal-in-Johar-Town-What-Is-Actually-Happening-Inside