What characterizes irreversible pulpitis?

Irreversible pulpitis is characterized by severe inflammation of the dental pulp that cannot heal on its own. This condition typically arises from untreated dental caries, trauma, or repeated dental procedures. The inflammation results in intense pain, which is often spontaneous and may be exacerbated by temperature changes or pressure.

In irreversible pulpitis, the pulp becomes necrotic due to prolonged inflammation, which increases the risk of infection. As a consequence, root canal therapy is necessary to remove the infected pulp tissue and alleviate the pain, thereby saving the tooth from extraction. This is why identifying irreversible pulpitis as an infectious condition that requires treatment, specifically root canal therapy, is critical in dental practice.

The other options depict either a misunderstanding of the nature of pulpitis or describe conditions that do not accurately characterize irreversible pulpitis. For instance, the idea that the pulp can heal contradicts the irreversible aspect of the condition, while a notion that it's merely an easily treatable form of decay minimizes the seriousness of the inflammation and infection involved. Lastly, suggesting that it does not involve infection overlooks the significant risks associated with this painful condition, emphasizing the need for timely intervention.