Pulp Necrosis
The death of the dental pulp tissue, resulting in loss of vitality and sensory function of the tooth.
Full Definition
Pulp necrosis is the irreversible breakdown of pulp tissue caused by bacterial infection, trauma, or ischaemia, leading to complete loss of pulp vitality. In research contexts, it is an outcome category used in endodontic survival and treatment studies, often verified through a combination of clinical tests and periapical radiography. Editors reviewing dental research manuscripts must distinguish pulp necrosis from reversible and irreversible pulpitis, as misclassification affects outcome reporting. It may be described as 'partial' or 'total' depending on histological extent, though clinically this distinction is rarely possible without extraction. Correct usage is essential when authors report baseline disease status in endodontic trials.
Usage
Usage note: Distinguish clearly from 'pulpitis' (inflammation with potential vitality) and from 'pulp calcification' (dystrophic change without necrosis).
In Context
- "Teeth diagnosed with pulp necrosis were excluded from the reversible pulpitis treatment cohort." — Methods section of an RCT
- "The prevalence of pulp necrosis following traumatic dental injury was the primary outcome measure." — Prospective cohort study abstract