A patient experienced tooth pain for three months, with discomfort intensifying when consuming hot beverages. Upon extraction and sectioning of the tooth, the pulp chamber was found to be completely filled with pus, and only small pulp tissue remnants were present at the root tip. What is the diagnosis?

Explanation

The presence of pus filling the pulp chamber along with residual pulp tissue indicates suppurative pulpitis, which is characterized by a purulent infection within the pulp. Acute partial or total pulpitis typically involves inflammation without pus formation, and pulp strangulation refers to constriction of the pulp tissue rather than infection.