For the same patient, tooth #2 tests negative to cold (endo ice) but is painful to percussion and palpation. What is the diagnosis of tooth #2?

No response to cold indicates pulp necrosis; pain to percussion/palpation indicates inflammation has reached the periapex (symptomatic apical periodontitis).Other options: Irreversible/reversible pulpitis would still respond to cold; a normal pulp/apex would not be tender to percussion.Key exam takeaway: No cold response + percussion tenderness = pulp necrosis with symptomatic apical periodontitis.