A tooth does not respond to cold, heat, or electric pulp testing and is asymptomatic. Which pulpal diagnosis is most likely?

A necrotic pulp has no vital nerve or blood supply, so it fails to respond to thermal and electric pulp tests and is often asymptomatic until periapical involvement develops.Other options: Reversible and irreversible pulpitis both involve a vital, responsive pulp; a normal pulp responds normally to testing.Key exam takeaway: No response to any pulp test = pulp necrosis; confirm with a second test and a periapical radiograph.