Yes, as you think..... necrosis tells you that something is dead and pulpal necrosis is telling you that the pulp has died. When the pulp of a tooth dies, the tooth is termed non-vital. Dead teeth or non-vital teeth are asymptomatic and therefore cause no discomfort to the the patient. In some cases, a dead tooth can be seen clinical with a discolored crown. In these cases, a periapical radiograph will be taken.