Multiple choice Which of the following types of traumatized teeth have a better rate of survival? Teeth with closed apices Teeth with open apices Primary teeth Apices of teeth are not related to their survival. None of these Reveal answer Fill a bubble to check yourself B Correct answer Explanation Open apex has more circulation and the tooth is still in developmental stage. There are viable cells as well in the connective tissue, which can differentiate accordingly. Thus, there is better prognosis.