[Therapy of chronic apical periodontitis in traumatically injuring front teeth with ongoing root growth].

Because of the patient's age and the width of the apical foramen, conventional or surgical root canal fillings are frequently not indicated for the treatment of chronic apical periodontitis in teeth whose roots have not yet fully grown. Therefore resorbable paste fillings are applied either to induce deposition of apical hard substance or to bridge the time until root canal filling is possible. In a comparative clinical and radiological study in 171 young patients, Walkhoff's iodoform paste and calcium hydroxide were examined with regard to their inductive effect on the formation of an apical hard substance barrier.