Apexification Treatment With MTA(Mineral Trioxide Aggregate) and Ca(OH)2

Ninety immature teeth with necrotic pulps and periapical lesions on patients (aged 16-40y) were treated with AT using MTA (45 teeth) or CH (45 teeth) between 2015 and 2018. The patients were contacted for follow-up examination at 12 to 48 months after treatment. The treatment outcome based on clinical and radiographic criteria was assessed by calibrated examiners and dichotomized as "healed+healing" or "not healed". The age, gender, stage of root development, preoperative signs and symptoms of apical periodontitis and size of periapical lesion were recorded.