Outcome assessment
fistula, radiolucency, swelling, pain
ROOT RESORPTION
Clinical and radiographic assessment was carried out after 1 week and at 3, 6, 9, and 12 months (Figures  Bc putty follow‐up (a) Diagnostic image, (b) 1‐week follow‐up, (c) 3‐month follow‐up, (d) 6‐month follow‐up, (e) 9‐month follow‐up, and (f) 12‐month follow‐up MTA follow‐up (a) Diagnostic image, (b) 1‐week follow‐up, (c) 3‐month follow‐up, (d) 6‐month follow‐up, (e) 9‐month follow‐up, and (f) 12‐month follow‐up. MTA, Mineral Trioxide Aggregate.The treatment was considered clinically successful in the absence of pain, swelling, fistula, and pain on percussion and bites.Treatment was considered successful radiologically in the absence of periodontal ligament widening, and internal or external root resorption, in addition to evaluating the presence of radiolucency in the furcation area according to the following scores:Score 0: no radiolucency; score 1: radiolucency between ¼ of furcation to periapical areas; score 2: radiolucency between ¼ and ½ of furcation to periapical areas; and score 3: radiolucency more than ½ of furcation to periapical areas. Where the treated teeth with a score of 1 or 2 considered successfull according to the previous criteria.Statistical analysis was performed using SPSS 21.0 software (IBM, Armonk, NY, USA). The data were analyzed using the 