Obturation quality assessment
Immediate post-operative CBCT was done for assessing the obturation quality by two trained pediatric dentists, blinded to the instrumentation technique by evaluating Metapex length according to Coll and Sadrian’s [
Score-1 (Underfilling): Canal filled with metapex that extends more than 2 mm short of apex.Score-2 (Optimal filling): Canal filling at the radiographic apex or up to 2 mm short of apex.Score-3 (Overfilling): Any canal that has filling beyond the root apex.In addition, the presence and/or absence of voids were detected as apparent radiolucent areas within the radiopaque metapex in the root canals. Voids were scored as present or absent [