Study design and specimens
incisors, tooth
Twelve standardized, synthetic replicates of central maxillary and lateral incisors were randomly divided into two groups: (G1) six non-endodontic teeth and (G2) six root canal-treated teeth. To prevent the morphology of the maxillary incisors from influencing the visualization of resorptions, the allocation of tooth type to each group was randomized. After randomization, four central and two lateral incisors were assigned to group 1 and three central and three lateral incisors to group 2. This randomization was applied to determine the root canal morphology of each group. Figure Schematic illustration of the methodology workflow used