ABSTRACT Objective. To compare canal transportation in simulated double-curved root canals afterinstrumentation with the Reciproc® R25 and Reciproc® Blue R25 files. Materials and methods. Thirty Endo Training Block-S models were dyed with black India ink and photographed. The resin blocks were randomly divided into two groups: A and B (n = 15). The canals were instrumented with the Reciproc R25.. Read more