Fig. 2From: A comparison of the shaping ability of three nickel-titanium rotary instruments: a micro-computed tomography study via a contrast radiopaque technique in vitroThree-dimensional panels of the simulated canals in the PTU (ProTaper Universal, top), Reciproc (middle) and K3XF (bottom) groups. a Preoperative reconstruction of the simulated canal; b Postoperative reconstruction of the simulated canal; c Superimposed reconstructions of the simulated canal; d The points at which the canal width was measured after superimposition of pre- and post-operative images. The green colour indicates the canal before instrumentation, and the red colour represents the canal after instrumentationBack to article page