Fig. 1From: Cone-beam computed tomographic analysis of apical transportation and centering ratio of ProTaper and XP-endo Shaper NiTi rotary systems in curved canals: an in vitro study(a). CBCT scans before and after instrumentation of mesiobuccal canal by XP-endo Shaper at 3, 4 and 5Â mm from the apex. (b) CBCT scans before and after instrumentation of mesiobuccal canal by ProTaper Universal at 3, 4 and 5Â mm from the apexBack to article page