Resumen:
Objective: Root canal shaping is as important as irrigation and filling when attempting to obtain a high suc cess rate in endodontic treatment. The creation of a glide path before the use of rotary instruments reduces
the risk of posterior iatrogenic errors. The objective of the present study was to evaluate instrumentation
time and root canal transport after using 2 different glide path rotary systems.
Methods: In total, 60 mesiobuccal root canals of mandibular molars, with curvature angles between 11°
and 82°, were standardized to measure 15 mm. The specimens were divided into 2 groups, depending on
their angles of curvature (11º–38º and 39º–82º), and further divided into 4 groups (n=15). Two groups were
instrumented using the PathFile system and the other 2 using the ProFinder system. The angle and radius
of curvature were measured at the most abrupt angle of curvature before and after instrumentation. Both
measurements were analyzed and compared using AutoCAD software to determine canal transportation.
Curvature angles were compared using Student’s t test and the radii of curvature using the Wilcoxon test. The
time for instrumentation was also evaluated using Student’s t t...