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Stereomicroscopic Evaluation Of Dentinal Microcracks After Instrumentation Of Curved Canal With Rotary Files In Two Motions, Nupur Vasava, Shreya Modi, Chintan Joshi, Sweety Thumar, Anisha Parmar, Kruti Jadawala

Journal of Dentistry Indonesia

Objective: This study aimed to examine the effects of three distinct file systems with two motion types—rotary and reciprocation—on the development of dentinal microcracks after root canal preparation using a stereomicroscope. Methods: Sixty mandibular molars with a curvature of 30° were decoronated and divided into three groups (Vortex Blue, Mtwo, and ProTaper Next) and two subgroups (rotary and reciprocating motions). The samples were then instrumented with the files, dyed with 1% methylene blue dye, and sectioned horizontally at 3, 6, and 9 mm from the root apex. The dentinal microcracks were inspected using a stereomicroscope at 40× magnification. One-way analysis …