Detection of Dentinal Microcracks in Radicular Dentin after Shaping with XP-endo Shaper, Neoendo Flex Files, and Hero Shaper Using Scanning Electron Microscope: An In Vitro Study

摘要

Working length was determined using a patency file (size, 10K file). Canals were instrumented using a set of hand K files system (SybronEndo, USA), maintaining the master apical size up to #30, enlarged up to #80 in step back technique. EDTA (ethylenediaminetetraacetic acid) gel was used as the lubricant. Irrigation was done using 5 mL of 5% NaOCl, by means of a 30 gauge side-vented needle, which is kept at 1 mm short of apex.“No defect”—root dentin free of craze lines, cracks, or defects on the root surface (inner and outer)“Defects”—all lines and cracks observed, which were extended or not extended to the external root surface, for example, a craze line or a partial crack, and complete crack[11]Statistical analysisCollected data were evaluated using chi-square test. Statistical Package of Social Sciences (SPSS) software, version 17.0, was used.