Introduction: Cleaning and shaping of the root canal is the single most important phase of endodontic therapy.
The goal of root canal instrumentation is to obtain a continuous tapering funnel flowing with the shape of the original canal from the coronal access to the apex, so the Glidepath is the answer. The present study evaluated the influence of different glide path techniques on the dentinal crack formation of Hyflex EDM system such as Hyflex EDM GPF, Proglider, Neoendo flex Glide files.
Aim: The aim of this study was to evaluate the influence of different glide path techniques on the dentinal crack formation of Hyflex EDM system such as Hyflex EDM GPF, Proglider, Neoendo flex Glide files.
Materials and Method: 50 single rooted teeth were selected for study. 10 teeth were left as unprepared as the control group.10 teeth were prepared with Hyflex EDM without glidepath, and the remaining 30 teeth were assign to 1 of 3 Glidepath shaping groups such as Hyflex EDM GPF, Proglider, Neoendo flex Glide files.All the specimens were sectioned perpendicular at 3, 6, 9mm. Digital images of each section were captured at 25X magnification using a digital camera attached to a stereomicroscope. The results were expressed as the number and percentage of cracked roots in each group. The Chi-square test with Yates correction was used to determine for difference between groups. P value of less than 0.05 was considered statistically significant for all tests.
Result: NeoEndo flex glide file led to highest rate of crack formation and least in Hyflex EDM GPF Files.
Conclusion: Within the limitations of this in vitro study, glidepath with Hyflex EDM GPF showed less incidence of cracks formation compared with ProGlider and Neoeno flex glide.