Stereomicroscopic examination of dentinal microcracks formation with Protaper Next, Protaper Gold and E-Flex Gold rotary File Systems

Document Type : Original Article

Authors

1 Assistant Professor، Endodontic Department, Faculty of Dentistry, Ain Shams University

2 Associate Professor، Endodontic Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt

Abstract

Aim: The aim was to assess the incidence of dentinal cracks following root canal instrumentation by means of ProTaper Next, ProTaper Gold and E-flex Gold rotary files.

Methodology: Samples were based on one hundred extracted lower first molars. They were allocated into a control group of ten teeth and three experimental groups of thirty specimens. Mesiobuccal canals were instrumented using ProTaper next, Protaper Gold and E-Flex Gold. Transverse sectioning was done at 3mm, 6mm, and 9mm from the apical end and stereomicroscopically viewed. Chi- Square test followed by Fischer exact tests were used for statistical analysis of the data set.

Results: The control group had no cracks. E flex Gold files yielded significantly less cracks than ProTaper Gold and ProTaper Next, (p ˂ 0.05). The middle and apical thirds showed more cracks than the coronal third.

Conclusion: Eflex Gold resulted in less dentinal crack formation than Protaper Gold and Protaper Next.

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Egyptian Dental Journal
Volume 69, Issue 4 - Serial Number 5
Conservative Dentistry and Endodontics
October 2023
Pages 3185-3189

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