Effect of ProTaper Universal,Endoflare, Revo-S,HyFlex Coronal Flaring Instruments,and Gates Glidden Drills on Crack Formation |
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Authors: | Hakan Arslan,Ertuğrul Karataş,Ismail Davut Capar,Damla Ö zsu,Ezgi Doğanay |
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Affiliation: | ∗ Department of Endodontics, Faculty of Dentistry, Ataturk University, Erzurum, Turkey;† Department of Endodontics, Faculty of Dentistry, Katip Çelebi University, ?zmir, Turkey |
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Abstract: | IntroductionThe aim of the present study was to evaluate crack formation after flaring root canals with Gates Glidden drills and ProTaper Universal (SX; Dentsply Maillefer, Ballaigues, Switzerland), Endoflare (MicroMega, Besançon, France), Revo-S (MicroMega), and HyFlex (Coltene-Whaledent, Allstetten, Switzerland) flaring instruments.MethodsOne-hundred eight mandibular molars were selected. Eighteen teeth were left unprepared to serve as negative controls; the experimental groups consisted of the mesiobuccal and mesiolingual root canals of the remaining 90 teeth, which were instrumented with the following coronal flaring instruments: Gates Glidden drills and ProTaper Universal SX, Endoflare, Revo-S SC1, and HyFlex 25.08 instruments. All roots were then sectioned perpendicular to the long axis at 1, 2, 3, 4, 6, and 8 mm from the cementoenamel junction. The sections were inspected under a stereomicroscope, and any crack formations were recorded. The data were analyzed using the chi-square test (P = .05).ResultsThe Gates Glidden drills resulted in a higher rate of crack formation than that noted in the control group (P < .05). Flaring of the root canals using the ProTaper Universal, Endoflare, Revo-S, and HyFlex instruments resulted in crack formation similar to that of the control group (P > .05).ConclusionsThe use of the Gates Glidden drills resulted in the formation of the most cracks. However, the results for the ProTaper Universal, Endoflare, Revo-S, and HyFlex flaring instruments were similar to those of the control group in terms of crack formation. |
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Keywords: | Coronal flaring cracks dentinal damage Endoflare Gates Glidden HyFlex ProTaper Universal Revo-S |
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