Abstract Aim To compare the resistance to cyclic fatigue of WaveOne Gold ( WOG ), Reciproc and WO ) nickel–titanium files in an artificial root canal with a double (S‐shaped) curvature. Methodology A total 120 new primary, R25 primary were tested artificial, stainless steel S‐shape (diameter, 1.4 mm length, 18 mm). Forty from each system rotated until fracture calculate number cycles failure NCF ). The length fractured fragment was recorded. Data analysed using one‐way analysis variance...

To evaluate the effect of a glide path on amount apically extruded debris during canal preparation using single-file systems in curved canals.Ninety extracted mandibular molar teeth were randomly assigned to six groups (n = 15 for each group) instrumentation. Endodontic access cavities prepared tooth. In three groups, was not created whereas PathFile instruments mesial canals all remaining groups. The then instrumented with following instrument systems: WaveOne, Reciproc and OneShape. Debris...

To assess the amount of debris extruded apically during root canal preparation using various nickel-titanium instrumentation systems.Sixty extracted single-rooted mandibular premolar human teeth were randomly assigned to four groups (n = 15 for each group). The canals then instrumented with following instrument systems: Vortex Blue (VB; Dentsply Tulsa Dental, Tulsa, OK, USA), K3XF (SybronEndo, Orange, CA, Reciproc (VDW, Munich, Germany) and ProTaper Next (PTN; Maillefer, Ballaigues,...

To assess the amount of debris extruded apically during root canal preparation using various nickel titanium instrumentation systems and hand files in primary molar teeth.Sixty extracted first mandibular human teeth were randomly assigned to four groups (n = 15 for each group). The canals then instrumented with following instrument systems: Revo-S, Mtwo, ProTaper Next, files. Apically was collected into pre-weighed Eppendorf tubes. tubes stored an incubator at 70°C 5 days. weight dry...

Abstract This study compared the cyclic fatigue resistance ( CFR ) of three controlled memory CM nickel‐titanium rotary files (One Curve, EdgeFile and HyFlex in comparison with a file (ProTaper Next) made from M‐wire alloy at two different temperatures (room intracanal) an s‐shaped canal. One hundred sixty were tested to determine OneCurve, EdgeFile, ProTaper Next artificial canal room intracanal temperature. The number cycles failure was recorded, data analysed. At both temperatures,...

To compare the cyclic fatigue resistance of R-PILOT and WaveOne Gold Glider files in curved artificial canals.A total 60 new were tested canals with 45° 60° angles curvature. Fifteen each brand both canals. Cyclic was determined by recording time to file fracture The length fractured fragment also recorded. An independent sample t-test used analyse data.In canal a angle curvature, no significant differences observed between (P > 0.05). In had greater than < There difference terms lengths...

To evaluate the effect of coronal flaring on amount debris extruded apically during root canal preparation using Reciproc, WaveOne (WO) and OneShape (OS) single-file systems.Ninety extracted single-rooted mandibular incisor teeth were randomly assigned to six groups (n = 15 for each group) instrumentation. Endodontic access cavities prepared in tooth. In three groups, was not performed; performed with Gates-Glidden drills all remaining groups. The canals then instrumented one or other...

Abstract Aim To compare the weight of apically extruded debris produced during removal root canal filling material using various files in extracted teeth with simulated apical resorption. Methodology The canals one hundred and twenty mandibular premolar were prepared Revo‐S filled a cold lateral compaction technique gutta‐percha resin‐based sealer (AdSeal; Meta‐Biomed, Cheongwon, Korea). Sixty randomly assigned to four control groups (hand file, ProTaper Universal retreatment D‐RaCe Reciproc...

Objectives: This study evaluated the intensity and duration of postoperative pain after removal root canal filling material in retreatment procedures upper incisor teeth with chronic apical periodontitis, using different techniques.Materials methods: One hundred thirty-five patients requiring periodontitis were included study. The assigned to three groups 45 patients, according method used remove old material. In group 1, was removed hand files. 2, ProTaper universal (PTUR) instruments. 3,...

Abstract Aim To compare the cyclic fatigue resistance ( CFR ) of PathFile, ProGlider and ScoutRaCe nickel‐titanium (NiTi) rotary instruments used in an S‐shaped artificial canal. Methodology A total 90 were tested canal n = 30 for each group: PathFile (size 16, 2% constant taper), variable taper between 8% along shaft) 15, taper). All files rotated until fracture. The number cycles to failure was counted determine . length fractured fragment measured millimetres. analysed statistically with...

Aim To evaluate the fracture resistance of simulated immature teeth that had been backfilled using different materials after B iodentine as apical plug material. Design Seventy‐five single‐rooted were divided into five groups ( n = 15). The 15 in group 1 served a negative control and received no treatment. remaining 60 instrumented to #6 P eeso reamer obtain standard internal diameter 1.5 mm. 4 mm was filled with iodentine. backfilling then performed on each follows: 2 – (positive control),...

The optimal bonding of adhesives to dentin requires the sealer be completely removed from dentinal walls. aim this study was investigate effect different cleaning procedures using gutta-percha solvents on bond strength adhesive resins AH Plus contaminated (APCD). pulp chamber surfaces were with and cleaned five techniques (dry cotton, chloroform, orange oil, eucalyptol, ethanol). Then, Clearfil SE Bond (CSE) (Kuraray), Tetric N (TNB) (Ivoclar Vivadent) applied filled a composite resin....

To compare the cyclic fatigue resistance of D-RaCe and ProTaper rotary nickel-titanium (NiTi) retreatment files when used in curved artificial canals.A total 120 new DR2 D3 were tested stainless steel canals having 45° 60° angles curvature. Thirty instruments each file systems both curvature (n = 30). The rotated until fracture to calculate number cycles failure. length fractured fragment was recorded. Data analysed by independent sample t-test. Fractured surfaces scanning electron...

Purpose The aim of this study was to compare the efficiency different final irrigation techniques remove artificially placed dentinal debris from a simulated internal root resorption (IRR) cavity. Methods Seventy teeth were prepared using ProTaper system. roots then split longitudinally into two halves, in each which standardized IRR cavities prepared. Five set aside serve as negative control group. Each cavity remaining 65 filled with dentin mixed 2.5% NaOCl. Another 5 (positive control)...

In the present study, we compared cyclic fatigue resistance (CFR) of Reciproc Blue, WaveOne Gold, and SmartTrack files in curved artificial canals.Ninety new Blue R25, Gold Primary, X1 were tested canals with 45° 60° angles curvature. CFR was determined by recording time to fracture canals. Two-way analysis variance used analyze data.In canal a angle curvature, no significant differences observed amongst (P > .05). had greater than < .05); there difference between .05).The results study...