Comparison of the shaping characteristics of Neolix and Protaper Universal systems in preparation of severely-curved simulated canals

Forghani, Maryam; Hezarjaribi, Maryam; Teimouri, Hamidreza

doi:10.4317/jced.53476

Cited by 12 publications

(12 citation statements)

References 23 publications

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“…Typhoon and Vortex files caused more apical transportation than that by self-adjusting file; however, the differences found by them could be due to the use of resin blocks instead of extracted teeth (8). Similar results have been reported in other studies evaluating different rotary files with different techniques of measurement of canal transportation (23)(24)(25)(26). However, it is important to highlight that the differences found in some studies are due to the type of study design employed; in our study, we employed an in vitro design with extracted teeth.…”

Section: Discussionsupporting

confidence: 80%

Evaluation of Apical Transportation by Three Rotary Systems in Extracted Teeth with Curved Canals

Ortiz-Rocha

Dávila-Pérez

Vitales-Noyola

et al. 2018

Odovtos - Int J Dent Sc

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The aim of this study was to compare the apical transportation in extracted teeth using three different rotary nickel-titanium systems (Mtwo, Hyflex CM, and Typhoon). Sixty extracted first molars were randomly divided into three groups (n=20 in each group) with similar root canal curvatures (25-52 degrees). All root canals were prepared to size 30 using a crown-down preparation technique for each rotary system. Loss of working length and apical transportation were determined by X-ray evaluation. Comparisons between the groups were performed using one-way analysis of variance (ANOVA) or Kruskal-Wallis tests, and the post hoc analyses employed were Dunn´s or Tukey´s multiple comparison tests. No significant differences were detected between the different rotary systems in the loss of working length and apical transportation. This in vitro study showed that the use of these three rotary systems are safe and useful for instrumentation in curved canals; however, further in vivo research is essential to compare the effectiveness and safety of these systems for use in curved canals.

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Section: Discussionsupporting

confidence: 80%

Evaluation of Apical Transportation by Three Rotary Systems in Extracted Teeth with Curved Canals

Ortiz-Rocha

Dávila-Pérez

Vitales-Noyola

et al. 2018

Odovtos - Int J Dent Sc

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“…ProTaper Universal is an index system and is the gold standard for comparison of new rotary les [4]. Its convex cross-section with a small U-shaped groove in each triangular convex blade has further added to its exibility and decreased the incidence of apical transportation [2].…”

Section: Introductionmentioning

confidence: 99%

Cone-Beam Computed Tomographic Analysis of Apical Transportation and Centering Ratio of Protaper and XP-Endo Shaper Niti Rotary Systems in Curved Canals: An in Vitro Study

Karkehabadi

Siahvashi

Shokri

et al. 2020

Preprint

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Background: Cleaning and shaping of the root canal system is important in an endodontic treatment. Canal transportation is a common procedural error in preparation of curved canals. This study aimed to compare the canal transportation and centering ratio of two rotary files in curved canals using cone-beam computed tomography (CBCT). Methods: 44 extracted human mandibular first molars with mature apices and apical curvature of 10° to 30° were selected. The samples were randomly divided into two groups (n=22) with similar curvature. The canals were prepared with ProTaper and XP-endo Shaper file systems according to the manufacturers’ instructions. CBCT images were captured using Cranex 3D CBCT system before and after root canal preparation, and canal transportation and centering ratio of the files at 3, 4 and 5 mm from the apex were calculated. Data were analyzed and compared between two groups using independent t-test at 0.05 level of significance.Results: The ProTaper Universal caused greater canal transportation and had lower centering ratio than XP-endo Shaper in both mesiodistal and buccolingual directions at all levels from the apex. The difference between two groups regarding transportation was significant at all levels from the apex in buccolingual direction (P<0.05) except for 3 mm from the apex (P>0.05). The difference between two groups regarding centering ratio was not significant (P>0.05) in mesiodistal direction at all levels except for 4 mm from the apex (P<0.05). Conclusion:The ProTaper Universal causes greater canal transportation in both buccolingual and mesiodistal directions than XP-endo Shaper.

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“…Cross section of Neoniti is a homothetic rectangle, the built-in abrasive property of the flutes, hard cutting edges, circumferential brushing motion in the middle, coronal third and pecking motion in apical third, may have led to aggressive cutting and caused canal transportation. [ 31 ]…”

Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomography assessment of root canal transportation using WaveOne Gold and Neoniti single-file systems

2017

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Introduction:The aim of this study was to compare canal transportation of two single-file systems, WaveOne Gold and Neoniti, using cone-beam computed tomography (CBCT).Methodology:A total of 40 mesiobuccal canals of maxillary first molars with curvatures of 15°–30° were chosen and randomly divided into two experimental groups (n = 20). In both groups, glide path was established using ProGlider. In group 1, canals were shaped with WaveOne Gold and in group 2 with Neoniti A1, respectively. According to manufacturer's instructions, canal preparation was made. Canals were scanned before and after instrumentation using CBCT scanner to evaluate root canal transportation at 3, 5, and 7 mm from the apex. Data were statistically analyzed, and significance level was set at P < 0.05.Results:Mesiodistal and buccolingual transportation showed a statistically significant difference at 3 mm (P = 0.009) and 7 mm (P = 0.002), respectively, when instrumented with Neoniti than WaveOne Gold.Conclusion:WaveOne Gold single reciprocation file respected original canal anatomy better than Neoniti single continuous file

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Comparison of the shaping characteristics of Neolix and Protaper Universal systems in preparation of severely-curved simulated canals

Cited by 12 publications

References 23 publications

Evaluation of Apical Transportation by Three Rotary Systems in Extracted Teeth with Curved Canals

Evaluation of Apical Transportation by Three Rotary Systems in Extracted Teeth with Curved Canals

Cone-Beam Computed Tomographic Analysis of Apical Transportation and Centering Ratio of Protaper and XP-Endo Shaper Niti Rotary Systems in Curved Canals: An in Vitro Study

Cone-beam computed tomography assessment of root canal transportation using WaveOne Gold and Neoniti single-file systems

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