Shaping ability of ProTaper <scp>NEXT</scp>, ProTaper Universal and iRace files in simulated <scp>S</scp>‐shaped canals

Hiran-us, Sirawut; Pimkhaokham, Somsinee; Sawasdichai, Jirapat; Ebihara, Arata; Suda, Hiroshi

doi:10.1111/aej.12117

Cited by 19 publications

(18 citation statements)

References 18 publications

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“…Deviation of the root canals was determined according to the study by Hiranus et al (11). The distance between the canal wall on pre-and post-operation images was measured at 1 mm intervals on both the mesial and distal sides of the canal.…”

Section: Methodsmentioning

confidence: 99%

“…Protaper Universal (DentsplyMaillefer, Ballaigues, Switzerland) system was used as a benchmark system for comparison; as it often serves as a golden standard to which new file systems are compared (8-11). The null hypothesis was that there would be no significant differences in terms of canal straightening, centering ability and preparation time between the tested NiTi rotary file systems.…”

Section: Introductionmentioning

confidence: 99%

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

Forghani

Hezarjaribi

Teimouri³

2017

J Clin Exp Dent

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BackgroundThe aim of this in vitro study was to compare the shaping characteristics of two types of nickel-titanium endodontic file systems with regard to the following parameters: Canal straightening, Canal deviation and Instrumentation time.Material and MethodsFifty severely curved canals simulated in resin blocks were prepared to an apical size 25 using Protaper Universal orNeolix systems (n=25 canals/group). The angle of canal curvature was determined before and after instrumentation. Pre- and post-operative images were superimposed to determine any canal deviation. The instrumentation time was also recorded. The data were statistically analyzed by using independent sample t-test and the Mann-Whitney U-test.ResultsThere were no significant differences between the groups in terms of the change in canal angle (P > 0.05). The Neolix system produced less canal deviation at 7 of the 12 measuring points (p<0.05). The Neolix system also required less instrumentation time (p<0.05).ConclusionsBoth rotary systems were capable of maintaining the original curvature of the root canal; however, the Neolix system resulted in less canal deviation as well as shorter instrumentation time. Key words:Apical foramen,canal transportation, nickel-titanium instruments, Protaper Universal, root canal preparation.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Forghani

Hezarjaribi

Teimouri³

2017

J Clin Exp Dent

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“…This drawback will be resolved by use of a direct resin composite restoration after root canal treatment for a class IV cavity (23), which includes both the incisal edge and the proximal surface, with a high (90%) estimated overall success rate after 10 years (24). Further, the presence of enamel at the cavity margin affords an opportunity for long-term clinical success of a restoration due to durable and reliable resin-enamel bonds (25–27). Thus, the ISA outline approximates the incisal edge and creates thin enamel, although it is likely to have little impact on failure of restoration after root canal treatment.…”

Section: Discussionmentioning

confidence: 99%

Comparison of apical centring ability between incisal‐shifted access and traditional lingual access for maxillary anterior teeth

2017

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The aim of this study was to compare the apical centring ability of incisal-shifted access (ISA) with that of traditional lingual access (TLA). Fifteen three-dimensional printed resin models were prepared from the computed tomography data for a human maxillary central incisor and divided into ISA (n=7), TLA (n=7), and control (n=1) groups. After access preparation, these models were shaped to the working length using K-files up to #40, followed by step-back procedures. An apical portion of the model was removed at 0.5 mm coronal to the working length. Microscopic images of each cutting surface were taken to measure the preparation area and the distance of transportation. TLA created a larger preparation area than ISA (p < 0.05). The distance of transportation (mean ± standard deviation) was 0.4 ± 0.1 mm for ISA and 0.7 ± 0.1 mm for TLA (p < 0.05). Access cavity preparation has a significant effect on apical centring ability. ISA is beneficial for maintaining apical configuration.

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“…[16] However, these simulated resin canals allow direct visual comparison of the shaping ability of tested endodontic instruments and have thus been widely used to demonstrate differences in the performance of instruments under standardized conditions. [1011131517]…”

Section: Introductionmentioning

confidence: 99%

Comparison of the shaping ability of waveone reciprocating files with or without glide path in simulated curved S-shaped root canals

Yılmaz¹,

Küçükay²,

Istektepe³

et al. 2017

J Int Soc Prevent Communit Dent

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Objectives:The aim was to compare the shaping ability of WaveOne reciprocating files with or without glide path in simulated curved S-shaped root canals.Materials and Methods:Forty ISO #15, 0.02 taper, clear resin Endo Training Bloc-S blocks were studied. The simulated curved S-shaped canals were dyed using ink, preinstrumentation images were scanned, and resin blocks were prepared and divided into Group A: PathFile and WaveOne and Group B: WaveOne. All canals were postoperatively scanned. Pre- and postoperative images were superimposed and evaluated at 12 defined measuring points. The efficacy of the systems was compared based on the amount and direction of canal transportation, centering ability, amount of material removed, and presence of canal aberrations. Mann–Whitney U-test and independent t-test were used for statistical comparison.Results:Both systems produced transportation at all levels and straightened the curved S-shaped canals. No significant differences in the amount and direction of transportation and amount of material removed were observed between the groups at each level (P > 0.05). However, Group A had significantly greater centering ability at the coronal straight zone (P = 0.018) and apical curvature (P = 0.014) levels than did Group B. Moreover, Group B showed more canal aberrations than did Group A.Conclusion:Within the limitations of the present study, the creation of a glide path with the PathFile system improved the centering ability of the WaveOne reciprocating file in the apical and straight coronal portions of the simulated curved S-shaped root canals and reduced the incidence of canal aberrations.

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Shaping ability of ProTaper NEXT, ProTaper Universal and iRace files in simulated S‐shaped canals

Cited by 19 publications

References 18 publications

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

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

Comparison of apical centring ability between incisal‐shifted access and traditional lingual access for maxillary anterior teeth

Comparison of the shaping ability of waveone reciprocating files with or without glide path in simulated curved S-shaped root canals

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