Comparison of the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals

Aguiar, Carlos; Sobrinho, Pamella Bezerra; Teles, Fabíola; Câmara, Andréa Cruz; Figueiredo, José Antônio Poli de

doi:10.1111/j.1747-4477.2010.00276.x

Cited by 12 publications

(13 citation statements)

References 23 publications

(41 reference statements)

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“…Apical transportation is a change in the original trajectory of the root canal in its apical portion (Freire et al 2012); and mainly occurs due to progressive removal of dentine along the outer wall root canals with large curvatures (Aguiar et al 2013). Instruments of reciprocating system are made with a metallic alloy, M-Wire, which promotes greater flexibility and resistance to cyclic fatigue when compared with conventional NiTi alloys (Kim et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Retracted: Micro‐computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals

Meireles¹,

Brito²,

Marques³

et al. 2015

Int Endodontic J

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The following article from International Endodontic Journal, 'Micro-computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals' by D. A. de Meireles, T. C. C. A. de Brito, A. A. F. Marques, A. D. B. Garrido, L. F. R. Garcia & E. C. Sponchiado Jr, published online on 5 February 2015 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors, the journal Editor in Chief, Prof. Paul Dummer, and John Wiley & Sons Ltd. The retraction has been agreed due to the use of techniques for crucial measurements in canal shaping and a lack of clarity regarding the measuring methodology. The use of inadequate measuring methodologies makes the findings of the paper invalid.

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Section: Introductionmentioning

confidence: 99%

Retracted: Micro‐computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals

Meireles¹,

Brito²,

Marques³

et al. 2015

Int Endodontic J

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“…These results are in disagreement with a previous study 27 , which stated that the Twisted File ™ rotary system can be used in any clinical case, regardless of the anatomical aspect of the tooth. According to Duran-Sindreu et al The results of the present research showed that the ProTaper Universal ™ rotary system produced centered preparations maintaining the original root canal anatomy even in extremely curved canals, as demonstrated in previous studies [31][32][33][34] . These results may be related to the modified cross section design of the ProTaper Universal ™ rotary system.…”

supporting

confidence: 79%

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

et al. 2013

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Aim: Cone beam computed tomography (CBCT) was used to evaluate the ability of three NiTi rotary systems to maintain the original root canal anatomy. Methods: Sixty mesiobuccal canals of human mandibular first molars were divided into three groups with 20 root canals each. All teeth were scanned by CBCT before instrumentation. The images were captured digitally for further analysis using the Image Tools Software. The images were sectioned in three points, located at 9 mm, 6 mm and 3mm from the apex. In Group 1, the root canals were instrumented with ProTaper Universal™ rotary system; in Group 2, with Twisted File™ rotary system; and in Group 3, with M two ™ rotary system. Instrumented teeth were scanned again using CBCT and the images of the uninstrumented canals were compared with images of the instrumented canals. The results were statistically analyzed using the one-way ANOVA test. A level of significance of 0.05 was adopted.

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“…Different cross-sectional geometries of rotary instruments are believed to increase cutting efficiency, consequently reducing contact areas and torsional loads 2 . It is also known that the mass of the instrument plays an important role on the centering ability of these instruments.…”

Section: Discussionmentioning

confidence: 99%

“…It also presents a triangular convex cross section with shallow U-shaped grooves. All these features try to improve the flexibility of the larger instruments 2 . Despite presenting the same taper along the entire cutting blades, Wizard CD Plus promoted similar apical transportation in comparison with ProTaper Universal.…”

Section: Discussionmentioning

confidence: 99%

“…In Endodontics, apical transportation is evaluated after superposition and subtraction of two images (i.e., pre-operative and post-operative images) 2,11,22 . AutoCad 22 and Adobe Photoshop (Adobe Systems Inc, San Jose, USA) 9,11 are currently used for this purpose; however, the main disadvantage of the AutoCad and Adobe Photoshop is that both need manual superimposition of the images which depends on the operator.…”

Section: Introductionmentioning

confidence: 99%

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Wizard CD Plus and ProTaper Universal: analysis of apical transportation using new software

Giannastasio

Rosa

Peres³

et al. 2013

J. Appl. Oral Sci.

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ObjectiveThis study has two aims: 1) to evaluate the apical transportation of the Wizard CD Plus and ProTaper Universal after preparation of simulated root canals; 2) to compare, with Adobe Photoshop, the ability of a new software (Regeemy) in superposing and subtracting images. Material and MethodsTwenty five simulated root canals in acrylic-resin blocks (with 20º curvature) underwent cone beam computed tomography before and after preparation with the rotary systems (70 kVp, 4 mA, 10 s and with the 8×8 cm FoV selection). Canals were prepared up to F2 (ProTaper) and 24.04 (Wizard CD Plus) instruments and the working length was established to 15 mm. The tomographic images were imported into iCAT Vision software and CorelDraw for standardization. The superposition of pre- and post-instrumentation images from both systems was performed using Regeemy and Adobe Photoshop. The apical transportation was measured in millimetres using Image J. Five acrylic resin blocks were used to validate the superposition achieved by the software. Student's t-test for independent samples was used to evaluate the apical transportation achieved by the rotary systems using each software individually. Student's t-test for paired samples was used to compare the ability of each software in superposing and subtracting images from one rotary system per time. ResultsThe values obtained with Regeemy and Adobe Photoshop were similar to rotary systems (P>0.05). ProTaper Universal and Wizard CD Plus promoted similar apical transportation regardless of the software used for image's superposition and subtraction (P>0.05). ConclusionWizard CD Plus and ProTaper Universal promoted little apical transportation. Regeemy consists in a feasible software to superpose and subtract images and appears to be an alternative to Adobe Photoshop.

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Comparison of the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals

Cited by 12 publications

References 23 publications

Retracted: Micro‐computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals

Retracted: Micro‐computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals

Changes in root canal anatomy using three nickel-titanium rotary system: a cone beam computed tomography analysis

Wizard CD Plus and ProTaper Universal: analysis of apical transportation using new software

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