Computed Tomography Evaluation of  Canal Transportation and Volumetric  Changes in Root Canal Dentin of  Curved Canals Using Mtwo, ProTaper  and ProTaper Next Rotary System-An  In-vitro Study

Shivashankar, Mayuri Biccodu; Niranjan, Nandini T.; Jayasheel, Arun; Kenchanagoudra, Mallikarjun Goud

doi:10.7860/jcdr/2016/20373.8788

Cited by 17 publications

(20 citation statements)

References 24 publications

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“…12,22,23 To study the performance of the instruments examined through the whole canal length, the analysis of three different canal levels-apical, middle, and coronal levels, represented by 3 mm, 5 mm, and 7 mm from the apex, respectively, was performed. 21,24,25 The results of this study showed that at the middle and the coronal levels, there was no significant difference between the four groups in canal centering ratio or the amount of canal transportation. However, at the apical level, WaveOne Gold files showed the best centering ratio and the least amount of canal transportation.…”

Section: Discussionmentioning

confidence: 64%

Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography

2020

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Objectives To evaluate the shaping ability of four different single-file systems using micro-computed tomography (micro-CT). Materials and Methods Eighty mesiobuccal and mesiolingual canals of permanent mandibular molars were randomly assigned to four groups according to the file used; WaveOne Gold, RECIPROC Blue, HyFlex EDM, and One Shape (n = 20). The samples were scanned using micro-CT for the preinstrumentation record; then the canals were instrumented and scanned for the postinstrumentation records. Statistical Analysis The data were then analyzed statistically using one-way analysis of variance (ANOVA) with the level of significance set at α = 0.05. Results The results of canal centering ratio and canal transportation showed that no significant difference was found among the four file groups at the middle and the coronal levels. However, a significant difference was found at the apical level (p < 0.05), where WaveOne Gold showed the best centering ratio and the least amount of canal transportation. The change in the canal volume was significant at the coronal level (p < 0.05), whereas the change in the canal volume was higher for the HyFlex EDM group than the other groups. No significant difference was found between the other groups at the apical level, middle level, or in the total percentage of canal volume. Conclusion WaveOne Gold produced a more centralized canal preparation with a lesser amount of transportation at the apical level. HyFlex EDM showed the highest canal volumetric change at the coronal level. The interim design of the endodontic files has a high impact on the behavior of the file inside the root canal.

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Section: Discussionmentioning

confidence: 64%

Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography

2020

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“…18 Schäfer et al 19 compared the efficacy of shaping simulated curved canals using M two ®, K3®, and Race® files, and concluded that the M two instruments prepared curved canals more quickly, respecting their original curvature, but the number of fractured instruments was greater than with the Race and K3 systems. Recently, Shivashankar et al 20 reported similar findings regarding dentin volume removed and canal transportation in the preparation of mesial molar canals with the M two , ProTaper, and Protaper NEXT systems.…”

Section: Mechanical Properties Of Nickel-titaniummentioning

confidence: 69%

Nickel–titanium instruments in endodontics: a concise review of the state of the art

et al. 2018

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The introduction of automated instrumentation in endodontics represented a major advance in progress for this specialty, with improvements in the quality and predictability of root canal preparation and a significant reduction in procedural errors. In recent years, endodontic instruments have undergone a series of changes brought about by modifications in design, surface treatments, and thermal treatments. In addition, new movements have also been incorporated to offer greater safety and efficiency, optimizing the properties of the NiTi alloy, especially through eccentric rotary motion. An understanding of the mechanical properties of these new NiTi instruments and their effect on the clinical performance of root canal preparation is essential if dental practitioners are to select the instruments that provide optimal clinical outcomes, especially in curved or flattened canals. The objective of this literature review is to present and discuss the characteristics of the NiTi alloys used in the major instrumentation systems available in the market, as well as the influence of the metallurgical and mechanical properties of NiTi instruments and the movements that drive them, to enable more accurate and predictable planning of root canal preparation.

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“…While, the second and third levels were established at 6 and 9 mm representing critical levels at middle and coronal thirds respectively that are prone to stripping (16) . The apical preparation was completed to F2 file (0.25 tip size) as it has been reported that, the amount of canal transportation increases with apical preparation larger than # 25 (19) .…”

Section: Discussionmentioning

confidence: 99%

Accuracy of CBCT, Digital and Conventional Radiography in Evaluating the Shaping Performance of a Novel NiTi Rotary System ( An in Vitro Study)

Ammar

Sabet

Bastawy

2020

Egyptian Dental Journal

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Computed Tomography Evaluation of Canal Transportation and Volumetric Changes in Root Canal Dentin of Curved Canals Using Mtwo, ProTaper and ProTaper Next Rotary System-An In-vitro Study

Cited by 17 publications

References 24 publications

Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography

Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography

Nickel–titanium instruments in endodontics: a concise review of the state of the art

Accuracy of CBCT, Digital and Conventional Radiography in Evaluating the Shaping Performance of a Novel NiTi Rotary System ( An in Vitro Study)

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