Evaluation of the root canal shaping ability of two rotary nickel-titanium systems

Abstract Background The purpose of this study was to evaluate the shaping advantage of M-wire NiTi ProTaper NEXT (PTN) compared with a conventional NiTi ProTaper Universal (PTU) file in heavy curvature canal. The shaping ability was measured by the amount of canal cutting and transportation between the PTN and conventional PTU. Methods Root canal shaping by the PTN and conventional PTU was classified into two experimental groups according to the final tip size, ISO #25 or ISO #40. Eighty-four J-shaped root canals (10°, 20°, 30° apical curvature) in resin block were used. Results After adjusting for the level and canal wall side, the mean transportation did not significantly decrease between the PTN and PTU with ISO #25. Significantly less deviation occurred with the PTN and PTU between 10° and 30° using ISO #40. Conclusions The M-Wire NiTi PTN improves file flexibility and enables accurate canal shaping for heavy curvature canals.

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Geometric Analysis of Maxillary First Premolar Prepared by Two Nickel-Titanium Rotary Instruments

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1510 ◽

2014 ◽

Vol 15 (2) ◽

pp. 174-180 ◽

Cited By ~ 3

Author(s):

Dina Al-Sudani ◽

Majed Almalki ◽

Saad Al-Shahrani ◽

Michael Ahlquist

Keyword(s):

Cross Sections ◽

Root Canal ◽

Geometric Analysis ◽

Microcomputed Tomography ◽

Nickel Titanium ◽

Rotary Instruments ◽

Significant Difference ◽

Before And After ◽

Canal Transportation ◽

Shaping Ability

ABSTRACT Aim The present study was conducted with the aim of evaluating and comparing the shaping ability of two Nickel-titanium rotary instruments, with two disparate design features, on root canal geometry of extracted human maxillary first premolars using microcomputed tomography. Study design Twenty four bifurcated maxillary first premolars were divided into two groups and embedded in a rubber-based impression material. Both groups were submitted to microcomputed tomography before and after canal preparation (buccal and palatal) with either ProFile Vortex or Revo-S rotary instruments. Images were reconstructed and cross-sections corresponding to a distance 1, 2, 3, 4, 5, 6, and 7 mm from the anatomical apex were selected for canal transportation analysis. Volume changes were also measured. Results The degree and direction of canal transportation were non-significant for both instruments. Statistically significant differences were observed only between levels in the buccal canal in both groups. There was no significant difference between the two rotary systems in regards to the volume of dentin removed. Conclusion Our findings showed that ProFile Vortex and Revo-S instruments respected the original root canal anatomy and behaved similarly. ProFile Vortex rotary systems produced with innovative process were concluded to shape the upper maxillary premolar by leading minimal canal transportation, similar to Revo-S, rotary systems produced from traditional process. How to cite this article Al-Sudani D, Almalki M, Al-Shahrani S, Ahlquist M. Geometric Analysis of Maxillary First Premolar Prepared by Two Nickel-Titanium Rotary Instruments. J Contemp Dent Pract 2014;15(2):174-180.

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Root Canal Shaping Using Nickel Titanium, M-Wire, and Gold Wire: A Micro–computed Tomographic Comparative Study of One Shape, ProTaper Next, and WaveOne Gold Instruments in Maxillary First Molars

Journal of Endodontics ◽

10.1016/j.joen.2018.09.013 ◽

2019 ◽

Vol 45 (1) ◽

pp. 62-67 ◽

Cited By ~ 9

Author(s):

Peet J. van der Vyver ◽

Farzana Paleker ◽

Martin Vorster ◽

Francois A. de Wet

Keyword(s):

Comparative Study ◽

Root Canal ◽

Gold Wire ◽

Nickel Titanium ◽

Computed Tomographic ◽

Canal Shaping

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On comprehensive analysis of root canal shaping ability of three endodontic files of different kinematics

Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine ◽

10.1177/09544119211014670 ◽

2021 ◽

pp. 095441192110146

Author(s):

Ankit Nayak ◽

Prashant K Jain ◽

Pavan Kumar Kankar ◽

Niharika Jain

Keyword(s):

Root Canal ◽

Comprehensive Analysis ◽

Endodontic Treatment ◽

Root Canal Treatment ◽

Bacterial Biofilms ◽

Natural Geometry ◽

Canal Shaping ◽

Shaping Ability

Infection of the tooth’s root canal requires what is called root canal treatment (RTC). The most important part of endodontic treatment is to shape the root canal and remove its infected portion using endodontic files of various protocols, kinematics and designs that suit the particular geometry. Cleaning and Shaping the canal efficiently remove the root canal bacterial biofilms or tissue remnants while keeping its natural geometry. The result is determined by shaping the ability of the relevant endodontic file. In the available literature, no norm has been established for the measurement of various endodontic files’ ability to do effective shaping. We present in this study a method to analyse and measure the shaping ability of endodontic files of three different kinematics.

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Comparitive evaluation of canal shaping ability of three nickel titanium instrument systems using cone beam computed tomography: An in vitro study

Endodontology ◽

10.4103/endo.endo_17_17 ◽

2017 ◽

Vol 29 (2) ◽

pp. 120 ◽

Cited By ~ 1

Author(s):

MuraliMohan Thota ◽

Sudha Kakollu ◽

Malini Duvvuri ◽

RameshBabu Garikapati

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

In Vitro Study ◽

Nickel Titanium ◽

Vitro Study ◽

Cone Beam ◽

Canal Shaping ◽

Shaping Ability

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Nickel-Titanium Single-file System in Endodontics

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1766 ◽

2015 ◽

Vol 16 (10) ◽

pp. 834-839

Author(s):

Alberto Dagna

Keyword(s):

Root Canal ◽

File System ◽

Nickel Titanium ◽

Root Canals ◽

Single File ◽

Continuous Rotation ◽

Bending Stresses ◽

Single Use ◽

Canal Shaping ◽

Clinical Cases

ABSTRACT Aim This work describes clinical cases treated with a innovative single-use and single-file nickel-titanium (NiTi) system used in continuous rotation. Background Nickel-titanium files are commonly used for root canal treatment but they tend to break because of bending stresses and torsional stresses. Today new instruments used only for one treatment have been introduced. They help the clinician to make the root canal shaping easier and safer because they do not require sterilization and after use have to be discarded. A new sterile instrument is used for each treatment in order to reduce the possibility of fracture inside the canal. The new One Shape NiTi single-file instrument belongs to this group. Case description One Shape is used for complete shaping of root canal after an adequate preflaring. Its protocol is simple and some clinical cases are presented. It is helpful for easy cases and reliable for difficult canals. Conclusion After 2 years of clinical practice, One Shape seems to be helpful for the treatment of most of the root canals, with low risk of separation. After each treatment, the instrument is discarded and not sterilized in autoclave or re-used. Clinical significance This single-use file simplifies the endodontic therapy, because only one instrument is required for canal shaping of many cases. The respect of clinical protocol guarantees predictable good results. How to cite this article Dagna A. Nickel-Titanium Single-file System in Endodontics. J Contemp Dent Pract 2015;16(10): 834-839.

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A microcomputed tomography evaluation of the shaping ability of three thermally-treated nickel-titanium rotary file systems in curved canals

Journal of International Medical Research ◽

10.1177/0300060518801451 ◽

2018 ◽

Vol 47 (1) ◽

pp. 325-334 ◽

Cited By ~ 2

Author(s):

Zhuwei Huang ◽

Jingjing Quan ◽

Jia Liu ◽

Wen Zhang ◽

Xiaolei Zhang ◽

...

Keyword(s):

Root Canal ◽

File Systems ◽

Microcomputed Tomography ◽

Nickel Titanium ◽

Root Canal Preparation ◽

Root Canals ◽

Before And After ◽

Shaping Ability ◽

Thermally Treated

Objective To evaluate the shaping ability of three thermally-treated rotary nickel-titanium (NiTi) systems including ProTaper Next (PTN), HyFlex™ CM (HFCM) and HyFlex™ EDM (HFEDM) during root canal preparation in simulated root canals. Methods A total of 45 simulated root canals were divided into three groups ( n = 15) and prepared with PTN, HFCM or HFEDM files up to size 25. Microcomputed tomography (microCT) was used to scan the specimens before and after instrumentation. Volume and diameter changes, transportations and centring ratios at 11 levels of the simulated root canals were measured and compared. Results HFEDM caused significantly greater volume increases than HFCM and PTN in the entire root canal and in the apical and middle thirds. HFCM removed the least amount of resin in the coronal third compared with HFEDM and PTN. Overall, HFCM caused significantly less transportation in the apical 2 mm and was better centred than PTN in the apical 3 mm. Conclusion Under the conditions of this study, all systems prepared curved canals without significant shaping errors and instrument fracture. PTN and HFCM cut less resin than HFEDM. HFCM stayed centred apically and cut the least material coronally.

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