scholarly journals A comparative evaluation on the cleaning and shaping ability of three nickel titanium rotary instruments using computerized tomography - An ex vivo study

2012 ◽  
Vol 3 (6) ◽  
pp. 151 ◽  
Author(s):  
GopalS. Narayan ◽  
SokkalingamMothilal Venkatesan ◽  
C. S. Karumaran ◽  
S. Ramachandran ◽  
M. R. Srinivasan ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Comparative Evaluation ◽  
Ex Vivo ◽  
Nickel Titanium ◽  
Rotary Instruments ◽  
Shaping Ability ◽  
Ex Vivo Study

scholarly journals Comparative evaluation of Enterococcus faecalis counts in different tapers of rotary system and irrigation fluids: An ex vivo study

2018 ◽  
Vol 15 (3) ◽  
pp. 173 ◽  
Author(s):  
Masoud Khabiri ◽  
AmirArsalan Navabi ◽  
AbbasAli Khademi ◽  
Paridokht Zarean ◽  
Parichehr Zarean
Keyword(s):  
Enterococcus Faecalis ◽  
Comparative Evaluation ◽  
Ex Vivo ◽  
Ex Vivo Study

Mechanical Tests, Metallurgical Characterization, and Shaping Ability of Nickel-Titanium Rotary Instruments: A Multimethod Research

2020 ◽  
Vol 46 (10) ◽  
pp. 1485-1494 ◽  
Author(s):  
Emmanuel J.N.L. Silva ◽  
Jorge N.R. Martins ◽  
Carolina O. Lima ◽  
Victor T.L. Vieira ◽  
Francisco M. Braz Fernandes ◽  
...  
Keyword(s):  
Mechanical Tests ◽  
Nickel Titanium ◽  
Multimethod Research ◽  
Rotary Instruments ◽  
Metallurgical Characterization ◽  
Shaping Ability

scholarly journals Comparative evaluation of shaping ability of two nickel-titanium rotary systems using cone beam computed tomography

2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Berkan Celikten ◽  
Ceren Feriha Uzuntas ◽  
Sebnem Kursun ◽  
Ayse Isil Orhan ◽  
Pelin Tufenkci ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Comparative Evaluation ◽  
Nickel Titanium ◽  
Cone Beam ◽  
Shaping Ability

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

2014 ◽  
Vol 15 (2) ◽  
pp. 174-180 ◽  
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.

scholarly journals The shaping advantage of M-wire compared with conventional nickel-titanium rotary instruments in heavy curvature canal

2020 ◽  
Author(s):  
Mika Tanaka-Sato ◽  
Noriko Mutoh ◽  
Kaori Shimojima ◽  
Nobuyuki Tani-Ishii
Keyword(s):  
Root Canal ◽  
Nickel Titanium ◽  
Canal Wall ◽  
Root Canals ◽  
Rotary Instruments ◽  
The Mean ◽  
Canal Shaping ◽  
Shaping Ability

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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