Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Gianluca PlotinoGianluca Gambarini

Abstract

The aim of this study was to investigate the influence of the shape of 3 different artificial canals on the trajectory followed by different nickel-titanium rotary instruments. Ten ProFile and Mtwo instruments, tip sizes 20 and 25, taper .06, were tested in 3 simulated root canals with an angle of curvature of 60 degrees and radius of curvature of 5 mm but with different shapes. Geometric analysis of the trajectory that each instrument followed inside the 3 different artificial canals was performed on digital images, determining 3 parameters: angle and radius of the curvature and the position of the center of the curvature. Mean values were then calculated for each instrument size in all of the artificial canals. Data were analysed using 1-way analysis of variance, Holm t test, and Student t test to determine any statistical difference (P < .05). In all instrument sizes, a statistically significant difference was noted among the artificial canals for the radius and angle of curvature. No statistically significant difference was noted between instruments of the same size for the radius and angle of curvature and the position of the center of the curve when measured in the canal constructed on the dimension of the instruments. Di...Continue Reading

References

Jul 14, 2005·International Endodontic Journal·B PengT J Xia
Oct 13, 2005·International Endodontic Journal·G S P CheungB W Darvell
Oct 24, 2006·Journal of Endodontics·Peter Parashos, Harold H Messer
Jan 11, 2007·International Endodontic Journal·G PlotinoF Somma
Apr 13, 2007·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Spiros ZinelisGeorge D Papadimitriou
May 22, 2007·International Endodontic Journal·G S P Cheung, B W Darvell
Nov 7, 2009·International Endodontic Journal·G PlotinoG Gambarini

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Citations

Jun 1, 2012·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Gianluca PlotinoGianluca Gambarini
Aug 24, 2010·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Hélio P LopesJosé F Siqueira
Mar 21, 2012·International Endodontic Journal·G GambariniD Al Sudani
Mar 30, 2011·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Hélio Pereira LopesBianca Esther Cabral Chiesa
Nov 14, 2014·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Olli-Pekka LappalainenGeorge K Sándor
Jul 4, 2019·International Endodontic Journal·M HülsmannE Schäfer
Sep 12, 2019·International Endodontic Journal·Michael Hülsmann
Jan 25, 2012·International Endodontic Journal·G PlotinoG Gambarini
Dec 28, 2019·Journal of Clinical Medicine·Álvaro Zubizarreta-MachoÓscar Alonso-Ezpeleta
Dec 5, 2019·Restorative Dentistry & Endodontics·Hadeer Mostafa El FekyMarwa Mahmoud Ali Bedier

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