Volume 25, Issue 115, September 2021

Evaluation of cyclic fatigue resistance of four heat-treated nickel-titanium single file systems in canals with single curvature - An in-vitro study

Mohammad Daher Altufayli¹, Basem Salem², Imad Katbeh³, Pierre Georges^4♦, Roua Kamel Moualla⁵

¹Master student, Faculty of Dentistry, Department of Operative and Endodontic, Tishreen University, Latakia, Syria; ORCID: 0000-0001-9463- 8416
²Associate professor, Faculty of Dentistry, Department of Operative and Endodontic, Tishreen University, Latakia, Syria; ORCID: 0000-0002-9440- 2873
³Assistant Professor, Medical Institute, Department of Pediatric Dentistry and Orthodontics, People’s Friendship University of Russia, (RUDN) Miklukho-Maklaya Street 10/2, Moscow, Russia
⁴Resident student, Medical Institute, Department of Pediatric Dentistry and Orthodontics, People’s Friendship University of Russia, (RUDN) Miklukho-Maklaya Street 10/2, Moscow, Russia
⁵Master Student, Faculty of Dentistry, Department of Operative and Endodontic Tishreen University, Lattakia, Syria; ORCID: 0000-0002-1340- 0930

^♦Corresponding author
Resident student, Medical Institute, Department of Pediatric Dentistry and Orthodontics, People’s Friendship University of Russia, (RUDN) Miklukho-Maklaya Street 10/2, Moscow, Russia;

ABSTRACT

The anatomy of root canal system has a complex variation, so it is important to have a flexible system that would require minimal preparation of the canal. Nickel-titanium (NiTi) instruments can be separated and broken without previous warning during the root canal preparation, and this separation has been a problem. However endodontic instruments are unable to achieve a complete clean to the root canal system because of many high variability of root canal system complex anatomy , the endodontic instruments which are chosen for root canal preparation play a critical role in accomplishing the main goal for obturation and for the prevention of ledging, zipping ,root canal transportation, file separation, and save the root canal original shape, NiTi instruments properties of memory shape, super elasticity, and resistance to torsional and cyclic fatigue are advantages to their use in preparation of the curved root canal. This study aims to compare the cyclic fatigue resistance of four heat treated nickel–titanium single file systems in Reciprocation movement and rotary movement in curved canals.

Keywords: Cyclic fatigue resistance; reciprocation motion; nickel-titanium rotary system.

Medical Science, 2021, 25(115), 2275-2280

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