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Year : 2017  |  Volume : 29  |  Issue : 1  |  Page : 53-59

To evaluate and compare canal transportation, canal-centering ability, and vertical root fracture resistance of teeth prepared with three different rotary file systems: An in vitro study

Department of Conservative Dentistry and Endodontics, SGT University, Gurgaon, Haryana, India

Correspondence Address:
Gargi Mitra
Sector B, Pocket 5 and 6, 4567, Vasant Kunj, New Delhi - 110 070
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/endo.endo_33_17

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Aim: The aim of the study was to determine the file system with best canal-centering ability (CA) and least canal transportation (CT) and which provides maximum resistance to vertical root fracture (VRF). Materials and Methods: Forty mesiobuccal roots of extracted maxillary molars were randomly divided into three experimental groups and one control group, with ten samples in each group. Group 1 samples were prepared with ProTaper file system, Group 2 samples were prepared with WaveOne single-file system, Group 3 samples were prepared with self-adjusting file (SAF) system, and Group 4 had no instrumentation. Pre- and post-instrumentation cone-beam computed tomography scans were done. CT and CA were evaluated at 3 mm, 6 mm, and 9 mm. Samples were subjected to load under Instron universal testing machine to determine VRF resistance. Data were analyzed using statistical analysis. Results: There was no statistical significance for CT, CA, and VRF resistance at all the three levels among the three groups; however, SAF system showed least CT and was more centered. Conclusion: SAFs produce less CT and more centered preparation compared to ProTaper file system and WaveOne file system.

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