e-ISSN 2459-1726
Comparison of the Cyclic Fatigue Resistances of Reciproc Blue and Rotate Instruments in Simulated Severe Apical Curvature [Turk Endod J]
Turk Endod J. Ahead of Print: TEJ-33042 | DOI: 10.14744/TEJ.2021.33042

Comparison of the Cyclic Fatigue Resistances of Reciproc Blue and Rotate Instruments in Simulated Severe Apical Curvature

Özgür Soysal Özdemir1, Defne Toplu2
1Department Of Endodontics, Lokman Hekim University Faculty Of Dentistry. Ankara. Turkey
2Department Of Endodontics, Ondokuz Mayis University Faculty Of Dentistry, Samsun, Turkey

Aim: The aim of this study was to evaluate the cyclic fatigue resistance of Reciproc Blue (VDW, Munich, Germany) and Rotate (VDW, Munich, Germany) by testing in a severe apical curvature at intracanal temperature.

Methodology: Twelve Reciproc Blue (25.08) and Rotate (25.06) instruments were tested in a cyclic fatigue device at intracanal temperature (37°C). The instruments were tested in a stainless-steel block with an artificial canal with curvature angle of 90° and radius of curvature of 2 mm. The instruments were operated until fracture occurred, then the time for fracture (TF) was calculated. The length of fractured tips was measured with a digital caliper. The data were analyzed using Student’s t-tests with significance level set at P < 0.05.

Results: The TF values Reciproc Blue (450.60 ± 34.36 s) were significantly higher than Rotate (315.70 ± 70.89 s) (P < 0.05). There was no significant difference between the instruments regarding the length of fractured fragments (Reciproc Blue: 3.11 ± 0.25 mm, Rotate: 2.97 ± 0.27 mm, (P > 0.05)).

Conclusion: Reciproc Blue displayed significantly higher cyclic fatigue resistance values than Rotate files when tested in the artificial canal with acute apical curvature

Keywords: cyclic fatigue, endodontics, Reciproc Blue



Corresponding Author: Özgür Soysal Özdemir, Türkiye
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