Journal of Research and Advancement in Dentistry
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Official publication of Magadh University and Kolhan University, Government of Bihar and Jharkhand, India
Year : 2024
Volume : Volume 16
Issue : Issue 5
Address for correspondence :
Aparajita Rakesh
arakesh242@gmail.com
Background: Nickel–titanium (NiTi) files have drastically improved endodontic treatment. Cyclic fatigue occurs as a consequence of repeated cycles of tensile-compression stress. The study aimed to compare the Cyclic Fatigue Resistance of ProTaper Gold (PTG), Neo Endo Flex, and HyFlex CM, using a cyclic fatigue testing device. Materials and Methods: Three NiTi rotary systems, ProTaper Gold, Neo Endo Flex, and HyFlex CM, were selected and divided into three groups containing six files each of 4% taper, #25 size, and 21 mm. A custom-made model with brass was fabricated with a single curve of 5 mm radius and 60° curvature. Cyclic fatigue resistance was evaluated through a static model in a customized device specifically created for this purpose. Results: HyFlex CM and Neo Endo Flex both have greater cyclic fatigue resistance than PTG, which has the least cyclic fatigue resistance. Conclusion: Neo-Endo Flex and HyFlex CM NiTi files have higher cyclic fatigue resistance than PTG, and no significant difference between the cyclic fatigue resistance of Neo Endo Flex and HyFlex CM.
