Effect of Nickel Titanium Metallurgy and File Design on Torsional Failure, Cyclic Fatigue, and Flexibility
Public Deposited- Last Modified
- March 22, 2019
- Creator
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Brown, Thomas
- Affiliation: School of Dentistry, Department of Endodontics
- Abstract
- The purpose of this study was to evaluate the effect of NiTi metallurgy and file design on: torsional failure resistance, cyclic fatigue resistance, and flexibility. Vortex, Profile, and Mtwo files were each fabricated from superelastic NiTi, M-wire, and Blue Wire. 15 files from each group were used in the torsional failure test, 15 for cyclic fatigue testing, and 10 for flexibility. Results were analyzed to determine the effect of NiTi type on a given file design and file design on a specific type of NiTi. Factorial ANOVA analysis was used followed by a post-hoc test. File design alone had an effect on degrees of rotation to failure during torque testing (p<0.05) while both variables had an effect on all other outcomes (p<0.05). Blue Wire showed increased number of cycles until failure and greater flexibility for all designs. Mtwo had lower peak torque values at failure (p<0.0001) across all NiTi types.
- Date of publication
- May 2013
- DOI
- Resource type
- Rights statement
- In Copyright
- Advisor
- Rivera, Eric M.
- Degree
- Master of Science
- Graduation year
- 2013
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