TY  - JOUR
AU  - Jovanović-Medojević, Milica
AU  - Dragičević, Aleksandra
AU  - Milanović, Ivana
AU  - Matija, Lidija
AU  - Živković, Slavoljub
PY  - 2023
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/3280
AB  - Intra-canal fracture of rotary NiTi instruments occurs due to torsional stress, cyclic fatigue, or a combination of these two factors. Broken instruments are a serious obstacle to shaping, cleaning, and filling of the root canal and can adversely affect the outcome of endodontic therapy. The aim of this study was to examine the magnetic properties and ultrastructural changes of new, used, and fractured NiTi instruments using opto-magnetic imaging spectroscopy (OMIS). The study included three sets of different types of rotary instruments: MTwo (VDW, Munich, Germany), Pro Taper Universal (Dentsply Maillefer, Ballaigues, Switzerland), and BioRace (FKG DENTAIRE Swiss Dental Products, Le Cret-du-Locle Switzerland). Root canal shaping was performed on root canals with different curvatures, and after intra-canal fracture, in-struments of the same type (new, used, and fractured) were analyzed using OMIS at the Faculty of Mechanical Engineering, University of Belgrade. The obtained results showed a coincidence of peak localization for the used instruments that did not suffer a fracture, as well as for new, unused instruments of all examined groups. Additionally, there was a coincidence of peak intensities for new and fractured instruments in all groups. The specific treatment of electropolishing of the active surface of BioRace instruments caused a completely different electromagnetic response compared to conventional NiTi sets of tested instruments. New, unused BioRace instruments had the most pronounced pos-itive (5.6078 n.a.u. x1000) and negative (-8.5218 n.a.u. x1000) intensity values. The analysis of NiTi instruments using opto-magnetic imaging spectroscopy indicated changes in the magnetic properties after their instrumentation.
PB  - © 2023 Elsevier Ltd
T2  - Journal of the Mechanical Behavior of Biomedical Materials
T1  - Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments
VL  - 141
SP  - 105789
DO  - 10.1016/j.jmbbm.2023.105789
ER  - 

@article{
author = "Jovanović-Medojević, Milica and Dragičević, Aleksandra and Milanović, Ivana and Matija, Lidija and Živković, Slavoljub",
year = "2023",
abstract = "Intra-canal fracture of rotary NiTi instruments occurs due to torsional stress, cyclic fatigue, or a combination of these two factors. Broken instruments are a serious obstacle to shaping, cleaning, and filling of the root canal and can adversely affect the outcome of endodontic therapy. The aim of this study was to examine the magnetic properties and ultrastructural changes of new, used, and fractured NiTi instruments using opto-magnetic imaging spectroscopy (OMIS). The study included three sets of different types of rotary instruments: MTwo (VDW, Munich, Germany), Pro Taper Universal (Dentsply Maillefer, Ballaigues, Switzerland), and BioRace (FKG DENTAIRE Swiss Dental Products, Le Cret-du-Locle Switzerland). Root canal shaping was performed on root canals with different curvatures, and after intra-canal fracture, in-struments of the same type (new, used, and fractured) were analyzed using OMIS at the Faculty of Mechanical Engineering, University of Belgrade. The obtained results showed a coincidence of peak localization for the used instruments that did not suffer a fracture, as well as for new, unused instruments of all examined groups. Additionally, there was a coincidence of peak intensities for new and fractured instruments in all groups. The specific treatment of electropolishing of the active surface of BioRace instruments caused a completely different electromagnetic response compared to conventional NiTi sets of tested instruments. New, unused BioRace instruments had the most pronounced pos-itive (5.6078 n.a.u. x1000) and negative (-8.5218 n.a.u. x1000) intensity values. The analysis of NiTi instruments using opto-magnetic imaging spectroscopy indicated changes in the magnetic properties after their instrumentation.",
publisher = "© 2023 Elsevier Ltd",
journal = "Journal of the Mechanical Behavior of Biomedical Materials",
title = "Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments",
volume = "141",
pages = "105789",
doi = "10.1016/j.jmbbm.2023.105789"
}

Jovanović-Medojević, M., Dragičević, A., Milanović, I., Matija, L.,& Živković, S.. (2023). Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments. in Journal of the Mechanical Behavior of Biomedical Materials
© 2023 Elsevier Ltd., 141, 105789.
https://doi.org/10.1016/j.jmbbm.2023.105789

Jovanović-Medojević M, Dragičević A, Milanović I, Matija L, Živković S. Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments. in Journal of the Mechanical Behavior of Biomedical Materials. 2023;141:105789.
doi:10.1016/j.jmbbm.2023.105789 .

Jovanović-Medojević, Milica, Dragičević, Aleksandra, Milanović, Ivana, Matija, Lidija, Živković, Slavoljub, "Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments" in Journal of the Mechanical Behavior of Biomedical Materials, 141 (2023):105789,
https://doi.org/10.1016/j.jmbbm.2023.105789 . .