Opto-magnetic imaging spectroscopy in analyzing rotary NiTi endodontic instruments
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Jovanović-Medojević, MilicaDragičević, Aleksandra
Milanović, Ivana
Matija, Lidija
Živković, Slavoljub
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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 show...ed 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.
Keywords:
NiTi instruments / Fractures of NiTi instruments / OMISSource:
Journal of the Mechanical Behavior of Biomedical Materials, 2023, 141, 105789-Publisher:
- © 2023 Elsevier Ltd
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200105 (University of Belgrade, Faculty of Mechanical Engineering) (RS-MESTD-inst-2020-200105)
Note:
- Presented results are the result of research supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia under Contract 451-03-47/2023–01/200105 from February 3rd, 2023. The research from this article is part of the doctoral dissertation titled Analysis of deformation and fragment breakage of rotary nickel- titanium instruments after preparation of different root canal systems, by Milica Jovanović-Medojević.
DOI: 10.1016/j.jmbbm.2023.105789
ISSN: 1751-6161
WoS: 000970407700001
Scopus: 2-s2.0-85151004625
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Stomatološki fakultetTY - 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 . .