Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment
ObjectivesThe aim of this study was to evaluate the corrosion resistance of heat-treated (Reciproc and WaveOne) and non-heat-treated (ProTaper and Mtwo) superelastic nickel-titanium endodontic files when immersed in a 5.25% sodium hypochlorite solution.Materials and MethodsAnodic polarization curves...
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Korean Academy of Conservative Dentistry
2021-02-01
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| Series: | Restorative Dentistry & Endodontics |
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| Online Access: | http://rde.ac/upload/pdf/rde-46-e6.pdf |
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| author | Tatiana Dias Costa Elison da Fonseca e Silva Paula Liparini Caetano Marcio José da Silva Campos Leandro Marques Resende André Guimarães Machado Antônio Márcio Resende do Carmo |
| author_facet | Tatiana Dias Costa Elison da Fonseca e Silva Paula Liparini Caetano Marcio José da Silva Campos Leandro Marques Resende André Guimarães Machado Antônio Márcio Resende do Carmo |
| author_sort | Tatiana Dias Costa |
| collection | DOAJ |
| description | ObjectivesThe aim of this study was to evaluate the corrosion resistance of heat-treated (Reciproc and WaveOne) and non-heat-treated (ProTaper and Mtwo) superelastic nickel-titanium endodontic files when immersed in a 5.25% sodium hypochlorite solution.Materials and MethodsAnodic polarization curves were obtained with potential sweeps that began at the open circuit potential or corrosion potential (Ecorr). The pitting potential (Epit) was identified on the anodic polarization curve as the potential at which a sudden increase in current was observed. The micromorphology of the 28 tested files was analyzed before and after the electrochemical assay using scanning electron microscope (SEM). The data were analyzed using 1-way analysis of variance with the post hoc Bonferroni test (for Ecorr) and the Student t-test for independent samples (for Epit).ResultsThe mean Ecorr values were 0.506 V for ProTaper, 0.348 V for Mtwo, 0.542 V for Reciproc, and 0.321 V for WaveOne files. Only WaveOne and Protaper files exhibited pitting corrosion, with Epit values of 0.879 V and 0.904 V, respectively. On the SEM images of the ProTaper and WaveOne files, cavities suggestive of pitting corrosion were detected.ConclusionsSigns of corrosion were observed in both heat-treated and non-heat-treated files. Of the evaluated files, WaveOne (a heat-treated file) and ProTaper (a non-heat-treated file) exhibited the lowest corrosion resistance. |
| format | Article |
| id | doaj-art-e8045d5b57124df5babfa178e1eccf6b |
| institution | Matheson Library |
| issn | 2234-7658 2234-7666 |
| language | English |
| publishDate | 2021-02-01 |
| publisher | Korean Academy of Conservative Dentistry |
| record_format | Article |
| series | Restorative Dentistry & Endodontics |
| spelling | doaj-art-e8045d5b57124df5babfa178e1eccf6b2025-07-03T04:19:22ZengKorean Academy of Conservative DentistryRestorative Dentistry & Endodontics2234-76582234-76662021-02-01461e610.5395/rde.2021.46.e61000Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatmentTatiana Dias Costa0Elison da Fonseca e Silva1Paula Liparini Caetano2Marcio José da Silva Campos3Leandro Marques Resende4André Guimarães Machado5Antônio Márcio Resende do Carmo6Department of Endodontics, Juiz de Fora Estacio University Center, Juiz de Fora, MG, BrazilDepartment of Metallurgical Engineering, Federal Institute Juiz de Fora, Juiz de Fora, MG, BrazilDepartment of Orthodontics, Federal University of Juiz de Fora, Juiz de Fora, MG, BrazilDepartment of Orthodontics, Federal University of Juiz de Fora, Juiz de Fora, MG, BrazilDepartment of Endodontics, Federal University of Juiz de Fora, Juiz de Fora, MG, BrazilDepartment of Endodontics, Juiz de Fora Estacio University Center, Juiz de Fora, MG, BrazilDepartment of Endodontics, Federal University of Juiz de Fora, Juiz de Fora, MG, BrazilObjectivesThe aim of this study was to evaluate the corrosion resistance of heat-treated (Reciproc and WaveOne) and non-heat-treated (ProTaper and Mtwo) superelastic nickel-titanium endodontic files when immersed in a 5.25% sodium hypochlorite solution.Materials and MethodsAnodic polarization curves were obtained with potential sweeps that began at the open circuit potential or corrosion potential (Ecorr). The pitting potential (Epit) was identified on the anodic polarization curve as the potential at which a sudden increase in current was observed. The micromorphology of the 28 tested files was analyzed before and after the electrochemical assay using scanning electron microscope (SEM). The data were analyzed using 1-way analysis of variance with the post hoc Bonferroni test (for Ecorr) and the Student t-test for independent samples (for Epit).ResultsThe mean Ecorr values were 0.506 V for ProTaper, 0.348 V for Mtwo, 0.542 V for Reciproc, and 0.321 V for WaveOne files. Only WaveOne and Protaper files exhibited pitting corrosion, with Epit values of 0.879 V and 0.904 V, respectively. On the SEM images of the ProTaper and WaveOne files, cavities suggestive of pitting corrosion were detected.ConclusionsSigns of corrosion were observed in both heat-treated and non-heat-treated files. Of the evaluated files, WaveOne (a heat-treated file) and ProTaper (a non-heat-treated file) exhibited the lowest corrosion resistance.http://rde.ac/upload/pdf/rde-46-e6.pdfcorrosionendodonticsroot canal |
| spellingShingle | Tatiana Dias Costa Elison da Fonseca e Silva Paula Liparini Caetano Marcio José da Silva Campos Leandro Marques Resende André Guimarães Machado Antônio Márcio Resende do Carmo Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment Restorative Dentistry & Endodontics corrosion endodontics root canal |
| title | Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment |
| title_full | Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment |
| title_fullStr | Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment |
| title_full_unstemmed | Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment |
| title_short | Corrosion resistance assessment of nickel-titanium endodontic files with and without heat treatment |
| title_sort | corrosion resistance assessment of nickel titanium endodontic files with and without heat treatment |
| topic | corrosion endodontics root canal |
| url | http://rde.ac/upload/pdf/rde-46-e6.pdf |
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