دورية أكاديمية
Microstructural, microchemical, and mechanical changes associated with the clinical reuse of two nickel-titanium endodontic instruments.
| العنوان: | Microstructural, microchemical, and mechanical changes associated with the clinical reuse of two nickel-titanium endodontic instruments. |
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| المؤلفون: | Restrepo-Restrepo FA; Department of Integrated Basic Studies, Laboratory of Immunodetection and Bioanalysis, Faculty of Dentistry, University of Antioquia, Medellin, Colombia., Holguín-Vásquez VA; Department of Integrated Basic Studies, Laboratory of Immunodetection and Bioanalysis, Faculty of Dentistry, University of Antioquia, Medellin, Colombia., Cañas-Jiménez SJ; Department of Integrated Basic Studies, Laboratory of Immunodetection and Bioanalysis, Faculty of Dentistry, University of Antioquia, Medellin, Colombia., Villa-Machado PA; Department of Integrated Basic Studies, Laboratory of Immunodetection and Bioanalysis, Faculty of Dentistry, University of Antioquia, Medellin, Colombia., Ochoa-Soto S; Biomaterials Research Group, Bioengineering Program, Engineering Faculty, University of Antioquia, Medellin, Colombia., Ossa-Orozco CP; Biomaterials Research Group, Bioengineering Program, Engineering Faculty, University of Antioquia, Medellin, Colombia., Tobón-Arroyave SI; Department of Integrated Basic Studies, Laboratory of Immunodetection and Bioanalysis, Faculty of Dentistry, University of Antioquia, Medellin, Colombia. |
| المصدر: | Dental research journal [Dent Res J (Isfahan)] 2021 Jun 22; Vol. 18, pp. 48. Date of Electronic Publication: 2021 Jun 22 (Print Publication: 2021). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Medknow Country of Publication: Iran NLM ID: 101471186 Publication Model: eCollection Cited Medium: Print ISSN: 1735-3327 (Print) Linking ISSN: 17353327 NLM ISO Abbreviation: Dent Res J (Isfahan) Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: Mumbai : Medknow Original Publication: Isfahan, Iran : Isfahan University of Medical Sciences, School of Dentistry, Torabinejad Dental Research Center |
| مستخلص: | Background: Nickel-titanium (NiTi) instruments have represented a great technological development that enabled endodontists conforming irregular-shaped root canals. Notwithstanding, the repeated use of these instruments may lead to the fracture without any prior visible warning signs. This study aimed to evaluate how multiple clinical instrumentation/sterilization cycles of two NiTi mechanized instruments can affect their microstructural, microchemical, and mechanical characteristics. Materials and Methods: In this observational descriptive study, a total of 140 NiTi instruments, 70 ProTaper Gold ® (PTG) and 70 WaveOne Gold ® (WOG) were analyzed. For each brand system, instruments were evaluated in the as-received condition ( n = 10) and after one ( n = 20), two ( n = 20), and three ( n = 20) instrumentation/sterilization cycles. Intraoperative instrumentation parameters were recorded for all used instruments. Afterward, the files were examined using scanning electron microscopy and energy-dispersive X-ray microanalysis. All of the instruments were tensile-fatigue tested until rupture in order to calculate the mechanical tensile strength and the maximum elongation percentage for the samples. Statistical analysis was completed using Chi-square, Kruskal-Wallis H -, or Mann-Whitney U -tests with a statistical significance set at P < 0.05. Results: Significant increasing changes in surface topography ( P < 0.05, Chi-square test) and chemical composition ( P < 0.05, Kruskal-Wallis H -test) in both brand systems through instrumentation/sterilization cycles were detected. In addition, values of mechanical tensile strength and maximum elongation percentage increased significantly through instrumentation/sterilization cycles in the PTG group, whereas only the median values of mechanical tensile strength increased significantly in the WOG group (all P < 0.01, Kruskal-Wallis H -test). Conclusion: Although multiple instrumentation/sterilization cycles may render NiTi instruments more flexible and fatigue resistant, the significant changes detected in their surface topography and chemical composition should preclude their repeated clinical use in the routine endodontic practice as prevention for breakage. Competing Interests: The authors of this manuscript declare that they have no conflicts of interest, real or perceived, financial or non-financial in this article. (Copyright: © 2021 Dental Research Journal.) |
| References: | J Appl Oral Sci. 2013 Nov-Dec;21(6):505-10. (PMID: 24473715) J Endod. 2003 Oct;29(10):667-9. (PMID: 14606793) J Endod. 2010 Jan;36(1):147-52. (PMID: 20003955) J Endod. 2002 Nov;28(11):765-9. (PMID: 12470021) Microsc Res Tech. 2019 Jul;82(7):1157-1164. (PMID: 30916441) J Endod. 2012 Nov;38(11):1535-40. (PMID: 23063231) Int Endod J. 2004 Dec;37(12):832-9. (PMID: 15548274) Int Endod J. 2003 Nov;36(11):724-32. (PMID: 14641435) Dent Mater. 2013 Dec;29(12):e318-24. (PMID: 24183054) Int Endod J. 2014 Dec;47(12):1160-7. (PMID: 24697405) Int Endod J. 2006 Sep;39(9):693-9. (PMID: 16916358) J Clin Pediatr Dent. 2016;40(2):141-6. (PMID: 26950816) Int Endod J. 2019 Oct;52(10):1427-1445. (PMID: 31267579) Int Endod J. 2012 Feb;45(2):113-28. (PMID: 21902705) J Endod. 2012 Apr;38(4):527-30. (PMID: 22414843) J Oral Sci. 2016;58(3):401-6. (PMID: 27665980) Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005 Aug;100(2):249-55. (PMID: 16037784) J Endod. 2012 Jan;38(1):105-7. (PMID: 22152631) Int Endod J. 2001 Jul;34(5):386-9. (PMID: 11482722) Int Endod J. 2008 Feb;41(2):163-72. (PMID: 18005043) J Endod. 2003 Oct;29(10):664-6. (PMID: 14606792) Med Oral Patol Oral Cir Bucal. 2010 Jul 01;15(4):e658-62. (PMID: 20038892) Int Endod J. 2014 Jun;47(6):514-9. (PMID: 23992374) J Dent (Tehran). 2015 Sep;12(9):636-46. (PMID: 27148374) J Endod. 2013 Feb;39(2):163-72. (PMID: 23321225) Scanning. 2014 Sep-Oct;36(5):517-25. (PMID: 25042083) Biomed Mater Eng. 1992 Summer;2(2):51-69. (PMID: 1472908) Restor Dent Endod. 2013 Nov;38(4):222-6. (PMID: 24303357) Int Endod J. 2010 Feb;43(2):125-34. (PMID: 20078701) J Endod. 2008 Jan;34(1):53-5. (PMID: 18155492) J Endod. 2008 Jul;34(7):859-62. (PMID: 18570996) J Oral Rehabil. 1983 Mar;10(2):121-8. (PMID: 6573461) J Endod. 2017 Nov;43(11):1872-1877. (PMID: 28951028) Dent Mater J. 2014;33(1):27-31. (PMID: 24492108) Dent Mater. 2008 Jun;24(6):753-9. (PMID: 17996288) Braz Dent J. 2008;19(2):109-13. (PMID: 18568223) J Endod. 2016 Feb;42(2):186-9. (PMID: 26654140) Int Endod J. 2006 Sep;39(9):700-8. (PMID: 16916359) Int Endod J. 2012 Dec;45(12):1148-55. (PMID: 22757632) Int Endod J. 2006 Sep;39(9):709-15. (PMID: 16916360) Braz Dent J. 2008;19(2):114-8. (PMID: 18568224) Int Endod J. 2000 May;33(3):204-7. (PMID: 11307436) Int Endod J. 2016 Nov;49(11):1073-1078. (PMID: 26426295) Int Endod J. 2018 Jan;51(1):112-117. (PMID: 28218957) |
| فهرسة مساهمة: | Keywords: Electron probe microanalysis; endodontics; instrumentation; scanning electron microscopy; tensile strength |
| تواريخ الأحداث: | Date Created: 20210825 Latest Revision: 20220426 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC8351959 |
| PMID: | 34429868 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1735-3327 |
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