Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments
To evaluate the effect of simultaneous liquid or gel sodium hypochlorite (NaOCl) irrigation on cyclic fatigue of F6 SkyTaper (F6ST) and OneCurve (OC) single files, 180 new 25/0.06 F6ST and OC files were divided into 6 groups (<i>n</i> = 15) for each brand. Groups 1 and 4 included new ins...
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MDPI AG
2020-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/19/6666 |
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| author | Eugenio Pedullà Giusy Rita Maria La Rosa Marco Sesto Albani Gaetano Isola Taha Özyürek Luigi Generali |
| author_facet | Eugenio Pedullà Giusy Rita Maria La Rosa Marco Sesto Albani Gaetano Isola Taha Özyürek Luigi Generali |
| author_sort | Eugenio Pedullà |
| collection | DOAJ |
| description | To evaluate the effect of simultaneous liquid or gel sodium hypochlorite (NaOCl) irrigation on cyclic fatigue of F6 SkyTaper (F6ST) and OneCurve (OC) single files, 180 new 25/0.06 F6ST and OC files were divided into 6 groups (<i>n</i> = 15) for each brand. Groups 1 and 4 included new instruments not exposed to NaOCl at 20 °C and 37 °C, respectively. Groups 2 and 5 included files activated with liquid NaOCl at 20 °C and 37 °C, respectively. Groups 3 and 6 consisted of instruments tested with NaOCl gel at 20 °C and 37 °C, respectively. Instruments were subjected to a fatigue test using a novel customized device. Data were expressed as time to fracture (TtF) and statistically analyzed (<i>p</i> < 0.05) after checking their normality through the Shapiro–Wilk test. Because they were normally distributed, 2-way analyses of variance (ANOVA) and the Tukey multiple comparison post-hoc test were used. Time to fracture of all tested instruments decreased at 37 °C (<i>p</i> < 0.05). At 20 °C, NaOCl improved TtF of F6ST and OC (<i>p</i> < 0.05). NaOCl liquid increased TtF of F6ST (<i>p</i> < 0.05) in comparison with gel, while there was no difference between the two formulations for OC. At 37 °C, both NaOCl formulations had no significant influence on TtF for F6ST, while they increased TtF of OC (<i>p</i> < 0.05). NaOCl improved the cyclic fatigue resistance of OC, independently of the temperature, while for F6ST the negative impact of higher temperature reduced the irrigant benefits. |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T16:05:44Z |
| publishDate | 2020-09-01 |
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| series | Applied Sciences |
| spelling | doaj.art-7e6c5182ebda4b5cb8bf51cce3dfa4372023-11-20T14:52:37ZengMDPI AGApplied Sciences2076-34172020-09-011019666610.3390/app10196666Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium InstrumentsEugenio Pedullà0Giusy Rita Maria La Rosa1Marco Sesto Albani2Gaetano Isola3Taha Özyürek4Luigi Generali5Department of General Surgery and Medical-Surgical Specialties, University of Catania, 95124 Catania, ItalyDepartment of General Surgery and Medical-Surgical Specialties, University of Catania, 95124 Catania, ItalyDepartment of General Surgery and Medical-Surgical Specialties, University of Catania, 95124 Catania, ItalyDepartment of General Surgery and Medical-Surgical Specialties, University of Catania, 95124 Catania, ItalyDepartment of Endodontics, Faculty of Dentistry, Istanbul Medeniyet University, 34720 Istanbul, TurkeyEndodontic Section, Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), School of Dentistry, University of Modena and Reggio Emilia, 41124 Modena, ItalyTo evaluate the effect of simultaneous liquid or gel sodium hypochlorite (NaOCl) irrigation on cyclic fatigue of F6 SkyTaper (F6ST) and OneCurve (OC) single files, 180 new 25/0.06 F6ST and OC files were divided into 6 groups (<i>n</i> = 15) for each brand. Groups 1 and 4 included new instruments not exposed to NaOCl at 20 °C and 37 °C, respectively. Groups 2 and 5 included files activated with liquid NaOCl at 20 °C and 37 °C, respectively. Groups 3 and 6 consisted of instruments tested with NaOCl gel at 20 °C and 37 °C, respectively. Instruments were subjected to a fatigue test using a novel customized device. Data were expressed as time to fracture (TtF) and statistically analyzed (<i>p</i> < 0.05) after checking their normality through the Shapiro–Wilk test. Because they were normally distributed, 2-way analyses of variance (ANOVA) and the Tukey multiple comparison post-hoc test were used. Time to fracture of all tested instruments decreased at 37 °C (<i>p</i> < 0.05). At 20 °C, NaOCl improved TtF of F6ST and OC (<i>p</i> < 0.05). NaOCl liquid increased TtF of F6ST (<i>p</i> < 0.05) in comparison with gel, while there was no difference between the two formulations for OC. At 37 °C, both NaOCl formulations had no significant influence on TtF for F6ST, while they increased TtF of OC (<i>p</i> < 0.05). NaOCl improved the cyclic fatigue resistance of OC, independently of the temperature, while for F6ST the negative impact of higher temperature reduced the irrigant benefits.https://www.mdpi.com/2076-3417/10/19/6666cyclic fatigue resistanceF6 SkyTapergelOneCurvesodium hypochloritetemperature |
| spellingShingle | Eugenio Pedullà Giusy Rita Maria La Rosa Marco Sesto Albani Gaetano Isola Taha Özyürek Luigi Generali Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments Applied Sciences cyclic fatigue resistance F6 SkyTaper gel OneCurve sodium hypochlorite temperature |
| title | Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments |
| title_full | Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments |
| title_fullStr | Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments |
| title_full_unstemmed | Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments |
| title_short | Effects of Simultaneous Liquid or Gel Sodium Hypochlorite Irrigation on the Cyclic Fatigue of Two Single-File Nickel-Titanium Instruments |
| title_sort | effects of simultaneous liquid or gel sodium hypochlorite irrigation on the cyclic fatigue of two single file nickel titanium instruments |
| topic | cyclic fatigue resistance F6 SkyTaper gel OneCurve sodium hypochlorite temperature |
| url | https://www.mdpi.com/2076-3417/10/19/6666 |
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