Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study
Abstract Background The fracture of an endodontic instrument within the root canal system can occur during root canal therapy, complicating thorough cleaning and shaping. Consequently, managing the broken fragment becomes crucial. Methods Eighty Nickel-titanium (NiTi) #20 K-files (Mani, Tochigi, Jap...
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2025-01-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-024-05370-8 |
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| author | Nasim Hashemi Mohsen Aminsobhani Mohammad Javad Kharazifard Fatemeh Hamidzadeh Pegah Sarraf |
| author_facet | Nasim Hashemi Mohsen Aminsobhani Mohammad Javad Kharazifard Fatemeh Hamidzadeh Pegah Sarraf |
| author_sort | Nasim Hashemi |
| collection | DOAJ |
| description | Abstract Background The fracture of an endodontic instrument within the root canal system can occur during root canal therapy, complicating thorough cleaning and shaping. Consequently, managing the broken fragment becomes crucial. Methods Eighty Nickel-titanium (NiTi) #20 K-files (Mani, Tochigi, Japan) were cut 8 mm from the tip, fixed into a corkboard, and classified into five groups (n = 14 each). The microtube-based methods included: microtube with cyanoacrylate glue (group 1), light-cured flowable composite resin (group 2), wire (group 3), internal shaft (group 4), and laser (group 5). Each method grasped the separated instrument's free end above the corkboard, and a pull-out test was performed using a universal testing machine(UTM). Additionally, 10 samples were separated in extracted canine root canals, and the temperature of the outer surface of the root was measured using the microtube and laser methods. Results Groups 1 and 4 exhibited significantly greater pull-out force compared to the other groups (p < 0.001). Groups 2 and 5 demonstrated significantly lower pull-out forces (p < 0.001). In Group 5, the temperature increase was 11 °C on the tube surface and 3 °C on the root surface. Conclusion All microtube-based techniques are effective for fractured instrument removal, with cyanoacrylate glue and laser methods being particularly suitable for cases that require higher force. |
| format | Article |
| id | doaj-art-a66039b8ba9e4ba4b421deb9c0d7bd83 |
| institution | Kabale University |
| issn | 1472-6831 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
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| series | BMC Oral Health |
| spelling | doaj-art-a66039b8ba9e4ba4b421deb9c0d7bd832025-01-05T12:48:16ZengBMCBMC Oral Health1472-68312025-01-012511910.1186/s12903-024-05370-8Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro studyNasim Hashemi0Mohsen Aminsobhani1Mohammad Javad Kharazifard2Fatemeh Hamidzadeh3Pegah Sarraf4Department of Endodontics, School of Dentistry, Tehran University of Medical SciencesDepartment of Endodontics, School of Dentistry, Tehran University of Medical SciencesDental Research Center, Dentistry Research, Tehran University of Medical SciencesDepartment of Endodontics, School of Dentistry, Tehran University of Medical SciencesDepartment of Endodontics, School of Dentistry, Tehran University of Medical SciencesAbstract Background The fracture of an endodontic instrument within the root canal system can occur during root canal therapy, complicating thorough cleaning and shaping. Consequently, managing the broken fragment becomes crucial. Methods Eighty Nickel-titanium (NiTi) #20 K-files (Mani, Tochigi, Japan) were cut 8 mm from the tip, fixed into a corkboard, and classified into five groups (n = 14 each). The microtube-based methods included: microtube with cyanoacrylate glue (group 1), light-cured flowable composite resin (group 2), wire (group 3), internal shaft (group 4), and laser (group 5). Each method grasped the separated instrument's free end above the corkboard, and a pull-out test was performed using a universal testing machine(UTM). Additionally, 10 samples were separated in extracted canine root canals, and the temperature of the outer surface of the root was measured using the microtube and laser methods. Results Groups 1 and 4 exhibited significantly greater pull-out force compared to the other groups (p < 0.001). Groups 2 and 5 demonstrated significantly lower pull-out forces (p < 0.001). In Group 5, the temperature increase was 11 °C on the tube surface and 3 °C on the root surface. Conclusion All microtube-based techniques are effective for fractured instrument removal, with cyanoacrylate glue and laser methods being particularly suitable for cases that require higher force.https://doi.org/10.1186/s12903-024-05370-8Adhesive forceCyanoacrylateInstrument removalLaser weldingPull outSeparated file |
| spellingShingle | Nasim Hashemi Mohsen Aminsobhani Mohammad Javad Kharazifard Fatemeh Hamidzadeh Pegah Sarraf Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study BMC Oral Health Adhesive force Cyanoacrylate Instrument removal Laser welding Pull out Separated file |
| title | Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study |
| title_full | Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study |
| title_fullStr | Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study |
| title_full_unstemmed | Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study |
| title_short | Comparison of the pull-out force of different microtube-based methods in fractured endodontic instrument removal: An in-vitro study |
| title_sort | comparison of the pull out force of different microtube based methods in fractured endodontic instrument removal an in vitro study |
| topic | Adhesive force Cyanoacrylate Instrument removal Laser welding Pull out Separated file |
| url | https://doi.org/10.1186/s12903-024-05370-8 |
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