Home  ›  Milestone Education Nic Rc Blue Root Canal File

Milestone Education Nic Rc Blue Root Canal File

Written By Thursday, 7 July 2022 Add Comment Edit

Secondary Root Canal Treatment with Reciproc Blue and K-File: Radiographic and ESEM-EDX Analysis of Dentin and Root Canal Filling Remnants

Affiliations

  • PMID: 32570806
  • PMCID: PMC7355850
  • DOI: 10.3390/jcm9061902

Free PMC article

Secondary Root Canal Treatment with Reciproc Blue and K-File: Radiographic and ESEM-EDX Analysis of Dentin and Root Canal Filling Remnants

Carlo Prati  et al. J Clin Med. .

Free PMC article

Abstract

Secondary root canal treatment requires the complete removal of filling materials with different chemical-physical properties. A newly developed single-use NiTi instrument (Reciproc Blue, RB) may be more effective in root canal retreatment. The aim of the present study was to evaluate morphology and composition of remnants after retreatment with RB compared to traditional K-File technique, in canals obturated with Thermafil/AH Plus. Twenty-four single-rooted human teeth were shaped with NiTi obturated with AH-Plus/Thermafil and retreated using RB NiTi instruments or manual K-Files. Radiographs were taken to evaluate endodontic space and radiopacity of residual filling-material before/after procedures. After retreatment, samples were longitudinally split and observed by environmental scanning electron microscopy connected to energy dispersive X-Ray spectroscopy (ESEM-EDX) to analyze the debris/remnant position, microchemistry, and dentinal surface morphology. Time for retreatments was recorded and compared using one-way ANOVA (p-value = 0.05). Radiopaque filling residuals were found in both groups. RB system resulted statistically faster than manual K-File in retreatment procedure (p < 0.001). Root canal space radiographic appearance obtained after retreatment with RB was wider than K-File (p < 0.05). ESEM-EDX revealed 4 different morphological dentin area. Area-1: debris-free with typical Ca, P, and N composition of dentin and detected in 70% of the surface. Area-2: presence of deproteinized smear layer free from N and debris in 15% of the surface. Area-3: a thick packed smear layer N-free and with fine debris consisting of trace elements from sealer in 10% of the surface. Area-4: packed with debris and trace elements. No difference was observed between both instruments regarding root canal space appearance and ESEM-EDX analysis. Both systems were able to remove filling material but created a dentine morphology composed of packed debris and filling materials embedded into the smear layer. Dentin surface composition resulted in collagen depleted by irrigation procedures. The reciprocating system required less time to complete retreatment.

Keywords: ESEM-EDX; K-file; NiTi instruments; Reciproc Blue; periapical X-Ray; retreatment.

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1

Plastic custom container to fit root sample during treatment and retreatment procedure. The system was used to simulate clinical condition and allow periapical radiographies.

Figure 2
Figure 2

Retreatment working time. Manual technique required statistically significant more time than RB. In both techniques the clinical parameter to step the retreatment procedure was the absence of debris from instrument removed from root canals.

Figure 3
Figure 3

EDX spectra of sealer and carrier used in the present study.

Figure 4
Figure 4

Dentine areas identified on root canal walls of secondary root canal treatments performed in the present study. The presence of specific elements inside the composition of sealer or gutta-percha (i.e., Zr, W, Zn etc.) was used as trace element to confirm the remnant presence (i.e., sealer or gutta-percha, or dentin smear layer).

Figure 5
Figure 5

ESEM-EDX analysis at 100× magnification performed at the coronal medium and apical third of root retreated using a RB instrumentation. Coronal third revealed some areas filled with high electron dense remnants. Medium and apical third presented few debris, dentin smear layer (Ca and P) and some open and clean (no smear plugs) dentinal tubules. EDX analysis performed at 3000× magnifications on one area with electron dense remnants located at the coronal thread revealed a higher presence of Zn, Zr, and W, attributable to sealer and gutta-percha. Similarly, EDX at 3000× magnifications in one area located at the medium third with fewer electron dense debris revealed reduced presence of elements attributable to sealer (W). EDX at one area at the apical third revealed a high concentration of smear layer, with higher presence of Ca and P and low presence elements attributable to the sealers (W). Interestingly, traces of Ti were identified in correspondence of some areas with high electron dense remnants, which may be attributable to recurrent instrumentation (over instrumentation) of RB files in those sites.

Figure 6
Figure 6

ESEM-EDX analysis at 100× magnifications performed at the coronal medium and apical third of root retreated using a manual instrumentation technique. Both coronal and medium third revealed few filling debris. Differently, apical third presented a higher presence of filling debris (evidenced as highly electron-dense deposits). EDX at 3000× on dentin areas free from filling deposits showed a limited presence of W, attributable to the sealer.

Similar articles

  • Evaluation of apically extruded debris during root canal retreatment with several NiTi systems.

    Dincer AN, Er O, Canakci BC. Dincer AN, et al. Int Endod J. 2015 Dec;48(12):1194-8. doi: 10.1111/iej.12425. Epub 2015 Jan 19. Int Endod J. 2015. PMID: 25557631

  • The Comparative Efficacy of Different Files in The Removal of Different Sealers in Simulated Root Canal Retreatment- An In-vitro Study.

    Kanaparthy A, Kanaparthy R. Kanaparthy A, et al. J Clin Diagn Res. 2016 May;10(5):ZC130-3. doi: 10.7860/JCDR/2016/17731.7845. Epub 2016 May 1. J Clin Diagn Res. 2016. PMID: 27437347 Free PMC article.

  • Efficiency and apical extrusion of debris: a comparative ex vivo study of four retreatment techniques in severely curved root canals.

    Kaşıkçı Bilgi I, Köseler I, Güneri P, Hülsmann M, Çalışkan MK. Kaşıkçı Bilgi I, et al. Int Endod J. 2017 Sep;50(9):910-918. doi: 10.1111/iej.12708. Epub 2016 Oct 28. Int Endod J. 2017. PMID: 27706822

  • Influence of File Motion on Shaping, Apical Debris Extrusion and Dentinal Defects: A Critical Review.

    Pedrinha VF, Brandão JMDS, Pessoa OF, Rodrigues PA. Pedrinha VF, et al. Open Dent J. 2018 Feb 28;12:189-201. doi: 10.2174/1874210601812010189. eCollection 2018. Open Dent J. 2018. PMID: 29541265 Free PMC article. Review.

  • Critical analysis of research methods and experimental models to study removal of root filling materials.

    Ajina MA, Shah PK, Chong BS. Ajina MA, et al. Int Endod J. 2022 Mar;55 Suppl 1:119-152. doi: 10.1111/iej.13650. Epub 2021 Nov 8. Int Endod J. 2022. PMID: 34674279 Review.

Cited by 2 articles

  • Influence of Different Fibreglass Post Geometries on the Stress Distribution and Pull-Out Bond Strength Before and After Mechanical Cycling.

    Delgaudio Pignataro RR, Samico RP, Mendes Campaner L, Bottino MA, Borges A, Tribst JP. Delgaudio Pignataro RR, et al. Eur Endod J. 2021 Apr 13;6(2):170-6. doi: 10.14744/eej.2020.95967. Online ahead of print. Eur Endod J. 2021. PMID: 34047296 Free PMC article.

  • Comparative Analysis of Root Canal Filling Debris and Smear Layer Removal Efficacy Using Various Root Canal Activation Systems during Endodontic Retreatment.

    Park SY, Kang MK, Choi HW, Shon WJ. Park SY, et al. Medicina (Kaunas). 2020 Nov 16;56(11):615. doi: 10.3390/medicina56110615. Medicina (Kaunas). 2020. PMID: 33207656 Free PMC article.

References

    1. Gorni F., Gagliani M. The outcome of endodontic retreatment: A 2-year follow-up. J. Endod. 2004;30:1–4. doi: 10.1097/00004770-200401000-00001. - DOI - PubMed
    1. Ricucci D., Rocas I.N., Alves F.R.F., Loghin S., Siqueira J.F., Jr. Apically extruded sealers: Fate and influence on treatment outcome. J. Endod. 2016;42:243–249. doi: 10.1016/j.joen.2015.11.020. - DOI - PubMed
    1. Nair P.N.R. On the causes of persistent apical periodontitis: A review. Int. Endod. J. 2006;39:249–281. doi: 10.1111/j.1365-2591.2006.01099.x. - DOI - PubMed
    1. Ng Y.-L., Mann V., Gulabivala K. Outcome of secondary root canal treatment: A systematic review of the literature. Int. Endod. J. 2008;41:1026–1046. doi: 10.1111/j.1365-2591.2008.01484.x. - DOI - PubMed
    1. Torabinejad M., Corr R., Handysides R., Shabahang S. Outcomes of nonsurgical retreatment and endodontic surgery: A systematic review. J. Endod. 2009;35:930–937. doi: 10.1016/j.joen.2009.04.023. - DOI - PubMed

LinkOut - more resources

  • Full Text Sources

    • Europe PubMed Central
    • Multidisciplinary Digital Publishing Institute (MDPI)
    • PubMed Central

barberprongling1995.blogspot.com

Source: https://pubmed.ncbi.nlm.nih.gov/32570806/

0 Response to "Milestone Education Nic Rc Blue Root Canal File"

Post a Comment

Subscribe to: Post Comments (Atom)

Iklan Atas Artikel

Iklan Tengah Artikel 1

Iklan Tengah Artikel 2

Iklan Bawah Artikel