Defectos superficiales de las limas mecanizadas después de la  instrumentación de conductos curvos

Diana Carolina Ortiz Coba; Raquel Esmeralda Guillén Guillén; Viviana Marcela Hidalgo Moya; Silvana Beatriz Terán Ayala

doi:10.47464/MetroCiencia/vol31/4/2023/29-34

Authors

Diana Carolina Ortiz Coba Universidad Central del Ecuador https://orcid.org/0009-0002-7422-1271
Raquel Esmeralda Guillén Guillén Universidad Central del Ecuador https://orcid.org/0000-0002-4177-1499
Viviana Marcela Hidalgo Moya Universidad Autónoma de los Andes https://orcid.org/0000-0002-8598-041X
Silvana Beatriz Terán Ayala Universidad Central del Ecuador https://orcid.org/0000-0001-7279-1276

DOI:

https://doi.org/10.47464/MetroCiencia/vol31/4/2023/29-34

Keywords:

endodontics, molars, scanning electron microscopy, instrumentation

Abstract

Objective: to analyze the plastic deformation, microcracks and craters of machined files after instrumentation in curved canals. Methodology: 90 mesial roots of upper and lower molars were used; the samples were randomly divided into two groups (n=45) for the ProTaper Gold® (PG) and TruNatomy® (TN) systems. Before using the files, they were observed in the scanning electron microscope in zero uses; The instrumentation protocol was carried out for each system with 5.25% sodium hypochlorite irrigation. After 9 uses they were analyzed in the scanning electron microscope to detect any surface defects present. Results: after nine uses, three surface defects were found: micro cracks, plastic deformation and craters in the two groups of files; micro cracks 97.80% ProTaper Gold® and 100% TruNatomy® group, plastic deformation 15.60% PG and 35.60% TN, craters: 100% for both files.

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Author Biographies

Diana Carolina Ortiz Coba, Universidad Central del Ecuador

Especialista en Endodoncia. Universidad Central del Ecuador. Quito, Ecuador
Raquel Esmeralda Guillén Guillén, Universidad Central del Ecuador

PhD en Odontología. Universidad Central del Ecuador. Quito, Ecuador
Viviana Marcela Hidalgo Moya, Universidad Autónoma de los Andes

Especialista en Endodoncia. Universidad Autónoma de los Andes. Ambato, Ecuador
Silvana Beatriz Terán Ayala, Universidad Central del Ecuador

Especialista en Endodoncia. Universidad Central del Ecuador. Quito, Ecuador

References

Chan WS, Gulati, Ove A P. Advancing Nitinol: From heat treatment to surface functionalization for nickel–titanium (NiTi) instruments in endodontics. Bioactive Materials. 2022 Septiembre; 22(91-111).

Al-Obaida MI, Merdad, Alanazi MS, Altwaijry H, AlFaraj, Alkhamis AA, et al. Resistance of 5 Heat-treated Nickel-titanium Reciprocating Systems in Canals with Single and Double Curvatures. Journal of Endodontics. 2019 October ; 45(1237-1241).

van der Vyver PJ, Vorster, Peters OA. Minimally invasive endodontics using a new single-file rotary system. Endodontic Practice US, 2020 June.

Rodrigues CT, Hungaro Duart A, de Almeida M, de Andrade FB, Bernardineli N. Efficacy of CM-Wire, M-Wire, and Nickel-Titanium Instruments for Removing Filling Material from Curved Root Canals: A Micro–Computed Tomography Study. Journal of Endodontics. 2016 November; 42(1651-1655).

Herold KS, Johnson BR, Wenckus CS. A Scanning Electron Microscopy Evaluation of Microfractures, Deformation and Separation in EndoSequence and Profile Nickel-Titanium Rotary Files Using an Extracted Molar Tooth Model. Journal of Endodontics. 2007 June ; 33(712-714).

Serefoglu, Kurt SM, Kaval M, Güneri, Demirci GK, Çalıkan MK. Cyclic Fatigue Resistance of Multiused Reciproc Blue Instruments during Retreatment Procedure. Journal of Endodontics. 2020 February; 46(277-282 ).

Uslu G, Özyürek, Yılmaz, Plotino. Effect of Dynamic Immersion in Sodium Hypochlorite and EDTA Solutions on Cyclic Fatigue Resistance of WaveOne and WaveOne Gold Reciprocating Nickel-titanium Files. Journal of Endodontics. 2018 May; 44(834-837).

Valois CRA, Silva LP, Azevedo RB. Multiple Autoclave Cycles Affect the Surface of Rotary Nickel-Titanium Files: An Atomic Force Microscopy Study. Journal of Endodontics. 2008 July; 34(859-862).

Larenas Cortez AR. Defectos superficiales de las limas mecanizadas de permeabilidad usadas en molares. Estudio in vitro. 2019. (Master's thesis, Quito: UCE).

Elnaghy AM, Elsaka SE. Mechanical properties of ProTaper Gold nickel-titanium rotary instruments. International Endodontic Journal. 2015 October; 49(1073-1078).

Burke, Nusstein J, Drum, Fowler S, Brantkey WA, Draper J. SEM study of simulated clinical use for four nickel–titanium rotary endodontic files. Medical Devices & Sensors. 2019 March; 2(1).

Alapati SB, Brantley WA, Svec TA, Powers JM, Nusstein JM, Daehn GS. SEM Observations of Nickel-Titanium Rotary Endodontic Instruments that Fractured During Clinical Use. Journal of Endodontics. 2005 January; 31(1).

Arantes W, Monteiro C, Lage-Marques , Habitante S, Laureano L, Ferreira J. SEM Analysis of Defects and Wear on Ni–Ti Rotary Instruments. Journal Of Endodontics. 2014; 411-418(36).

Shen Y, Zhou H, Coil J, Aljazaeri B, Buttar R, Wang Z. ProFile Vortex and Vortex blue nickel-titanium rotary instruments after clinical use. Journal of Endodontics. 2015 Jun; 41(937-42).