Elektrik Deşarjı ile Üretilen Ni-Ti Eğelerin Termo-Mekanik Özellikleri ve Endodontik Retreatment Performansı
Özet
Elektrik deşarjı ile şekillendirme (EDM), nikel-titanyum (Ni-Ti) endodontik eğelerin üretiminde yüzey bütünlüğünü ve mekanik dayanımı artıran gelişmiş bir teknolojidir. EDM sürecinde oluşan kompakt ve sert yüzey tabakası, mikro çatlak oluşumunu azaltarak döngüsel yorgunluk direncinin ve elastik stabilitenin yükselmesine katkı sağlar. Bu özellikler, özellikle yüksek torsiyonel ve döngüsel yük gerektiren retreatment işlemlerinde daha güvenli ilerleme ve daha düşük kırılma riski ile ilişkilidir. Ayrıca EDM ile üretilmiş eğelerin irrigasyon solüsyonlarına karşı daha dirençli olması yüzey bütünlüğünün korunmasını destekler. Bu mekanik ve kimyasal avantajların birleşimi, EDM ile üretilen Ni-Ti eğeleri klinik uygulamalarda daha öngörülebilir ve etkili bir seçenek hâline getirmektedir.
Referanslar
Hamid T, Malik A, Kumar A, Anjum S. Comparative evaluation of cyclic fatigue resistance of thermomechanically treated NiTi rotary instruments in simulated curved canals with two different radii of curvature: An in vitro Study. J Conserv Dent Endod. 2024;27(4):393–9.
Schäfer E, Bürklein S. Impact of nickel–titanium instrumentation of the root canal on clinical outcomes: a focused review. Odontology. 2012 22;100(2):130–6.
PETERS O. Current Challenges and Concepts in the Preparation of Root Canal Systems: A Review. J Endod. 2004;30(8):559–67.
Gambarini G, Plotino G, Grande NM, Al‐Sudani D, De Luca M, Testarelli L. Mechanical properties of nickel–titanium rotary instruments produced with a new manufacturing technique. Int Endod J. 2011;10;44(4):337–41.
Gündoğar M, Özyürek T. Cyclic Fatigue Resistance of OneShape, HyFlex EDM, WaveOne Gold, and Reciproc Blue Nickel-titanium Instruments. J Endod. 2017;43(7):1192–6.
Das P, Swapna D, Nadig R. Comparison and evaluation of surface deformation of Hyflex controlled memory and Hyflex electric discharge machining nickel titanium rotary files and cyclic fatigue resistance after instrumentation and heat sterilization – An in vitro study. J Conserv Dent. 2019;22(5):464.
Pirani C, Iacono F, Generali L, Sassatelli P, Nucci C, Lusvarghi L, et al. HyFlex EDM: superficial features, metallurgical analysis and fatigue resistance of innovative electro discharge machined NiTi rotary instruments. Int Endod J. 2016;49(5):483–93.
de Mello JE, Cunha RS, da Silveira Bueno CE, Zuolo ML. Retreatment efficacy of gutta-percha removal using a clinical microscope and ultrasonic instruments: Part I—an ex vivo study. Oral Surg Oral Med Oral Pathol, Oral Radiol Endod. 2009;108(1):e59–62.
Plotino G, Grande NM, Mercadé Bellido M, Testarelli L, Gambarini G. Influence of Temperature on Cyclic Fatigue Resistance of ProTaper Gold and ProTaper Universal Rotary Files. J Endod. 2017;43(2):200–2.
Hamdy TM, Alkabani YM, Ismail AG, Galal MM. Impact of endodontic irrigants on surface roughness of various nickel-titanium rotary endodontic instruments. BMC Oral Health. 2023;23(1):517.
Oh S, Kum KY, Kim HJ, Moon SY, Kim HC, Chaniotis A, et al. Bending resistance and cyclic fatigue resistance of WaveOne Gold, Reciproc Blue, and HyFlex EDM instruments. J Dent Sci. 2020;15(4):472–8.
Alapati SB, Brantley WA, Iijima M, Clark WAT, Kovarik L, Buie C, et al. Metallurgical Characterization of a New Nickel-Titanium Wire for Rotary Endodontic Instruments. J Endod. 2009;35(11):1589–93.
Uygun A, Unal M, Falakaloglu S, Guven Y. Comparison of the cyclic fatigue resistance of hyflex EDM, vortex blue, protaper gold, and onecurve nickel–Titanium instruments. Niger J Clin Pract. 2020;23(1):41.
Pedullà E, Lo Savio F, Boninelli S, Plotino G, Grande NM, La Rosa G, et al. Torsional and Cyclic Fatigue Resistance of a New Nickel-Titanium Instrument Manufactured by Electrical Discharge Machining. J Endod. 2016;42(1):156–9.
Inan U, Gurel M. Evaluation of surface characteristics of rotary nickel-titanium instruments produced by different manufacturing methods. Niger J Clin Pract. 2017;20(2):143.
Pedullà E, Leanza G, La Rosa GRM, Gueli AM, Pasquale S, Plotino G, et al. Cutting efficiency of conventional and heat‐treated nickel–titanium rotary or reciprocating glide path instruments. Int Endod J. 2020;53(3):376–84.
Zupanc J, Vahdat‐Pajouh N, Schäfer E. New thermomechanically treated NiTi alloys – a review. Int Endod J. 2018;51(10):1088–103.
Kimura S, Ebihara A, Maki K, Kyaw MS, Kasuga Y, Omori S, et al. Phase transformation behavior and mechanical properties of HyFlex EDM nickel-titanium endodontic rotary instrument: Evaluation at body temperature. J Dent Sci. 2024;19(2):929–36.
Serefoglu B, Miçooğulları Kurt S, Kaval ME, Güneri P, Kandemir Demirci G, Çalışkan MK. Cyclic Fatigue Resistance of Multiused Reciproc Blue Instruments during Retreatment Procedure. J Endod. 2020;46(2):277–82.
Zehnder M. Root Canal Irrigants. J Endod. 2006;32(5):389–98.
Ezgi Aslantaş E, Askerbeyli Ors S, Serper A. Effect of Sodium Hypochlorite Irrigation with and Without Surfactant on Maximum Operative Torque and Vertical Force of Nickel-Titanium Endodontic Instruments. Acta Stomatol Croat. 2022;56(1):33–41.
Özcan T, Sonat B, Dartar Öztan M, Basmaci F, Aksoy U. The Determination of the Corrosion Rates of Rotary Ni-Ti Instruments in Various Irrigation Solutions. Cyprus J Med Sci. 2023;8(2):136–41.
Cai J ‐J., Tang X ‐N., Ge J ‐Y. Effect of irrigation on surface roughness and fatigue resistance of controlled memory wire nickel‐titanium instruments. Int Endod J. 2017;50(7):718–24.
Liao Z, la Monaca A, Murray J, Speidel A, Ushmaev D, Clare A, et al. Surface integrity in metal machining - Part I: Fundamentals of surface characteristics and formation mechanisms. Int J Mach Tools Manuf. 2021;162:103687.
Davril J, Balthazard R, Hocquel R, Reynaud A, Mortier É, Vincent M. Effect of EDTA, NaOCl, and HEDP-based irrigants on the mechanical properties of heat treated NiTi endodontic instruments. BDJ Open. 2025;11(1):84.
Bürklein S, Schäfer E. Apically Extruded Debris with Reciprocating Single-File and Full-sequence Rotary Instrumentation Systems. J Endod. 2012;38(6):850–2.
Plotino G, Ahmed HMA, Grande NM, Cohen S, Bukiet F. Current Assessment of Reciprocation in Endodontic Preparation: A Comprehensive Review—Part II: Properties and Effectiveness. J Endod. 2015;41(12):1939–50.
Çapar ID, Arslan H. A review of instrumentation kinematics of engine‐driven nickel–titanium instruments. Int Endod J. 2016;49(2):119–35.
Rödig T, Reicherts P, Konietschke F, Dullin C, Hahn W, Hülsmann M. Efficacy of reciprocating and rotary instruments for retreatment of curved root canals assessed by micro‐CT. Int Endod J. 2014;47(10):942–8.
Ruivo LM, Rios M de A, Villela AM, Martin AS de, Kato AS, Pelegrine RA, et al. Fracture incidence of Reciproc instruments during root canal retreatment performed by postgraduate students: a cross-sectional retrospective clinical study. Restor Dent Endod. 2021;46(4).
Keskin C, İnan U, Akgün H. Comparison of the Fracture Resistance of Hyflex EDM and WaveOne Gold Rotary System Instruments in Abrupt Apical Curvature. J Ege Univ School Dent. 2021;42(3):167–72.
Karunakar P, Ranga Reddy MS, Karteek BS, Lakshmi Charan Reddy C, Swetha C, Racha K, et al. Evaluation of the Efficacy of Neo-endo, Hyflex Re-treatment File Systems and H-Files for Removing Gutta-Percha From Root Canal Treated Tooth by Using Stereomicroscope—An In Vitro Study. J Pharm Bioallied Sci. 2024;16(Suppl 2):S1695–9.
Siqueira JF. Microbial causes of endodontic flare‐ups. Int Endod J. 2003;36(7):453–63.
Tanalp J, Güngör T. Apical extrusion of debris: a literature review of an inherent occurrence during root canal treatment. Int Endod J. 2014;47(3):211–21.
Uslu G, Özyürek T, Yılmaz K, Gündoğar M, Plotino G. Apically Extruded Debris during Root Canal Instrumentation with Reciproc Blue, HyFlex EDM, and XP-endo Shaper Nickel-titanium Files. J Endod. 2018;44(5):856–9.
Jintu C. Thomas, S.V. Satish, Krishnaprasad Shetty, Ashwini M Patil, Basvana Gouda. Comparative Evaluation of Apically Extruded Debris with Hyflex Edm, MTWO and Self Adjusting File Systems; An In –Vitro Study. Indian J Public Health Res Dev. 2021;12(3):84–9.
Silva EJNL, Lorenzoni TVM, Pereira M do R, Vieira VTL, Martins JNR, Ferndandes FMB, et al. Diamond‐like carbon coating enhances mechanical performance of NiTi rotary instruments: A multimethod analysis. Int Endod J. 2025;58(8):1257–66.
Bumbalek M, Joska Z, Pokorny Z, Sedlak J, Majerik J, Neumann V, et al. Cyclic Fatigue of Dental NiTi Instruments after Plasma Nitriding. Materials. 2021;14(9):2155.
Dennis D, Suebnukarn S, Heo MS, Abidin T, Nurliza C, Yanti N, et al. Artificial intelligence application in endodontics: A narrative review. Imaging Sci Dent. 2024;54(4):305.
Kuzekanani M. Nickel–Titanium rotary instruments: Development of the single-file systems. J Int Soc Prev Community Dent. 2018;8(5):386.
