Variation in Resistance to Cyclic Fatigue of Nickel-Titanium Files Exposed to Sodium Hypochlorite

Year 2024, Volume: 10 Issue: 2, 107 - 111, 28.08.2024

Emre Bodrumlu , Abdullah A.m. Obaid

https://doi.org/10.21306/dishekimligi.1509849

Abstract

Objective: This study aimed to assess the alterations in cyclic fatigue resistance of two types of nickel-titanium (NiTi) rotary files, both with and without CE certification, in their initial condition and after being subjected to 5% sodium hypochlorite (NaOCl) solutions for a duration of 5 minutes.
Materials and Methods: In this study, 32 new NiTi files of two types (V3-M size 25.04 and R-Shaper size 25.04), with and without a CE certificate, were used. The files were divided into groups of 16, with and without the CE certificate. These groups were further divided into two subgroups (n=8): new files and files exposed to 5% NaOCl for 5 minutes for sterilization. The cyclic fatigue resistance of the files was measured using a specially designed test device. The SPSS 22.0 Software Package (SPSS 22.0 Software Package Program, Inc., Chicago, IL, USA) was used to compare the cyclic fatigue resistance of the files. A significance level of p<0.05 was accepted.
Results : When comparing the cyclic fatigue resistance of two different file groups before and after exposure, there was no significant difference between the pre-exposure and post-exposure values for the R-shaper file (p=0.74). However, for the V3-m type file, no statistically significant difference was found between the pre-exposure and post-exposure values (p<0.05).
Conclusion: The cyclic fatigue resistance of NiTi rotary files with CE certification remained unaffected after exposure to 5% NaOCl for sterilization, while the files without CE certification showed changes in their cyclic resistance. Therefore, we believe that the use of NiTi files with CE certification is of significant importance.

Keywords

Root canal Instruments, Cyclic Fatigue, Sodium Hypochlorite.

Sodyum Hipoklorite Maruz Kalan Nikel-Titanyum Eğelerin Döngüsel Yorgunluğuna Karşı Direnç Değişimi

Abstract

Amaç: Bu çalışmanın amacı, CE belgesi olan ve olmayan iki nikel-titanyum (NİTİ) döner eğenin ilk hali ile %5 sodyum hipoklorit (NaOCl) solüsyonlarına 5 dakika maruz kalan eğelerin döngüsel yorgunluk dirençlerindeki değişimleri değerlendirmektir.
Gereç ve Yöntemler: Bu çalışmada, 32 adet paketinden yeni çıkarılan CE belgesi olan ve olmayan 2 çeşit NiTi eğe (V3-M boyut 25.04 ve boyut 25.04 R-Shaper eğesi) kullanılmaktadır. Eğeler, CE belgesi olan ve olmayan şeklinde 16’şarlı gruplara ayrıldı. Bu gruplar da paketinden yeni çıkarılan eğe grubu ve steril etmek için 5 dakika %5 NaOCl’ye maruz bırakılmış eğe grubu olarak ikiye (n=8) ayrıldı. Eğelerin döngüsel yorulma direnci, özel olarak tasarlanmış bir test cihazında ölçüldü. Eğelerin döngüsel yorulma dirençlerini karşılaştırmak için SPSS 22.0 Paket Veri Programı (SPSS 22.0 Software Package Program, Inc., Chicago, IL, ABD) kullanıldı. Anlamlılık değeri p<0.05 olarak kabul edildi.
Bulgular: İki farklı eğe grubunun maruz kalmadan önceki ve sonraki döngüsel dayanımları karşılaştırıldığında, R-shaper eğesinde maruz bırakılmadan önceki ve sonraki değerler arasında anlamlı bir fark bulunmazken (p=0.74), V3-m tipi eğenin maruz bırakılmadan önceki ve sonraki değerleri arasında istatistiksel olarak anlamlı bir fark bulunmamıştır (p<0.05).
Sonuç: CE belgesine sahip olan NİTİ döner aletlerin döngüsel yorulma dirençleri, ilk hali ile steril etmek için %5 NaOCl'ye maruz bırakılan etkilenmemesine karşın CE belgesi olmayan eğelerin döngüsel dirençlerinde değişiklik göstermektedir. Bu nedenle CE belgeli NiTi eğelerinin kullanılmasının önem arz edeceği görüşündeyiz.

Keywords

Kanal Aleti, Döngüsel Yorgunluk, Sodyum Hipoklorit.

References

• Jitumori RT, Rodrigues RC, Reis A, Gomes JC, Gomes GM. Effect of dentin moisture on the adhesive properties of luting fiber posts using adhesive strategies. Braz Oral Res. 2023;37:e42.
• Han-Hsing Lin J, Karabucak B, Lee SM. Effect of sodium hypochlorite on conventional and heat-treated nickel-titanium endodontic rotary instruments - An in vitro study. J Dent Sci. 2021;16(2):738-43.
• Martins JNR, Silva E, Marques D, Braz Fernandes FM, Versiani MA. Comprehensive Assessment of Cyclic Fatigue Strength in Five Multiple-File Nickel Titanium Endodontic Systems. Materials (Basel). 2024;17(10):2345.
• Madarati AA. Factors influencing incidents of complications while using nickel-titanium rotary instruments for root canal treatment. BMC Oral Health. 2019;19(1):241.
• Shen Y, Zhou HM, Zheng YF, Peng B, Haapasalo M. Current challenges and concepts of the thermomechanical treatment of nickel-titanium instruments. J Endod. 2013;39(2):163-72.
• Chan WS, Gulati K, Peters OA. Advancing Nitinol: From heat treatment to surface functionalization for nickel-titanium (NiTi) instruments in endodontics. Bioact Mater. 2023;22:91-111.
• Zupanc J, Vahdat-Pajouh N, Schäfer E. New thermomechanically treated NiTi alloys - a review. Int Endod J. 2018;51(10):1088-103.
• Capar ID, Kaval ME, Ertas H, Sen BH. Comparison of the cyclic fatigue resistance of 5 different rotary pathfinding instruments made of conventional nickel titanium wire, M-wire, and controlled memory wire. J Endod. 2015;41(4):535-8.
• Zanza A, D'Angelo M, Reda R, Gambarini G, Testarelli L, Di Nardo D. An Update on Nickel Titanium Rotary Instruments in Endodontics: Mechanical Characteristics, Testing and Future Perspective-An Overview. Bioengineering (Basel). 2021;8(12).
• Braga LC, Faria Silva AC, Buono VT, de Azevedo Bahia MG. Impact of heat treatments on the fatigue resistance of different rotary nickel-titanium instruments. J Endod. 2014;40(9):1494-7.
• Abdel-Baset ST, Fahmy SH, Obeid MF. Can instrumentation kinematics affect postoperative pain and substance P levels? A randomized controlled trial. BMC Oral Health. 2024;24(1):102.
• Patil R, Singh SV, Mandlik JS, Jadhav A, Handa A, Jadhav A. Evaluating the Efficacy of Certain Intermediate Irrigants in Preventing Precipitate Formed Due to Sodium Hypochlorite and Chlorhexidine Within the Root Canal System: An In Vitro Study. Cureus. 2023;15(6):e39871.
• D'Amario M, Baldi M, Petricca R, De Angelis F, El Abed R, D'Arcangelo C. Evaluation of a new nickel titanium system to create the glide path in root canal preparation of curved canals. J Endod. 2013;39(12):1581-4.
• Gutmann J, Lovdahl PE. Problem solving in endodontics: Prevention, identification, and management: Fifth edition. Problem Solving in Endodontics: Prevention, Identification, and Management: Fifth Edition. 2010:1-478.
• Avcı M, Şermet Elbay Ü, Kaşıkçı S. Effects of different irrigation activation methods on root canal treatment of primary teeth. J Clin Pediatr Dent. 2024;48(3):156-65.
• Kaşıkçı S, Türker SA, Güven B. Effect of different retreatment files using different kinematics on the release of inflammatory mediators in root canal retreatment of single-rooted teeth: a randomized clinical trial. Clin Oral Investig. 2023;27(6):3189-96.
• Langaliya A, Dhull KS, Gupta B, Saleem Agwan MA, Gupta S, Macha Y, Makkad RS. Effect of NaOCl on cyclic fatigue resistance. Bioinformation. 2023;19(13):1348-52.
• 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.
• Ferreira F, Adeodato C, Barbosa I, Aboud L, Scelza P, Zaccaro Scelza M. Movement kinematics and cyclic fatigue of NiTi rotary instruments: a systematic review. Int Endod J. 2017;50(2):143-52.
• Liu W, Wu B. Root Canal Surface Strain and Canal Center Transportation Induced by 3 Different Nickel Titanium Rotary Instrument Systems. J Endod. 2016;42(2):299-303.
• Rodrigues RC, Lopes HP, Elias CN, Amaral G, Vieira VT, De Martin AS. Influence of different manufacturing methods on the cyclic fatigue of rotary nickel-titanium endodontic instruments. J Endod. 2011;37(11):1553-7.
• Pruett JP, Clement DJ, Carnes DL, Jr. Cyclic fatigue testing of nickel-titanium endodontic instruments. J Endod. 1997;23(2):77-85.
• Uslu G, Özyürek T, Yılmaz K, Plotino G. Effect of dynamic immersion in sodium hypochlorite and EDTA solutions on cyclic fatigue resistance of WaveOne and WaveOne Gold reciprocating nickel-titanium files. J Endod. 2018;44(5):834-7.
• Pedullà E, Benites A, La Rosa GM, Plotino G, Grande NM, Rapisarda E, Generali L. Cyclic fatigue resistance of heat-treated nickel-titanium instruments after immersion in sodium hypochlorite and/or sterilization. J Endod. 2018;44(4):648-53.
• Berutti E, Angelini E, Rigolone M, Migliaretti G, Pasqualini D. Influence of sodium hypochlorite on fracture properties and corrosion of ProTaper Rotary instruments. Int Endod J. 2006;39(9):693-9.
• Peters O, Roehlike J, Baumann M. Effect of Immersion in Sodium Hypochlorite on Torque and Fatigue Resistance of Nickel-Titanium Instruments. J Endod. 2007;33:589-93