Restorative Dentistry & Endodontics

Research Articles

Effect of number of uses and sterilization on the instrumented area and resistance of reciprocating instruments: Victor de Ornelas Peraça, Samantha Rodrigues Xavier, Fabio de Almeida Gomes, Luciane Geanini Pena dos Santos, Erick Miranda Souza, Fernanda Geraldo Pappen; Restor Dent Endod 2021;46(2):e28. Published online April 29, 2021; DOI: https://doi.org/10.5395/rde.2021.46.e28

Objectives

This study evaluated the effect of repeated uses and autoclaving in the instrumented area, fracture resistance, and time of instrumentation of thermally treated nickel-titanium reciprocating systems.

Materials and Methods

Two hundred simulated canals were instrumented using Reciproc Blue and WaveOne Gold. Each file was used up to 10 times or until fracture. The instrumented area was measured in pre- and post-operative images, using ImageJ software. Kaplan-Meier survival analysis evaluated the number of uses of instruments before fracture. Instrumented area and time of instrumentation were analyzed by Mann-Whitney U test and Kruskal-Wallis. Correlations among the number of uses and instrumented area were measured. The level of statistical significance was set at p < 0.05.

Results

Reciproc Blue presented a higher estimated number of uses in comparison with WaveOne Gold (p = 0.026), but autoclaving did not affect the resistance to fracture of instruments (p > 0.05). The instrumented area was different among the evaluated groups (p = 0.039), and the instrumented area along the uses of both tested instruments was reduced. With the time of instrumentation, there was also a significant difference among the evaluated groups; the groups without sterilization cycles were faster, in comparison to those submitted to autoclaving (p = 0.010).

Conclusions

Reciproc Blue was more resistant than WaveOne Gold, suffering later fracture. Additionally, the sterilization cycles did not influence the estimated number of uses of thermally treated reciprocating instruments, but the instrumented area of root canals was reduced along with the repeated uses of both instruments.

Citations

Citations to this article as recorded by

The influence of autoclave sterilization on the cyclic fatigue of M-wire rotary endodontic instruments
Nenad Stosic, Jelena Popovic, Antonije Stankovic, Aleksandar Mitic, Marija Nikolic, Kosta Todorovic
Vojnosanitetski pregled.2024; 81(10): 642. CrossRef

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Influence of autoclave sterilization procedures on the cyclic fatigue resistance of heat-treated nickel-titanium instruments: a systematic review: Emmanuel João Nogueira Leal Silva, Mayara Zanon, Fernanda Hecksher, Felipe Gonçalves Belladonna, Rafaela Andrade de Vasconcelos, Tatiana Kelly da Silva Fidalgo; Restor Dent Endod 2020;45(2):e25. Published online March 31, 2020; DOI: https://doi.org/10.5395/rde.2020.45.e25

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Objectives

This systematic review evaluated the influence of autoclave sterilization procedures on the cyclic fatigue resistance of heat-treated nickel-titanium (NiTi) instruments.

Materials and Methods

A systematic search without restrictions was conducted in the following electronic databases: PubMed, Scopus, Web of Science, ScienceDirect, Cochrane, and Open Grey. The hand search was also performed in the main endodontic journals. The eligible studies were submitted to the methodological assessment and data extraction.

Results

From 203 abstracts, a total of 10 articles matched the eligible criteria. After reading the full articles, 2 were excluded because of the absence of the heat-treated instruments in the experimental design and 3 due to the lack of a control group using heat-treated instruments without autoclave sterilization. From the 5 included studies, 1 presented a low risk of bias, 3 presented moderate and 1 high risk. It was observed heterogeneous findings in the included studies, with autoclave sterilization cycles increasing, decreasing or not affecting the cyclic fatigue life of heat-treated NiTi instruments. However, the retrieved studies evaluating the cyclic fatigue resistance of endodontic instruments presented different protocols and assessing outcomes, this variability makes the findings less comparable within and also between groups and preclude the establishment of an unbiased scientific evidence base.

Conclusions

Considering the little scientific evidence and considerable risk of bias, it is still possible to conclude that autoclave sterilization procedures appear to influence the cyclic fatigue resistance of heat-treated NiTi instruments.

Citations

Citations to this article as recorded by

Effect of simulated clinical use and sterilization on the cyclic fatigue resistance of nickel titanium files
Mohammad Alajemi, Ammar AbuMostafa
PeerJ.2024; 12: e17418. CrossRef
Cyclic Fatigue of Different Ni-Ti Endodontic Rotary File Alloys: A Comprehensive Review
Dina Abdellatif, Alfredo Iandolo, Michela Scorziello, Giuseppe Sangiovanni, Massimo Pisano
Bioengineering.2024; 11(5): 499. CrossRef
Cyclic Fatigue Resistance of Rotary versus Reciprocating Endodontic Files: A Systematic Review and Meta-Analysis
Ana De Pedro-Muñoz, Cristina Rico-Romano, Patricia Sánchez-Llobet, José María Montiel-Company, Jesús Mena-Álvarez
Journal of Clinical Medicine.2024; 13(3): 882. CrossRef
Influence of sodium hypochlorite on cyclic fatigue resistance of nickel–titanium instruments: A systematic review and meta-analysis of in vitro studies
Alexandre Henrique dos Reis-Prado, Lucas Guimarães Abreu, Lara Cancella de Arantes, Kiani dos Santos de Paula, Sabrina de Castro Oliveira, Juliana Goto, Ana Cecília Diniz Viana, Francine Benetti
Clinical Oral Investigations.2023; 27(11): 6291. CrossRef
Cyclic fatigue resistance of EdgeTaper Platinum, Protaper Gold, and TruNatomy Prime rotary files before and after autoclave sterilization
Rahaf A. Almohareb, Reem M. Barakat, Fahda N. Algahtani, Manal F. Alkadi
PeerJ.2023; 11: e14656. CrossRef
Effect of calcium hydroxide on fracture resistance and microhardness of dentin in human teeth
Simar Sethi, Alpa Gupta, Ansy Hanna Kurian, Dax Abraham, Parul Chauhan, Kritika Aneja, Sucheta Jala, Arundeep Singh
Endodontology.2022; 34(4): 223. CrossRef
Effect of body temperature on the cyclic fatigue resistance of the nickel”titanium endodontic instruments: A systematic review and meta-analysis of in vitro studies
Selventhra Savitha, Sidhartha Sharma, Vijay Kumar, Amrita Chawla, Perumal Vanamail, Ajay Logani
Journal of Conservative Dentistry.2022; 25(4): 338. CrossRef
Fracture Resistance of Heat-Treated Nickel-Titanium Rotary Files After Usage and Autoclave Sterilization: An In Vitro Study
Rashid El Abed, Aisha Alshehhi, Yoo Jung Kang, Dana Al Raeesi, Amar H. Khamis, Mohamed Jamal, Hyeon-Cheol Kim
Journal of Endodontics.2022; 48(11): 1428. CrossRef
Effect of Autoclaving Cycles on the Cyclic Fatigue Resistance of Race and Race Evo Nickel-Titanium Endodontic Rotary Files: An In Vitro Study
Rahaf A. Almohareb, Reem Barakat, Aroob Albakri, Manal Altamimi
Metals.2021; 11(12): 1947. CrossRef
Effect of number of uses and sterilization on the instrumented area and resistance of reciprocating instruments
Victor de Ornelas Peraça, Samantha Rodrigues Xavier, Fabio de Almeida Gomes, Luciane Geanini Pena dos Santos, Erick Miranda Souza, Fernanda Geraldo Pappen
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Influence of sterilization procedures on the physical and mechanical properties of rotating endodontic instruments: a systematic review and network meta-analysis
Mario Dioguardi, Claudia Arena, Diego Sovereto, Riccardo Aiuto, Luigi Laino, Gaetano Illuzzi, Enrica Laneve, Bruna Raddato, Vito Carlo Alberto Caponio, Antonio Dioguardi, Khrystyna Zhurakivska, Giuseppe Troiano, Lorenzo Lo Muzio
Frontiers in Bioscience-Landmark.2021;[Epub] CrossRef

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The effects of autoclave sterilization on the cyclic fatigue resistance of ProTaper Universal, ProTaper Next, and ProTaper Gold nickel-titanium instruments: Taha Özyürek, Koray Yılmaz, Gülşah Uslu; Restor Dent Endod 2017;42(4):301-308. Published online November 2, 2017; DOI: https://doi.org/10.5395/rde.2017.42.4.301

Abstract PDF PubReader ePub

Objectives

It was aimed to compare the cyclic fatigue resistances of ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG) and the effects of sterilization by autoclave on the cyclic fatigue life of nickel-titanium (NiTi) instruments.

Materials and Methods

Eighty PTU, 80 PTN, and 80 PTG were included to the present study. Files were tested in a simulated canal. Each brand of the NiTi files were divided into 4 subgroups: group 1, as received condition; group 2, pre-sterilized instruments exposed to 10 times sterilization by autoclave; group 3, instruments tested were sterilized after being exposed to 25%, 50%, and 75% of the mean cycles to failure, then cycled fatigue test was performed; group 4, instruments exposed to the same experiment with group 3 without sterilization. The number of cycles to failure (NCF) was calculated. The data was statistically analyzed by using one-way analysis of variance and post hoc Tukey tests.

Results

PTG showed significantly higher NCF than PTU and PTN in group 1 (p < 0.05). Sterilization significantly increased the NCF of PTN and PTG (p < 0.05) in group 2. PTN in group 3 had significantly higher cyclic fatigue resistance than PTN group 4 (p < 0.05). Also, significantly higher NCF was observed for PTG in group 2 than in groups 3 and 4 (p < 0.05).

Conclusions

PTG instrument made of new gold alloy was more resistant to fatigue failure than PTN and PTU. Autoclaving increased the cyclic fatigue resistances of PTN and PTG.

Citations

Citations to this article as recorded by

The influence of autoclave sterilization on the cyclic fatigue of M-wire rotary endodontic instruments
Nenad Stosic, Jelena Popovic, Antonije Stankovic, Aleksandar Mitic, Marija Nikolic, Kosta Todorovic
Vojnosanitetski pregled.2024; 81(10): 642. CrossRef
Evaluatation of two nickle-titanium systems’ (Neolix and X Pro Gold) resistance to fracture after immersion in sodium hypochlorite.
Solmaz Araghi, Abbas Delvarani, Faeze dehghan, Parisa Kaghazloo
journal of research in dental sciences.2024; 21(1): 17. CrossRef
Comparing the EdgeFile X3, GenEndo, HeroGold, and ProTaper Gold Rotary Instruments Regarding the Effect of Different Concentrations and Temperature of NaOCl on Cyclic Fatigue Resistance
Garima Tyagi, Parul Shakarwal, Prakash Kumar, Annu Kumari, Aditya Singh, Pallavi Kusum
The Journal of Contemporary Dental Practice.2023; 24(9): 715. CrossRef
Cyclic fatigue resistance of EdgeTaper Platinum, Protaper Gold, and TruNatomy Prime rotary files before and after autoclave sterilization
Rahaf A. Almohareb, Reem M. Barakat, Fahda N. Algahtani, Manal F. Alkadi
PeerJ.2023; 11: e14656. CrossRef
Comparison of the fracture resistance of the teeth prepared with ProTaper Universal, ProTaper Next, and ProTaper Gold rotary files
Amin Salem Milani, Shabnam Ganjpour, Fatemeh Dehghani, Saeed Rahimi, Pouya Sabanik
Clinical and Experimental Dental Research.2022; 8(6): 1421. CrossRef
Impacts of NaOCl and Irritrol irrigation solutions with/without autoclave sterilisation on the cyclic fatigue resistance of different nickel‐titanium files
Fatma Kermeoglu, Mohamad Abduljalil
Australian Endodontic Journal.2022; 48(3): 392. CrossRef
Fracture Resistance of Heat-Treated Nickel-Titanium Rotary Files After Usage and Autoclave Sterilization: An In Vitro Study
Rashid El Abed, Aisha Alshehhi, Yoo Jung Kang, Dana Al Raeesi, Amar H. Khamis, Mohamed Jamal, Hyeon-Cheol Kim
Journal of Endodontics.2022; 48(11): 1428. CrossRef
Nitinol Type Alloys General Characteristics and Applications in Endodontics
Leszek A. Dobrzański, Lech B. Dobrzański, Anna D. Dobrzańska-Danikiewicz, Joanna Dobrzańska
Processes.2022; 10(1): 101. CrossRef
The Impact of Multiple Autoclave Cycles on the Surface Roughness of Thermally Treated Nickel-Titanium Endodontic Files
Raidan Ba-Hattab, Rahaf A. Almohareb, Rana Alkhalaf, Shikhah Binnjefan, Meral Sulayem, Reem M. Barakat, Ismail Demir
Advances in Materials Science and Engineering.2022; 2022: 1. CrossRef
Effect of autoclave sterilisation and heat activated sodium hypochlorite irrigation on the performance of nickel-titanium rotary files against cyclic fatigue
Zuha Ayad Jaber, Sattar Jabbar Abdul-Zahra Al-Hmedat, Sarmad Adel Hameed, Suhad Jabbar Hamed Al-Nasrawi, Abtesam Imhemed Aljdaimi, Julfikar Haider
Advances in Materials and Processing Technologies.2022; 8(1): 1071. CrossRef
Effect of different axial speed patterns on cyclic fatigue resistance of rotary nickel-titanium instruments
Myint Thu, Arata Ebihara, Keiichiro Maki, Miki Nishijo, Shunsuke Kimura, Taro Nakatsukasa, Moe Sandar Kyaw, Takashi Okiji
BMC Oral Health.2022;[Epub] CrossRef
Cyclic Fatigue Resistance and Shaping Ability of Heat-Treated Nickel-Titanium Instruments after Repeated Use
SG Kamali, D Turkaydin
Nigerian Journal of Clinical Practice.2021; 24(2): 247. CrossRef
Effects of repeated sterilization cycles on the surface alterations of ProTaper Next, TF Adaptive, HyFlex CM, and 2Shape instruments
Olcay Özdemir, Sibel Koçak, Mustafa Murat Koçak, Baran Can Sağlam
Journal of Dental Research, Dental Clinics, Dental Prospects.2021; 15(2): 76. CrossRef
Cleaning of endodontic files with and without enzymatic detergent by means of the manual method versus the ultrasonic method
César F Cayo-Rojas, Estefany Brito-Ávila, Ana S Aliaga-Mariñas, Karen K Hernández-Caba, Emylain D Saenz-Cazorla, Marysela I Ladera-Castañeda, Luis A Cervantes-Ganoza
Journal of International Society of Preventive and Community Dentistry.2021; 11(3): 307. CrossRef
Effect of number of uses and sterilization on the instrumented area and resistance of reciprocating instruments
Victor de Ornelas Peraça, Samantha Rodrigues Xavier, Fabio de Almeida Gomes, Luciane Geanini Pena dos Santos, Erick Miranda Souza, Fernanda Geraldo Pappen
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Influence of sterilization procedures on the physical and mechanical properties of rotating endodontic instruments: a systematic review and network meta-analysis
Mario Dioguardi, Claudia Arena, Diego Sovereto, Riccardo Aiuto, Luigi Laino, Gaetano Illuzzi, Enrica Laneve, Bruna Raddato, Vito Carlo Alberto Caponio, Antonio Dioguardi, Khrystyna Zhurakivska, Giuseppe Troiano, Lorenzo Lo Muzio
Frontiers in Bioscience-Landmark.2021;[Epub] CrossRef
EFFECTS OF SODIUM HYPOCHLORIDE ON CYCLIC FATIGUE RESISTANCE OF BIORACE ROTARY INSTRUMENT WITH DIFFERENT TIP SIZES
Ayfer ATAV ATEŞ, Burçin ARICAN
Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi.2021; : 1. CrossRef
The Influence of NiTi Alloy on the Cyclic Fatigue Resistance of Endodontic Files
Celia Ruiz-Sánchez, Vicente Faus-Llácer, Ignacio Faus-Matoses, Álvaro Zubizarreta-Macho, Salvatore Sauro, Vicente Faus-Matoses
Journal of Clinical Medicine.2020; 9(11): 3755. CrossRef
Novel Electronic Device to Quantify the Cyclic Fatigue Resistance of Endodontic Reciprocating Files after Using and Sterilization
Álvaro Zubizarreta-Macho, Óscar Alonso-Ezpeleta, Alberto Albaladejo Martínez, Vicente Faus Matoses, Javier Caviedes Brucheli, Rubén Agustín-Panadero, Jesús Mena Álvarez, Fernando Vizmanos Martínez-Berganza
Applied Sciences.2020; 10(14): 4962. CrossRef
Influence of autoclave sterilization procedures on the cyclic fatigue resistance of heat-treated nickel-titanium instruments: a systematic review
Emmanuel João Nogueira Leal Silva, Mayara Zanon, Fernanda Hecksher, Felipe Gonçalves Belladonna, Rafaela Andrade de Vasconcelos, Tatiana Kelly da Silva Fidalgo
Restorative Dentistry & Endodontics.2020;[Epub] CrossRef
Management of Instrument Sterilization Workflow in Endodontics: A Systematic Review and Meta-Analysis
Mario Dioguardi, Diego Sovereto, Gaetano Illuzzi, Enrica Laneve, Bruna Raddato, Claudia Arena, Vito Carlo Alberto Caponio, Giorgia Apollonia Caloro, Khrystyna Zhurakivska, Giuseppe Troiano, Lorenzo Lo Muzio
International Journal of Dentistry.2020; 2020: 1. CrossRef
Effect of autoclave sterilization on cyclic fatigue and torsional fracture resistance of NiTi rotary instruments
Wooyoung Kim, Soram Oh, Gil-Joo Ryu, Tae-Hwan Kim, Sung-Jae Kim, Dong-Hyung Kim, Bin-Na Lee, Kee-Yeon Kum, Seok Woo Chang, Ji-Hyun Jang
Odontology.2020; 108(2): 194. CrossRef
Effects of Sodium Hypochlorite Concentration and Temperature on the Cyclic Fatigue Resistance of Heat-treated Nickel-titanium Rotary Instruments
Hussam Alfawaz, Abdullah Alqedairi, Hala Alsharekh, Eman Almuzaini, Shahd Alzahrani, Ahmed Jamleh
Journal of Endodontics.2018; 44(10): 1563. CrossRef
Cyclic Fatigue Resistance of Heat-treated Nickel-titanium Instruments after Immersion in Sodium Hypochlorite and/or Sterilization
Eugenio Pedullà, Angela Benites, Giusy M. La Rosa, Gianluca Plotino, Nicola M. Grande, Ernesto Rapisarda, Luigi Generali
Journal of Endodontics.2018; 44(4): 648. CrossRef

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Original Articles

Assessment of sterilization effect and the alteration of surface texture and physical properties of gutta-percha cone after short-term chemical disinfection: Nan-Sim Pang, Il-Young Jung, Yoon-Jung Yu, Kee-Yeon Kum; J Korean Acad Conserv Dent 2006;31(2):133-140. Published online March 31, 2006; DOI: https://doi.org/10.5395/JKACD.2006.31.2.133

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The purposes of this study were firstly to identify the microbial species on gutta-percha (GP) cones exposed at clinics using polymerase chain reaction, and secondly to evaluate the short-term sterilization effect of three chemical disinfectants. It also evaluated the alteration of surface texture and physical properties of GP cones after 5-min soaking into three chemical disinfectants. 150 GP cones from two endodontic departments were randomly selected for microbial detection using PCR assay with universal primer. After inoculation on the sterilized GP cones with the same microorganism identified by PCR assay, they were soaked in three chemical disinfectants: 5% NaOCl, 2% Chlorhexidine, and ChloraPrep for 1, 5, 10, and 30 minutes. The sterilization effect was evaluated by turbidity and subculture. The change of surface textures using a scanning electron microscope and the tensile strength and elongation rate of the GP cones were measured using an Instron 5500 (Canton). Statistical analysis was performed.

Four bacterial species were detected in 29 GP cones (19.4%), and all the species belonged to the genus Staphylococcus. All chemical disinfectants were effective in sterilization with just 1 minute soaking. On the SEM picture of NaOCl-soaked GP cone, a cluster of cuboidal crystals was seen on the cone surface. The tensile strength of NaOCl-soaked group was significantly higher than the other groups (p < 0.05). Also, all disinfectants significantly increased the elongation rate of GP cones compared to the fresh GP cone (p < 0.05). Present data demonstrate that three chemical disinfectants are useful for rapid sterilization of GP cone just before obturation.

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The effect of NaOCl treatment and sterilization procedures on the corrosion of endodontic files: Won-Kyung Yang, Yoon-Sik Ra, Young-Kyoo Lee, Ho-Hyun Son, Mi-Ri Kim; J Korean Acad Conserv Dent 2005;30(2):121-127. Published online March 31, 2005; DOI: https://doi.org/10.5395/JKACD.2005.30.2.121

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A variety files made of stainless steel (S-S) or nickel-titanium (Ni-Ti) are used during endodontic treatment. The purpose of this study was to evaluate the corrosion susceptibility of S-S and Ni-Ti endodontic files. Three brands of files were used for this study: K-flex® S-S files (Maillefer, USA), Profile® Ni-Ti files (Maillefer, USA), K-3® Ni-Ti files (SybronEndo, USA). 120 files of each brands (21mm, ISO size #20) were divided into 12 groups according to 1) sterilization methods using Autoclave or Ethylene Oxide (E-O) gas, 2) Irrigation solutions using 5.25 % NaOCl or Saline, 3) the number of sterilization (1, 5, 10 times). After above procedures, each of the files was inspected by three examiners with a light microscope and camera at X25. Each file was judged and ranked according to the following criteria: 0; no corrosion, 1; mild corrosion, 2; moderate corrosion, and 3; severe corrosion. The files of high score were examined under the Scanning Electron Microscope.

Data were statistically analyzed with the Kruskal-Wallis test (p < 0.05). Most of the ten time-autoclaved files had showed mild to moderate corrosion. But, one or five time-autoclaved files did not show corrosive surface. NaOCl treatment and E-O gas sterilization did not influence on corrosion. There was a significant difference in corrosion susceptibility between sterilization methods and the number of autoclaving. However, there was no significant difference between brands and file materials.

Citations

Citations to this article as recorded by

Comparison of Various Cold Sterilization Techniques on Routinely used Carbide Burs and Diamond Points
Suganthi Ranganathan, Supriya Manvi, Srivatsa Gopalakrishna, Chaitra Koppal Renukanath
International Journal of Prosthodontics and Restorative Dentistry.2017; 7(3): 97. CrossRef

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