Restorative Dentistry & Endodontics

Research Articles

Physical-mechanical, chemical and biological properties of graphene-reinforced glass ionomer cements: Tatiane Ramos dos Santos Jordão, Laura Soares Viana Fernandes, Karla Lorene de França Leite, Adílis Alexandria, Emmanuel João Nogueira Leal Silva, Lucianne Cople Maia, Tatiana Kelly da Silva Fidalgo; Restor Dent Endod 2024;49(4):e37. Published online October 10, 2024; DOI: https://doi.org/10.5395/rde.2024.49.e37

Abstract PDF PubReader ePub: Objectives
This study aimed to evaluate the physical-mechanical, chemical, and biological properties of graphene-reinforced glass ionomer cements (GICs).
Materials and Methods
Different proportions of graphene powder were incorporated into 2 high-viscosity self-curing GIC, Ketac Molar (G_Ketac) and Fuji IX (G_Fuji), in 4 different concentrations: 0.5%, 1%, 2%, and 5%. The control groups included the GICs without graphene. Experiments were performed to analyze linear (Ra) and volumetric roughness (Sa), antimicrobial activity, radiopacity, fluoride release, microhardness, solubility, and water sorption. Data were analyzed using Kruskal-Wallis, Mann-Whitney, Wilcoxon, analysis of variance, and Tukey’s test (p ≤ 0.05).
Results
The G_Ketac 0% and G_Fuji0% groups presented higher Ra (4.05 and 2.72) and Sa (4.76 and 5.16), respectively. No inhibition zone was observed, and the incorporation of graphene reduced radiopacity. Moreover, there was no influence on the solubility and water sorption after 21 days. A greater fluoride release was observed in the period of 7 days for most of the groups. After 21 days, G_Ketac 5%, 2%, and 1% presented higher releasing than 0% and 0.5% (p ≤ 0.05).
Conclusions
The graphene incorporation improved the microhardness of GICs in lower concentrations. Graphene incorporation to GICs modified some physical-mechanical, and chemical, but not affected biological properties.

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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

Abstract PDF PubReader ePub

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

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Impact of Repeated Use on Cyclic and Torsional Fatigue of 3 Rotary Files: Implications for Clinical Safety
Raimundo Sales de Oliveira Neto, Rafael da Rocha Tavares Duarte, Marco Antonio Hungaro Duarte, Guilherme Ferreira da Silva, Murilo Priori Alcalde, Leonardo Rigoldi Bonjardim
Journal of Endodontics.2025; 51(7): 954. CrossRef
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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