scholarly journals Surface Alterations Induced on Endodontic Instruments by Sterilization Processes, Analyzed with Atomic Force Microscopy: A Systematic Review

2019 ◽  
Vol 9 (22) ◽  
pp. 4948 ◽  
Author(s):  
Mario Dioguardi ◽  
Vito Crincoli ◽  
Luigi Laino ◽  
Mario Alovisi ◽  
Enrica Laneve ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Primary Outcome ◽  
Meta Analysis ◽  
Surface Characteristics ◽  
Cyclic Fatigue ◽  
Secondary Outcome ◽  
Eligibility Criteria ◽  
Force Microscopy ◽  
Atomic Force ◽  
Surface Alteration

Endodontic canal disinfection procedures that use sodium hypochlorite, and subsequently, heat sterilization procedures can alter the surface of endodontic instruments, described as corrosion and micropitting. These phenomena can be visualized on the surface of the instruments by SEM and atomic force microscopy analyses. The endodontic instruments used in probing, pre-enlargement, and shaping phases are made of steel alloy or nickel-titanium alloy (NiTi) and are subject to torsional, flexor, and cyclic fatigue; indeed, reuse of these instruments must be done with the knowledge that these instruments are subject to fracture following stress caused during their use. Fracture of the instrument within the canal is an eventuality that can lead to failure of the treatment, and therefore it is important to try to reduce situations that can contribute to the fracture. This review was performed based on the PRISMA protocol. Studies were identified through bibliographic research using electronic databases. A total of 1036 records were identified on the PubMed and Scopus databases. After screening the articles, restricted by year of publication (1979 to 2019), there were 946 records. With the application of the eligibility criteria (all the articles pertaining to the issue of sterilization in endodontics), there were 228 articles. There were 104 articles after eliminating overlaps. There were 50 articles that discussed the influence of sterilization procedures on the surface characteristics of endodontic instruments, and 26 articles that measured parameters on surface alteration. Applying the inclusion and exclusion criteria resulted in a total of eleven articles for quantitative analysis. Four articles were in reference to the primary outcome, eight articles to secondary outcome, and five articles to tertiary outcome. The meta-analysis showed a statistically significant surface alteration effect after five autoclaves and after immersion in the canal irrigants after 10 min.

scholarly journals Clay surface characteristics using atomic force microscopy

2018 ◽  
pp. 23-34 ◽  
Author(s):  
Ricardo Andrés García-León ◽  
◽  
Eder Norberto Flórez-Solano ◽  
Carlos Humberto Acevedo-Peñaloza ◽  
◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Surface Characteristics ◽  
Force Microscopy ◽  
Clay Surface ◽  
Atomic Force

Adhesive surface characteristics of bitumen binders investigated by Atomic Force Microscopy

Fuel ◽  
2013 ◽  
Vol 113 ◽  
pp. 248-256 ◽  
Author(s):  
Åsa Laurell Lyne ◽  
Viveca Wallqvist ◽  
Björn Birgisson
Keyword(s):  
Atomic Force Microscopy ◽  
Surface Characteristics ◽  
Force Microscopy ◽  
Atomic Force ◽  
Adhesive Surface

Atomic Force Microscopy Study on WC 14Co and WC 14Co+CNT Coated Surfaces

2015 ◽  
Vol 766-767 ◽  
pp. 573-578
Author(s):  
K.N. Balan
Keyword(s):  
Atomic Force Microscopy ◽  
Surface Finish ◽  
Spray Coating ◽  
Surface Characteristics ◽  
Microscopy Study ◽  
Thermal Spray Coating ◽  
Force Microscopy ◽  
Coating Technique ◽  
Atomic Force ◽  
Detonation Gun

There are several methods to improve surface characteristics. Detonation Gun coating (D-Spray) is one of the popular method in thermal spray coating technique. Generally, to enhance the surface properties like wear and corrosion resistance, microhardness, surface finish etc.. D-Spray process was preferred. In this present study, the property of surface finish was considered for the coating powders of WC 14Co and WC 14Co+CNT. The Powder WC 14Co+CNT was prepared in a systematic way and coating process was carried out by using detonation gun coating technique. Scanning Electron Microscopy (SEM) had been done on the powders of with and without CNT and Atomic force Microscopy (AFM) analysis on the surface was done for various places on the surface. A significant effect on the surface finish was exhibited.

Monitoring TiO2 Nanotubes Elaboration Condition, a Way for Obtaining Various Characteristics of Nanostructures

2009 ◽  
Vol 415 ◽  
pp. 9-12 ◽  
Author(s):  
Diana Portan ◽  
D. Ionita ◽  
Ioana Demetrescu
Keyword(s):  
Atomic Force Microscopy ◽  
Tio2 Nanotubes ◽  
Surface Characteristics ◽  
Electrolyte Composition ◽  
Surface Features ◽  
Force Microscopy ◽  
Atomic Force ◽  
Elaboration Condition

In this paper the elaboration and characterization of TiO2 nanotubes as a function of anodizing conditions are studied taking into consideration electrolyte composition and voltage. The obtained results show that the nanotubes dimensions and surface features depend on elaboration conditions. The technique of surface characteristics investigation (2D and 3 D images) was atomic force microscopy which permitted roughness and porosity evaluation.

scholarly journals Novel Zirconia Surface Treatments for Enhanced Osseointegration: Laboratory Characterization

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Ola H. Ewais ◽  
Fayza Al Abbassy ◽  
Mona M. Ghoneim ◽  
Moustafa N. Aboushelib
Keyword(s):  
Surface Roughness ◽  
Atomic Force Microscopy ◽  
Surface Hardness ◽  
Surface Characteristics ◽  
Low Pressure ◽  
Surface Treatments ◽  
Control Surface ◽  
Force Microscopy ◽  
Atomic Force ◽  
Zirconia Implants

Purpose. The aim of this study was to evaluate three novel surface treatments intended to improve osseointegration of zirconia implants: selective infiltration etching treatment (SIE), fusion sputtering (FS), and low pressure particle abrasion (LPPA). The effects of surface treatments on roughness, topography, hardness, and porosity of implants were also assessed.Materials and Methods. 45 zirconia discs (19 mm in diameter × 3 mm in thickness) received 3 different surface treatments: selective infiltration etching, low pressure particle abrasion with 30 µm alumina, and fusion sputtering while nontreated surface served as control. Surface roughness was evaluated quantitatively using profilometery, porosity was evaluated using mercury prosimetry, and Vickers microhardness was used to assess surface hardness. Surface topography was analyzed using scanning and atomic force microscopy (α=0.05).Results. There were significant differences between all groups regarding surface roughness (F=1678,P<0.001), porosity (F=3278,P<0.001), and hardness (F=1106.158,P<0.001). Scanning and atomic force microscopy revealed a nanoporous surface characteristic of SIE, and FS resulted in the creation of surface microbeads, while LPPA resulted in limited abrasion of the surface.Conclusion. Within the limitations of the study, changes in surface characteristics and topography of zirconia implants have been observed after different surface treatment approaches. Thus possibilities for enhanced osseointegration could be additionally offered.

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