Electrochemical Interaction of TiNi-based Implant with Overlay Denture

Experimental electrochemical studies simulating the contact of a dental implant of titanium nickelide and metal frames of a denture covering an implant were carried out. The contact currents in artificial saliva were measured under stationary conditions and when updating the denture surface. Different amounts of the current depending on the denture frame material were registered.

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Ti-Ions and/or Particles in Saliva Potentially Aggravate Dental Implant Corrosion

Materials ◽

10.3390/ma14195733 ◽

2021 ◽

Vol 14 (19) ◽

pp. 5733

Author(s):

Mostafa Alhamad ◽

Valentim A. R. Barão ◽

Cortino Sukotjo ◽

Lyndon F. Cooper ◽

Mathew T. Mathew

Keyword(s):

Dental Implant ◽

Potential Risk ◽

Electrochemical Impedance ◽

Artificial Saliva ◽

Electrical Circuit ◽

Ion Concentration ◽

Limited Information ◽

Ti Particles ◽

Wear Products ◽

Tissue Reactions

The corrosive titanium products in peri-implant tissues are a potential risk factor for peri-implantitis. There is very limited information available on the effect of the corrosion and wear products on the dental implant corrosion. Therefore, we determined the influence of Ti-ions and Ti-particles on Ti corrosion. Eighteen commercially pure-Ti-grade-2 discs were polished to mirror-shine. Samples were divided into six groups (n = 3) as a function of electrolytes; (A) Artificial saliva (AS), (B) AS with Ti-ions (the electrolyte from group A, after corrosion), (C) AS with Ti-particles 10 ppm (D) AS with Ti-particles 20 ppm, (E) AS with Ti-ions 10 ppm, and (F) AS with Ti-ions 20 ppm. Using Tafel’s method, corrosion potential (Ecorr) and current density (Icorr) were estimated from potentiodynamic curves. Electrochemical Impedance Spectroscopy (EIS) data were used to construct Nyquist and Bode plots, and an equivalent electrical circuit was used to assess the corrosion kinetics. The corroded surfaces were examined through a 3D-white-light microscope and scanning electronic microscopy. The data demonstrated that the concentration of Ti-ions and corrosion rate (Icorr) are strongly correlated (r = 0.997, p = 0.046). This study indicated that high Ti-ion concentration potentially aggravates corrosion. Under such a severe corrosion environment, there is a potential risk of increased implant associated adverse tissue reactions.

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Bioactive Coating on Titanium Dental Implants for Improved Anticorrosion Protection: A Combined Experimental and Theoretical Study

Coatings ◽

10.3390/coatings9100612 ◽

2019 ◽

Vol 9 (10) ◽

pp. 612 ◽

Cited By ~ 8

Author(s):

Jozefina Katić ◽

Ankica Šarić ◽

Ines Despotović ◽

Nives Matijaković ◽

Marin Petković ◽

...

Keyword(s):

Dental Implant ◽

Density Functional ◽

Surface Characterization ◽

Electrochemical Impedance ◽

Artificial Saliva ◽

Titanium Implant ◽

Attenuated Total Reflection ◽

Implant Surface ◽

Bioactive Coating ◽

Dental Implant Surface

In recent years, extensive studies have been continuously undertaken on the design of bioactive and biomimetic dental implant surfaces due to the need for improvement of the implant–bone interface properties. In this paper, the titanium dental implant surface was modified by bioactive vitamin D3 molecules by a self-assembly process in order to form an improved anticorrosion coating. Surface characterization of the modified implant was performed by field emission scanning electron microscopy (FE-SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and contact angle measurements (CA). The implant’s electrochemical stability during exposure to an artificial saliva solution was monitored in situ by electrochemical impedance spectroscopy (EIS). The experimental results obtained were corroborated by means of quantum chemical calculations at the density functional theory level (DFT). The formation mechanism of the coating onto the titanium implant surface was proposed. During a prolonged immersion period, the bioactive coating effectively prevented a corrosive attack on the underlying titanium (polarization resistance in order of 107 Ω cm2) with ~95% protection effectiveness.

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Corrosion Resistance of Co-Cr-Mo Alloy Used in Dentistry

Archives of Metallurgy and Materials ◽

10.1515/amm-2015-0084 ◽

2015 ◽

Vol 60 (1) ◽

pp. 523-528 ◽

Cited By ~ 4

Author(s):

A. Łukaszczyk ◽

J. Augustyn-PieniąŻek

Keyword(s):

Corrosion Resistance ◽

Artificial Saliva ◽

Electrochemical Techniques ◽

Open Circuit ◽

Electrochemical Studies ◽

Brand Name ◽

Dental Alloys ◽

Casting Method ◽

Electrochemical Tests ◽

Dental Technician

Abstract The presented paper studies the effect of the casting technology on the corrosion resistance of Co-Cr-Mo alloy. The investigations were conducted on a commercial alloy with the brand name ARGELOY N.P SPECIAL (Co-Cr-Mo) produced by Argen as well as the same alloy melted and cast by the lost wax casting method performed by a dental technician. The corrosion behavior of the dental alloys in an artificial saliva was studied with the use of the following electrochemical techniques: open circuit potential and voltammetry. After the electrochemical tests, studies of the surface of the examined alloys were performed by means of a scanning electron microscope with an X-ray microanalyzer. The results of the electrochemical studies show that the dependence of the corrosion resistance on the microstructure associated with the recasting process is marginal. The results of the electrochemical studies of the considered alloy clearly point to their good corrosion resistance in the discussed environment.

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Electrochemical studies on the corrosion resistance of 18 K gold in artificial saliva, in the absence and presence of Gemer-2 tablet (orally taken by type 2 diabetes)

European Chemical Bulletin ◽

10.17628/ecb.2020.9.349-354 ◽

2020 ◽

Vol 9 (10-12) ◽

pp. 349

Author(s):

S. Christina Joycee ◽

K. Abiraami ◽

M. Archana Devi ◽

K. Chithra ◽

J. Ezhil Vanisha ◽

...

Keyword(s):

Type 2 Diabetes ◽

Corrosion Resistance ◽

Artificial Saliva ◽

Electrochemical Studies

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Electrochemical Corrosion Behavior of Dental/Implant Alloys in Artificial Saliva

Journal of Materials Engineering and Performance ◽

10.1007/s11665-008-9198-4 ◽

2008 ◽

Vol 17 (5) ◽

pp. 695-701 ◽

Cited By ~ 28

Author(s):

Mohit Sharma ◽

A.V. Ramesh Kumar ◽

Nirbhay Singh ◽

Nidhi Adya ◽

Bobin Saluja

Keyword(s):

Dental Implant ◽

Corrosion Behavior ◽

Artificial Saliva ◽

Electrochemical Corrosion ◽

Electrochemical Corrosion Behavior ◽

Implant Alloys

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In vitro Effects of Cyclic Dislodgement on Retentive Properties of Various Titanium-Based Dental Implant Overdentures Attachment System

Materials ◽

10.3390/ma12223770 ◽

2019 ◽

Vol 12 (22) ◽

pp. 3770

Author(s):

Kang ◽

Kim ◽

Kwon

Keyword(s):

Dental Implant ◽

Artificial Saliva ◽

Retentive Force ◽

Retention Force ◽

Retention Loss ◽

Oral Environment ◽

In Vitro Effects

The purpose of this study was to evaluate the change in the retentive forces of four different titanium-based implant attachment systems during the simulation of insert–removal cycles in an artificial oral environment. Five types of titanium-based dental implant attachment systems (Locator, Kerator, O-ring, EZ-Lock, and Magnetic) were studied (n = 10). The specimens underwent insert–removal cycles in artificial saliva, and the retentive force was measured following 0, 750, 1500, and 2250 cycles. Significant retention loss was observed in all attachment systems, except the magnetic attachments, upon completion of 2250 insertion and removal cycles, compared to the initial retentive force (p < 0.05). A comparison of the initial retentive forces revealed the highest value for Locator, followed by the Kerator, O-ring, EZ-Lock, and Magnetic attachments. Furthermore, Kerator demonstrated the highest retentive loss, followed by Locator, O-ring, EZ-Lock, and Magnetic attachments after 2250 cycles (p < 0.05). In addition, the Locator and Kerator systems revealed significant decrease in retentive forces at all measurement points (p < 0.05). The retention force according to the insert–removal cycles were significantly different according to the types of dental implant attachment systems.

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