scholarly journals A New Setup for Simulating the Corrosion Behavior of Orthodontic Wires

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3758
Author(s):  
Polydefkis Papaioannou ◽  
Mona Sütel ◽  
Katrin Hüsker ◽  
Wolf-Dieter Müller ◽  
Theodosia Bartzela
Keyword(s):  
Corrosion Behavior ◽  
Inductively Coupled Plasma ◽  
Material Selection ◽  
Dental Materials ◽  
Metal Alloy ◽  
Ion Release ◽  
Orthodontic Wires ◽  
Inductively Coupled ◽  
Testing Metal ◽  
Plasma Mass Spectrometry

The aim of this study was to create a new reliable setup to evaluate commercially available orthodontic wires used during orthodontic treatment. The setup includes various techniques applied for testing metal alloy materials. The materials were tested under extreme conditions to simulate their behavior in the mouth. The alloy composition of each wire was tested. The electrochemical (EC) testing and characterization of the corrosion performance of the wires was calculated by the electrochemical curves at pH = 1 in two different applied potentials to test the reaction of the material. The liquid collected after the EC measurements was analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) to verify the reliability of the EC curves and for a more accurate evaluation of the corrosion behavior of the wires. Therefore, the EC measurements were compared to the actual values obtained from the released ions found in the solution. At the end, a surface analysis was performed to detect corrosion on the wires. In conclusion, this study developed a setup to test and better understand the corrosion behavior and ion release of the orthodontic wires, metal alloy dental materials, and other metals used in the oral cavity. This method can contribute to dental material selection in patients with underlying health conditions.

Metal Ion Release and Cytotoxicity of Titanium Orthodontic Miniscrews

2017 ◽  
Vol 730 ◽  
pp. 141-147
Author(s):  
Katha Kosayadiloka ◽  
Nathaphon Tangjit ◽  
Suwannee Luppanapornlarp ◽  
Peerapong Santiwong
Keyword(s):  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
The Self ◽  
Cytotoxicity Test ◽  
Ion Release ◽  
Element Analysis ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Metal Ion Release ◽  
Plasma Mass Spectrometry

The aim of this study was to investigate the metal ion release and cytotoxicity of MU orthodontic miniscrews as well as two other brands of orthodontic miniscrews over time. Twenty-four orthodontic miniscrews were tested, divided into three groups of eight. Each sample extraction was performed following the ISO 10993-12:2012 method. Solutions were collected after 1, 7, and 30 days (T1, T2, and T3). The supernatants extracted from these three groups were added and exposed to mouse L929 fibroblastic cell line using an MTT cytotoxicity test. They were also tested for ion release by inductively coupled plasma-mass spectrometry (ICP-MS). Element analysis by energy-dispersive X-ray spectroscopy (EDS) was used to analyze the surfaces of the miniscrews. The quantification of three elements, namely, titanium (Ti), aluminum (Al), and vanadium (V) were assessed. The results indicated that there were no statistical differences between the self-made orthodontic miniscrews and those from two commercial groups (p<0.05). Throughout the testing period, the quantity of ions increased from T1 to T3. After 24 h, vanadium was the first to appear on the surface in small quantities in other two commercial groups. The self-made orthodontic miniscrews exhibited no toxic effects on living cells.

scholarly journals Cytotoxicity Comparison of the Nanoparticles Deposited on Latex Rubber Bands between the Original and Stretched State

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Jung-Hwan Lee ◽  
Eun-Jung Lee ◽  
Jae-Sung Kwon ◽  
Chung-Ju Hwang ◽  
Kyoung-Nam Kim
Keyword(s):  
Inductively Coupled Plasma ◽  
Dental Materials ◽  
Ni Nanoparticles ◽  
Gingival Fibroblasts ◽  
Inductively Coupled ◽  
Original Length ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Zn Ions ◽  
Latex Rubber

Understanding the biocompatibility of nanoparticles in dental materials is essential for their safe usage in the oral cavity. In this study, we investigated whether nanoparticles deposited on orthodontic latex rubber bands are involved in the induction of cytotoxicity. A method of stretching to three times (“3L”) the length of the latex rubber bands was employed to detach the particles using the original length (“L”) for comparison. The cytotoxicity tests were performed on extracts with mouse fibroblasts (L929) and human gingival fibroblasts (HGFs). Fourier transform infrared spectroscopy, ion chromatography, elemental analysis, and inductively coupled plasma mass spectrometry (ICP-MS) were performed to detect the harmful components in the extracts from rubber bands. There was a significant decrease in the cell viability in the “L” samples compared with the “3L” samples (P<0.05) in the L929 and HGF cells. This was due to the Ni single crystal nanoparticles (~50nm) from the inner surface of “L” samples that were detached in the “3L” samples as well as the Zn ion (~9 ppm) detected in the extract. This study revealed that the Ni nanoparticles, as well as Zn ions, were involved in the induction of cytotoxicity from the latex rubber bands.

scholarly journals Effect of the pH of artificial saliva on ion release from commercially pure titanium

2013 ◽  
pp. 207-215 ◽  
Author(s):  
Ivana Dimic ◽  
Ivana Cvijovic-Alagic ◽  
Marica Rakin ◽  
Aleksandra Peric-Grujic ◽  
Marko Rakin ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Ph Value ◽  
Artificial Saliva ◽  
Pure Titanium ◽  
Mechanical Resistance ◽  
Commercially Pure Titanium ◽  
Ion Release ◽  
Inductively Coupled ◽  
Commercially Pure ◽  
Plasma Mass Spectrometry

Due to their excellent characteristics, such as chemical inertness, mechanical resistance, low Young?s modulus, high corrosion resistance, and outstanding biocompatibility, titanium and its alloys are the most used metallic materials for biomedical applications. In dental practice, these materials have demonstrated success as biomedical devices which are used for repairing and replacing failed hard tissue. However, the oral cavity is constantly subjected to the changes in the pH value changes and such an environment is strongly corrosive for titanium dental implants. The objective of this study was to examine ion release from commercially pure titanium (cpTi) in artificial saliva with different pH values (4.0, 5.5 and 7.5). The concentrations of released titanium ions were determined after 1, 3 and 6 weeks using Inductively Coupled Plasma - Mass Spectrometry. The results indicate that the ion release from commercially pure titanium in the artificial saliva is dependent both on the pH of artificial saliva and duration of immersion.

scholarly journals Does metal porosity affect metal ion release in blood and urine following total hip arthroplasty? A short term study

2018 ◽  
Vol 28 (5) ◽  
pp. 522-530 ◽  
Author(s):  
Alessandro Bistolfi ◽  
Andrea Cimino ◽  
Gwo-Chin Lee ◽  
Riccardo Ferracini ◽  
Giovanni Maina ◽  
...  
Keyword(s):  
Surface Area ◽  
Acetabular Component ◽  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
Titanium Implants ◽  
Ion Release ◽  
Inductively Coupled ◽  
Metal Ion Release ◽  
Metal Levels ◽  
Plasma Mass Spectrometry

Introduction: The surface area of exposed metal in a trabecular-titanium acetabular component is wider compared to traditional-titanium implants. The purpose of this study is to establish if this increase in surface area can lead to a significant increase in systemic metal levels. Methods: 19 patients with conventional acetabular component and 19 with trabecular-titanium cup were compared. Aluminum, Vanadium and Titanium in blood and urine were assessed before surgery and at intervals for 2 years. The samples were analysed using an inductively coupled plasma mass spectrometry. Results: Patients with trabecular-titanium did not have significantly higher metal ion levels compared to patients with conventional cups up to 2 years. A trend over time was statistically significant in both blood and urine for aluminum and titanium concentrations. Conclusions: The three-dimensionality and the wide surface of the trabecular-titanium acetabular component did not affect metal ion release compared to traditional implants after 2 years.

scholarly journals Silver Nanoparticles Stable to Oxidation and Silver Ion Release Show Size-Dependent Toxicity In Vivo

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1516
Author(s):  
Brittany Cunningham ◽  
Arek E. Engstrom ◽  
Bryan J. Harper ◽  
Stacey L. Harper ◽  
Marilyn R. Mackiewicz
Keyword(s):  
Silver Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Lipid Membrane ◽  
Surface Oxidation ◽  
Ion Release ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
The Stability

Silver nanoparticles (AgNPs) are widely used in commerce, however, the effect of their physicochemical properties on toxicity remains debatable because of the confounding presence of Ag+ ions. Thus, we designed a series of AgNPs that are stable to surface oxidation and Ag+ ion release. AgNPs were coated with a hybrid lipid membrane comprised of L-phosphatidylcholine (PC), sodium oleate (SOA), and a stoichiometric amount of hexanethiol (HT) to produce oxidant-resistant AgNPs, Ag–SOA–PC–HT. The stability of 7-month aged, 20–100 nm Ag–SOA–PC–HT NPs were assessed using UV–Vis, dynamic light scattering (DLS), and inductively coupled plasma mass spectrometry (ICP-MS), while the toxicity of the nanomaterials was assessed using a well-established, 5-day embryonic zebrafish assay at concentrations ranging from 0–12 mg/L. There was no change in the size of the AgNPs from freshly made samples or 7-month aged samples and minimal Ag+ ion release (<0.2%) in fishwater (FW) up to seven days. Toxicity studies revealed AgNP size- and concentration-dependent effects. Increased mortality and sublethal morphological abnormalities were observed at higher concentrations with smaller nanoparticle sizes. This study, for the first time, determined the effect of AgNP size on toxicity in the absence of Ag+ ions as a confounding variable.

Sign in / Sign up

Export Citation Format

Share Document