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.

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 Alkaline Phosphatase Immobilization on New Chitosan Membranes with Mg2+ for Biomedical Applications

Marine Drugs ◽  
2018 ◽  
Vol 16 (8) ◽  
pp. 287 ◽  
Author(s):  
Gratiela Tihan ◽  
Roxana Zgarian ◽  
Elena Berteanu ◽  
Daniela Ionita ◽  
Georgeta Totea ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Metal Ions ◽  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
Biomedical Applications ◽  
Morphological Characteristics ◽  
Ion Release ◽  
Microscopy Technique ◽  
Metal Ion Release ◽  
Chitosan Membranes

In this paper, we present the fabrication and characterization of new chitosan-based membranes while using a new biotechnology for immobilizing alkaline phosphatase (ALP). This technology involved metal ions incorporation to develop new biopolymeric supports. The chemical structure and morphological characteristics of proposed membranes were evaluated by infrared spectroscopy (FT-IR) and the scanning electron microscopy technique (SEM). The inductively coupled plasma mass spectrometry (ICP-MS) evidenced the metal ion release in time. Moreover, the effect of Mg2+ on the enzymatic activity and the antibacterial investigations while using Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus bacteria, hemolysis, and biocompatibility behavior were studied. Immobilizing ALP into the chitosan membranes composition followed by the incorporation of Mg2+ led to polymeric supports with enhanced cellular viability when comparing to chitosan-based membranes without Mg2+. The results obtained evidenced promising performance in biomedical applications for the new biopolymeric supports that are based on chitosan, ALP, and metal ions.

scholarly journals Metal ion release from silver soldering and laser welding caused by different types of mouthwash

2014 ◽  
Vol 85 (4) ◽  
pp. 665-672 ◽  
Author(s):  
Ayse Tuygun Erdogan ◽  
Didem Nalbantgil ◽  
Feyza Ulkur ◽  
Fikrettin Sahin
Keyword(s):  
Laser Welding ◽  
Metal Ions ◽  
Sodium Fluoride ◽  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
Artificial Saliva ◽  
Ion Release ◽  
Sem Images ◽  
Metal Ion Release ◽  
Group Comparisons

ABSTRACT Objective:  To compare metal ion release from samples welded with silver soldering and laser welding when immersed into mouthwashes with different ingredients. Materials and Methods:  A total of 72 samples were prepared: 36 laser welded and 36 silver soldered. Four samples were chosen from each subgroup to study the morphologic changes on their surfaces via scanning electron microscopy (SEM). Each group was further divided into four groups where the samples were submerged into mouthwash containing sodium fluoride (NaF), mouthwash containing sodium fluoride + alcohol (NaF + alcohol), mouthwash containing chlorhexidine (CHX), or artificial saliva (AS) for 24 hours and removed thereafter. Subsequently, the metal ion release from the samples was measured with inductively coupled plasma mass spectrometry (ICP-MS). The metal ion release among the solutions and the welding methods were compared. The Kruskal-Wallis and analysis of variance (ANOVA) tests were used for the group comparisons, and post hoc Dunn multiple comparison test was utilized for the two group comparisons. Results:  The level of metal ion release from samples of silver soldering was higher than from samples of laser welding. Furthermore, greater amounts of nickel, chrome, and iron were released from silver soldering. With regard to the mouthwash solutions, the lowest amounts of metal ions were released in CHX, and the highest amounts of metal ions were released in NaF + alcohol. SEM images were in accord with these findings. Conclusions:  The laser welding should be preferred over silver soldering. CHX can be recommended for patients who have welded appliances for orthodontic reasons.

scholarly journals A Literature Review Study on Atomic Ions Dissolution of Titanium and Its Alloys in Implant Dentistry

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 368 ◽  
Author(s):  
Sammy Noumbissi ◽  
Antonio Scarano ◽  
Saurabh Gupta
Keyword(s):  
Dental Implants ◽  
Metal Ion ◽  
Titanium Implants ◽  
In Vitro Studies ◽  
Ion Release ◽  
Term Survival ◽  
Metal Ion Release

This review of literature paper was done in order to conduct a review of the literature and an assessment of the effects of titanium implant corrosion on peri-implant health and success in the oral environment. This paper evaluates and critically reviews the findings of the multiple in-depth in vivo and in vitro studies that are related to corrosion aspects of the titanium and its alloys. A literature survey was conducted by electronic search in Medline and studies that were published between 1940 and August 2018 were selected. The search terms used were types of corrosion, corrosion of titanium implants, titanium corrosion, metal ion release from the titanium implants, fretting and pitting corrosion, implant corrosion, peri implantitis, and corrosion. Both in vivo and in vitro studies were also included in the review. The search and selection resulted in 64 articles. These articles were divided on the basis of their context to different kinds of corrosion related to titanium dental implants. It is evident that metal ions are released from titanium and titanium alloy dental implants as a result of corrosion. Corrosion of implants is multifactorial, including electrical, chemical, and mechanical factors, which have an effect on the peri-implant tissues and microbiota. The literature surveyed showed that corrosion related to titanium and its alloys has an effect on the health of peri-implant soft and hard tissue and the long term survival of metal dental implants. It can be concluded that presence of the long-term corrosion reaction along with continuous corrosion leads to the release of ions into the peri-implant tissue but also to a disintegration of the implant that contribute to material fatigue and even fracture of the abutments and implant body or both. This combined impact of the corrosion, bacterial activity, chemical reactions, and functional stresses are to be looked at as important factors of implant failure. The findings can be used to explore the possible strategies of research to investigate the biological impact of implant materials.

scholarly journals Surface Morphology and Histopathological Aspects of Metallic Used Cardiovascular CoCr Stents

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1112
Author(s):  
George-Razvan Pandelea-Dobrovicescu ◽  
Mariana Prodana ◽  
Florentina Golgovici ◽  
Daniela Ionita ◽  
Maria Sajin ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Morphology ◽  
Inductively Coupled Plasma ◽  
Tissue Response ◽  
Histopathological Analysis ◽  
Toxic Response ◽  
Inductively Coupled ◽  
Metal Levels ◽  
Plasma Mass Spectrometry ◽  
Tem Method

In this study, CoCr cardiovascular metallic stents with the same chemical composition as well as the adjacent tissues were analyzed. Recovered stents and adjacent tissues were characterized by surface morphology techniques like light microscopy (LM), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDS) and transmission electron microscopy (TEM). The presence of metals in the tissue from around explanted stent was also confirmed by TEM method. The released metal ions were measured using inductively coupled plasma mass spectrometry (ICP-MS). Histopathological analysis was used to highlight host tissue response to the implanted stents. EDX analysis revealed that 21 stents had the same composition. The quantities of Cr ions detected in the tissues were between 5 and 14 ppb and for Co ions were between 4 and 10 ppb. The tissue sections near the layers that generated large quantities of ions showed restenosis development and the deposits of surface calcifications were highlighted. The heavy metal levels observed in this study due to corrosion are too low to cause a systemic toxic response.

Analysis of metal ion impurities in liquid crystals using high resolution inductively coupled plasma mass spectrometry

2012 ◽  
Vol 4 (11) ◽  
pp. 3631 ◽  
Author(s):  
Huan-Yi Hung ◽  
Chien-Wei Lu ◽  
Cheng-Yu Lee ◽  
Chain-Shu Hsu ◽  
You-Zung Hsieh
Keyword(s):  
Mass Spectrometry ◽  
Liquid Crystals ◽  
High Resolution ◽  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

Considerations of inductively coupled plasma mass spectrometry techniques for characterizing the dissolution of metal-based nanomaterials in biological tissues

2015 ◽  
Vol 30 (8) ◽  
pp. 1689-1705 ◽  
Author(s):  
Cheng-Kuan Su ◽  
Yuh-Chang Sun
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Metal Ion ◽  
Biological Systems ◽  
Biological Tissues ◽  
Widespread Application ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Toxic Responses ◽  
Ion Species

Dissolution of metal-based nanomaterials (MNMs) leads to the release of metal ion species; this phenomenon is a major concern affecting the widespread application of MNMs because it can affect their subsequent biodistribution patterns and toxic responses toward living biological systems.

scholarly journals A Review of Metal Levels in Urban Dust, Their Methods of Determination, and Risk Assessment

Atmosphere ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 891
Author(s):  
Chikumbusko Chiziwa Kaonga ◽  
Ishmael Bobby Mphangwe Kosamu ◽  
Wells Robert Utembe
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Inductively Coupled Plasma ◽  
Urban Dust ◽  
Risk Levels ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Metal Levels ◽  
Plasma Mass Spectrometry

This review gives insights into the levels of metals in urban dust, their determination methods, and risk assessment. Urban dust harbors a number of pollutants, including heavy metals. There are various methods used for the sampling of urban dust for heavy-metal analysis and source-apportionment purposes, with the predominant one being the use of plastic sampling materials to avoid prior contamination. There are also various methods for the determination of metals, which include: atomic absorption spectroscopy (AAS) and inductively coupled plasma-mass spectrometry (ICP-MS), among others. Studies have shown that pollutants in urban dust are mainly derived from industrial activities and coal combustion, whereas traffic emissions are also an important, but not a predominant source of pollution. The varying particle-size distribution of urban dust and its large surface area makes it easier for the deposition and transport of heavy metals. Risk-assessment studies have shown that metals in urban dust could cause such problems as human pulmonary toxicity and reduction of invertebrate populations. The risk levels seem to be higher in children than adults, as some studies have shown. It is therefore important that studies on metals in urban dust should always incorporate risk assessment as one of the main issues.

Comparison of Corrosion Products from Implant and Various Gold-based Abutment Couplings: The Effect of Gold Plating

2020 ◽  
Author(s):  
Matilde Duarte Silva ◽  
Terry R. Walton ◽  
Ghada O. Alrabeah ◽  
Danielle M. Layton ◽  
Haralampos Petridis
Keyword(s):  
Inductively Coupled Plasma ◽  
Crevice Corrosion ◽  
Structural Changes ◽  
Titanium Implants ◽  
High Concentration ◽  
Ion Release ◽  
Gold Plating ◽  
Inductively Coupled ◽  
Simulated Environment ◽  
Icp Ms

ABSTRACTThis study compared Ti, Pd, Pt, Au ion release following induced accelerated tribocorrosion from 3 gold alloy abutment groups coupled to titanium implants over time; investigated contacting surface structural changes; and explored the effect of gold plating. Three abutment groups: G (n=8, GoldAdaptTM, Nobel Biocare®), N (n=8, cast UCLA, Biomet3i™), P (n=8, cast UCLA, Biomet3i™, gold plated), coupled to implants (Nobel Biocare®), immersed in 1% lactic acid were cyclically loaded. Ions released (ppb) at T 1 , T 2 , T 3 , simulating 3, 5 and 12 months function were quantified by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and compared. Surface degradation and fretted particle composition after T 3 were evaluated with Scanning Electron Microscopy and Energy-dispersive X-ray Spectroscopy (SEM/EDX). ICP-MS data was non-parametric, expressed as medians and interquartile ranges. SEM/EDX showed pitting, crevice corrosion and fretted particles on the components. Released ion concentrations in all groups across time significantly decreased for Pd (p&lt;0.001, medians ranged 1.70 to 0.09), Pt (p=0.021, 0.55 to 0.00) and Au (p&lt;0.001, 1.01 to 0.00); and increased for Ti (p=0.018, 2.49 to 5.84). Total Ti release was greater than other ions combined for G (p=0.012, 9.86 vs 2.30) and N (p&lt;0.001, 13.59 vs 5.70), but not P (p=0.141, 8.21 vs 3.53). Total Ti release did not differ between groups (p=0.36), but was less variable across Group P. On average, total ion release was 13.77 (8.91 to 26.03 IQR) ppb across the 12-month simulation. Tribocorrosion of titanium implants coupled with gold abutments in a simulated environment was evidenced by fretted particles, pitting and crevice corrosion of the coupling surfaces and release of ions. More Ti was released compared with Pd, Pt and Au; and continued to increase with time. Abutment composition influenced ion release. Gold plated abutments appeared to subdue variation in and minimize high concentration spikes of titanium.

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