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titanium corrosion

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https://www.readbyqxmd.com/read/28809623/how-to-choose-between-the-implant-materials-steel-and-titanium-in-orthopedic-trauma-surgery-part-2-biological-aspects
#1
S M Perren, P Regazzoni, A A Fernandez
BIOLOGICAL ASPECTS OF STEEL AND TITANIUM AS IMPLANT MATERIAL IN ORTHOPEDIC TRAUMA SURGERY The following case from the ICUC database, where a titanium plate was implanted into a flourishing infection, represents the clinical experience leading to preferring titanium over steel. (Fig. 1) (6). Current opinions regarding biological aspects of implant function. The "street" opinions regarding the biological aspects of the use of steel versus titanium as a surgical trauma implant material differ widely. Statements of opinion leaders range from "I do not see any difference in the biological behavior between steel and titanium in clinical application" to "I successfully use titanium implants in infected areas in a situation where steel would act as foreign body "sustaining" infection...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28800964/the-effect-of-metal-ions-released-from-different-dental-implant-abutment-couples-on-osteoblast-function-and-secretion-of-bone-resorbing-mediators
#2
Ghada O Alrabeah, Peter Brett, Jonathan C Knowles, Haralampos Petridis
OBJECTIVES: The etiology of the reduced marginal bone loss observed around platform-switched implant-abutment connections is not clear but could be related to the release of variable amounts of corrosion products. The present study evaluated the effect of different concentrations of metal ions released from different implant abutment couples on osteoblastic cell viability, apoptosis and expression of genes related to bone resorption. METHODS: Osteoblastic cells were exposed to five conditions of culture media prepared containing metal ions (titanium, aluminum, vanadium, cobalt, chromium and molybdenum) in different concentrations representing the amounts released from platform-matched and platform-switched implant-abutment couples as a result of an earlier accelerated corrosion experiment...
August 4, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28798459/increased-levels-of-dissolved-titanium-are-associated-with-peri-implantitis-a-cross-sectional-study
#3
(no author information available yet)
As this study implicates a role for corrosion in peri-implantitis, there may be a clear distinction between the aetiology of peri-implantitis and periodontitis.
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28783506/nanoscale-silver-depositions-inhibit-microbial-colonization-and-improve-biocompatibility-of-titanium-abutments
#4
Supriya Kheur, Nimisha Singh, Dhananjay Bodas, Jean-Yves Rauch, Shantanu Jambhekar, Mohit Kheur, Jyutika Rajwade
Although titanium dental implants are biocompatible, exhibit excellent corrosion resistance and high mechanical resistance, the material fails in providing resistance to infection because it exhibits poor antimicrobial activity. To address these issues, we deposited silver onto titanium abutments (Grade 5 titanium discs) using direct current (DC) sputtering and assessed the antimicrobial activity and biocompatibility of the modified implant material. Atomic absorption spectrometry and X-ray photoelectron spectroscopy were employed to investigate the concentration and elemental composition of the deposited silver...
July 29, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28782236/porous-titanium-scaffolds-with-self-assembled-micro-nano-hierarchical-structure-for-dual-functions-of-bone-regeneration-and-anti-infection
#5
Lu Han, Menghao Wang, Honglong Sun, Peifei Li, Kefeng Wang, Fuzeng Ren, Xiong Lu
Porous titanium (Ti) scaffolds are widely used for bone repair because of their good biocompatibility, mechanical properties and corrosion resistance. However, pristine Ti scaffolds are bioinert and unable to induce bone regeneration. In this study, chitosan coated BSA nanoparticles (CBSA NPs) and oxidized alginate (OSA) were in a layer-by-layer (LbL) manner on Ti scaffolds. The LbL film possessed micro/nano hierarchical architectures, has the features of nanostructures, and possesses abundant functional groups from CBSA NPs and OSA to improve the surface biocompatibility and biofunctionality of Ti scaffolds...
August 7, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28773993/effect-of-glucose-concentration-on-electrochemical-corrosion-behavior-of-pure-titanium-ta2-in-hanks-simulated-body-fluid
#6
Shuyue Liu, Bing Wang, Peirong Zhang
Titanium and its alloys have been widely used as implant materials due to their excellent mechanical property and biocompatibility. In the present study, the effect of glucose concentration on corrosion behavior of pure titanium TA2 in Hanks' simulated body fluid is investigated by the electrochemical impedance spectrum (EIS) and potentiodynamic polarization methods. The range of glucose concentrations investigated in this research includes 5 mmol/L (limosis for healthy people), 7 mmol/L (after diet for healthy people), 10 mmol/L (limosis for hyperglycemia patient), and 12 mmol/L (after diet for hyperglycemia patient), as well as, 15 mmol/L and 20 mmol/L, which represent different body fluid environments...
October 26, 2016: Materials
https://www.readbyqxmd.com/read/28773971/a-fracture-analysis-of-ti-10mo-8v-1fe-3-5al-alloy-screws-during-assembly
#7
Weifang Zhang, Yuanxing Huang, Wei Dai, Xiaoshuai Jin, Chang Yin
Titanium screws have properties that make them ideal for applications that require both a high strength-to-weight ratio and corrosion resistance, such as fastener applications for aviation and aerospace. The fracture behavior of Ti-10Mo-8V-1Fe-3.5Al (TB3) alloy screws during assembly was explored. Besides visual examination, other experimental techniques used for the investigation are as follows: (1) fracture characteristics and damage morphology via scanning electron microscopy (SEM); (2) chemical constituents via energy dispersive spectroscopy (EDS) and hydrogen concentration testing; (3) metallographic observation; (4) stress durability embrittlement testing; and (5) torsion simulation testing...
October 19, 2016: Materials
https://www.readbyqxmd.com/read/28773939/surface-characterization-corrosion-resistance-and-in-vitro-biocompatibility-of-a-new-ti-hf-mo-sn-alloy
#8
Raluca Ion, Silviu Iulian Drob, Muhammad Farzik Ijaz, Cora Vasilescu, Petre Osiceanu, Doina-Margareta Gordin, Anisoara Cimpean, Thierry Gloriant
A new superelastic Ti-23Hf-3Mo-4Sn biomedical alloy displaying a particularly large recovery strain was synthesized and characterized in this study. Its native passive film is very thick (18 nm) and contains very protective TiO2, Ti2O3, HfO2, MoO2, and SnO2 oxides (XPS analysis). This alloy revealed nobler electrochemical behavior, more favorable values of the corrosion parameters and open circuit potentials in simulated body fluid in comparison with commercially pure titanium (CP-Ti) and Ti-6Al-4V alloy taken as reference biomaterials in this study...
October 4, 2016: Materials
https://www.readbyqxmd.com/read/28773095/in-vivo-damage-of-the-head-neck-junction-in-hard-on-hard-total-hip-replacements-effect-of-femoral-head-size-metal-combination-and-12-14-taper-design
#9
Massimiliano Baleani, Paolo Erani, Barbara Bordini, Federica Zuccheri, Mateusz Kordian Mąkosa, Dalila De Pasquale, Alina Beraudi, Susanna Stea
Recently, concerns have been raised about the potential effect of head-neck junction damage products at the local and systemic levels. Factors that may affect this damage process have not been fully established yet. This study investigated the possible correlations among head-neck junction damage level, implant design, material combination, and patient characteristics. Head-neck junctions of 148 retrieved implants were analysed, including both ceramic-on-ceramic (N = 61) and metal-on-metal (N = 87) bearings...
July 1, 2017: Materials
https://www.readbyqxmd.com/read/28772987/preparation-of-superhydrophobic-film-on-ti-substrate-and-its-anticorrosion-property
#10
Min Zhu, Wenchuan Tang, Luyao Huang, Dawei Zhang, Cuiwei Du, Gaohong Yu, Ming Chen, Thee Chowwanonthapunya
Superhydrophobic films were fabricated on a titanium substrate with or without anodizing by using a self-assembling method. Firstly, the pretreatments of mechanical polishing/anodizing or mechanical polishing only were conducted, respectively. Subsequently, the preparation of polydopamine film layer, deposition of nano-silver particles, and post modification of 1H,1H,2H,2H-perfluorodecanethiol were performed on the surface of the pretreated substrate. The surface morphologies, compositions, wettability, and corrosion resistance of the films were investigated with scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), water contact angle measurements, and electrochemical tests, respectively...
June 8, 2017: Materials
https://www.readbyqxmd.com/read/28772615/streptococcus-sanguis-biofilm-architecture-and-its-influence-on-titanium-corrosion-in-enriched-artificial-saliva
#11
Lei Li, Shunling Li, Qing Qu, Limei Zuo, Yue He, Baolin Zhu, Cong Li
Bacteria biofilm formation on metals is well-known, while biofilm architecture varies under different conditions. To date, few studies have determined the possible contribution to corrosion of titanium made by biofilm architecture. We investigated the interaction between the oral Streptococcus sanguis biofilm architecture and its influence on titanium corrosion in enriched artificial saliva using electrochemical methods and microscopic study. Patchy biofilms were observed on titanium surface after being immersed in solution containing S...
March 3, 2017: Materials
https://www.readbyqxmd.com/read/28772554/fretting-corrosion-behavior-of-experimental-ti-20cr-compared-to-titanium
#12
Tomofumi Sawada, Christine Schille, Atif Almadani, Jürgen Geis-Gerstorfer
Experimental cast titanium alloys containing 20 mass% chromium (Ti-20Cr) show preferable mechanical properties and a good corrosion resistance. This study evaluated the fretting corrosion behavior of Ti-20Cr. Ti-20Cr (n = 4) and commercially pure titanium (CP-Ti, n = 6) disk specimens were used. The fretting corrosion test was performed by electrochemical corrosion at 0.3 V in 0.9% saline solution and mechanical damage using 10 scratching cycles with three different scratching speeds (10-40 mm/s) at 10 N. After testing, the activation peak, repassivation time and surface morphology of each specimen were analyzed...
February 17, 2017: Materials
https://www.readbyqxmd.com/read/28772412/biocompatibility-and-inflammatory-potential-of-titanium-alloys-cultivated-with-human-osteoblasts-fibroblasts-and-macrophages
#13
Jana Markhoff, Martin Krogull, Christian Schulze, Christian Rotsch, Sandra Hunger, Rainer Bader
The biomaterials used to maintain or replace functions in the human body consist mainly of metals, ceramics or polymers. In orthopedic surgery, metallic materials, especially titanium and its alloys, are the most common, due to their excellent mechanical properties, corrosion resistance, and biocompatibility. Aside from the established Ti6Al4V alloy, shape memory materials such as nickel-titanium (NiTi) have risen in importance, but are also discussed because of the adverse effects of nickel ions. These might be reduced by specific surface modifications...
January 10, 2017: Materials
https://www.readbyqxmd.com/read/28771327/room-temperature-wet-chemical-synthesis-of-au-nps-tih2-nanocarved-ti-self-supported-electrocatalysts-for-highly-efficient-h2-generation
#14
Mohammed A Amin, Sahar A Fadlallah, Ghaida S Alosaimi, Emad M Ahmed, Nasser Y Mostafa, Pascal Roussel, Sabine Szunerits, Rabah Boukherroub
Self-supported electrocatalysts are a new class of materials exhibiting high catalytic performance for various electrochemical processes and can be directly equipped in energy conversion devices. We present here, for the first time, sparse Au NPs self-supported on etched Ti (nanocarved Ti substrate self-supported with TiH2) as promising catalysts for the electrochemical generation of hydrogen (H2) in KOH solutions. Cleaned, as-polished Ti substrates were etched in highly concentrated sulphuric acid solutions without and with 0...
August 3, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28766712/can-degradation-products-released-from-dental-implants-affect-peri-implant-tissues
#15
REVIEW
M Noronha Oliveira, W V H Schunemann, M T Mathew, B Henriques, R S Magini, W Teughels, J C M Souza
This study aimed to assess the literature available on the effects, on peri-implant tissues, of degradation products released from dental implants as a consequence of therapeutic treatment for peri-implantitis and/or of wear-corrosion of titanium. A literature review of the PubMed medline database was performed up to December 31, 2016. The following search terms were used: "titanium wear and dental implant"; "titanium corrosion and dental implant"; "bio-tribocorrosion"; "peri-implantitis"; "treatment of peri-implantitis"; "titanium particles release and dental implant"; and "titanium ion release and dental implant"...
August 2, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28765634/hybrid-organic-inorganic-coatings-via-electron-transfer-behaviour
#16
Wail Al Zoubi, Ji Hoon Min, Young Gun Ko
A novel method to functionalize the surface of inorganic coating by growing organic coating has been investigated based on microstructural interpretation, electrochemical assessment, and quantum chemical analysis. For this purpose, inorganic coating with magnesium aluminate, magnesium oxide, and titanium dioxide was prepared on magnesium alloy via plasma electrolytic oxidation (PEO), and, then, subsequent dip-coating method was used to tailor organic coating using diethyl-5-hydroxyisophthalate (DEIP) as organic molecules...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28755866/topographic-and-chemical-surface-modifications-to-metal-brackets-after-a-period-in-the-mouth
#17
Afaf Houb-Dine, Loubna Bahije, Youssef Oualalou, Hicham Benyahia, Fatima Zaoui
INTRODUCTION: In the current state of our knowledge, the effects of corrosion on the performance of orthodontic appliances and on patient health are far from clear. Awareness of these problems has led to a growing demand for nickel-free products. Titanium brackets were recently launched on the market as an alternative to stainless-steel brackets. However, the use of fluorides for caries prevention creates a risk of corrosion of these titanium appliances. The aim of this study is to examine the corrosion of stainless-steel and titanium brackets in clinical orthodontic use, focusing on the impact of fluorine...
July 26, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28743876/environmentally-stable-interface-of-layered-oxide-cathodes-for-sodium-ion-batteries
#18
Shaohua Guo, Qi Li, Pan Liu, Mingwei Chen, Haoshen Zhou
Sodium-ion batteries are strategically pivotal to achieving large-scale energy storage. Layered oxides, especially manganese-based oxides, are the most popular cathodes due to their high reversible capacity and use of earth-abundant elements. However, less noticed is the fact that the interface of layered cathodes always suffers from atmospheric and electrochemical corrosion, leading to severely diminished electrochemical properties. Herein, we demonstrate an environmentally stable interface via the superficial concentration of titanium, which not only overcomes the above limitations, but also presents unique surface chemical/electrochemical properties...
July 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28719860/liposome-modified-titanium-surface-a-strategy-to-locally-deliver-bioactive-molecules
#19
Vincenzo De Leo, Monica Mattioli-Belmonte, Maria Teresa Cimmarusti, Annamaria Panniello, Manuela Dicarlo, Francesco Milano, Angela Agostiano, Elvira De Giglio, Lucia Catucci
Titanium and its alloys are widely employed materials for implants in orthopedic or dental surgery due to their mechanical properties, resistance to corrosion and osseointegration capability. However adverse reactions at the tissue/implant interface may occur, which limit the success of the osseointegration process. Therefore, different strategies have to be used to overcome these drawbacks. In this work, we developed two different liposome-based coatings on titanium surfaces as drug or bioactive molecule deposits for dental/orthopedic implant applications...
July 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28694602/pseudarthrosis-due-to-galvanic-corrosion-presenting-as-subarachnoid-hemorrhage
#20
Rosemary Noel Beavers, Rishi Rajiv Lall, Juan Ortega Barnett, Sohum Kiran Desai
Two unlike metals near one another can break down as they move toward electrochemical equilibrium resulting in galvanic corrosion. We describe a case of electrochemical corrosion resulting in pseudarthrosis, followed by instrumentation failure leading to subarachnoid hemorrhage. A 53-year-old female with a history of cervical instability and two separate prior cervical fusion surgery with sublaminar cables presented with new onset severe neck pain. Restricted range of motion in her neck and bilateral Hoffman's was noted...
April 2017: Journal of Craniovertebral Junction and Spine
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