keyword
MENU ▼
Read by QxMD icon Read
search

titanium corrosion

keyword
https://www.readbyqxmd.com/read/28916465/corrosive-effects-of-fluoride-on-titanium-under-artificial-biofilm
#1
Azusa Fukushima, Gen Mayanagi, Keiichi Sasaki, Nobuhiro Takahashi
PURPOSE: This study aimed to investigate the effect of sodium fluoride (NaF) on titanium corrosion using a biofilm model, taking environmental pH into account. METHODS: Streptococcus mutans cells were used as the artificial biofilm, and pH at the bacteria-titanium interface was monitored after the addition of 1% glucose with NaF (0, 225 or 900ppmF) at 37°C for 90min. In an immersion test, the titanium samples were immersed in the NaF solution (0, 225 or 900ppm F; pH 4...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28913542/metal-release-profiles-of-orthodontic-bands-brackets-and-wires-an-in-vitro-study
#2
B Wendl, H Wiltsche, E Lankmayr, H Winsauer, A Walter, A Muchitsch, N Jakse, M Wendl, T Wendl
AIM: The present study evaluated the temporal release of Co Cr, Mn, and Ni from the components of a typical orthodontic appliance during simulated orthodontic treatment. MATERIALS AND METHODS: Several commercially available types of bands, brackets, and wires were exposed to an artificial saliva solution for at least 44 days and the metals released were quantified in regular intervals using inductively coupled plasma quadrupole mass spectrometry (ICP-MS, Elan DRC+, Perkin Elmer, USA)...
September 14, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28898721/multifunctional-zirconium-nitride-copper-multilayer-coatings-on-medical-grade-316l-ss-and-titanium-substrates-for-biomedical-applications
#3
D Dinesh Kumar, Gobi Saravanan Kaliaraj
Protecting from wear and corrosion of many medical devices in the biomedical field is an existing scientific challenge. Surface modification with multilayer ZrN/Cu coating was deposited on medical grade stainless steel (SS) and titanium substrates to enhance their surface properties. Structural results revealed that the ZrN/Cu coatings are highly crystalline and uniform microstructure on both the substrates. Dry and wet tribological measurements of the coated titanium substrate exhibit enhanced wear resistance and low friction coefficient due to the improved microstructure...
September 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28887488/the-chemical-form-of-metal-species-released-from-corroded-taper-junctions-of-hip-implants-synchrotron-analysis-of-patient-tissue
#4
Anna Di Laura, Paul D Quinn, Vasiliki C Panagiotopoulou, Harry S Hothi, Johann Henckel, Jonathan J Powell, Fitim Berisha, Fernanda Amary, J Fred W Mosselmans, John A Skinner, Alister J Hart
The mechanisms of metal release from the articulation at the head cup bearing and the tapered junctions of orthopaedic hip implants are known to differ and the debris generated varies in size, shape and volume. Significantly less metal is lost from the taper junction between Cobalt-Chromium-Molybdenum (CoCrMo) and Titanium (Ti) components (fretting-corrosion dominant mechanism), when compared to the CoCrMo bearing surfaces (wear-corrosion dominant mechanism). Corrosion particles from the taper junction can lead to Adverse Reactions to Metal Debris (ARMD) similar to those seen with CoCrMo bearings...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28861392/the-effect-of-fluoride-containing-oral-rinses-on-the-corrosion-resistance-of-titanium-alloy-ti-6al-4v
#5
Gui-Yue Huang, Heng Bo Jiang, Jung-Yul Cha, Kwang-Mahn Kim, Chung-Ju Hwang
OBJECTIVE: The purpose of this study was to examine the effect of commercially available fluoride-containing oral rinses on the corrosion behavior of titanium alloys, which are the main components of orthodontic miniscrews. METHODS: Four commercially available oral rinses (solution A, pH 4.46/260 ppm fluoride; solution B, pH 4.41/178 ppm fluoride; solution C, pH 6.30/117 ppm fluoride; and solution D, pH 4.17/3.92 ppm fluoride) were tested on titanium alloy (Ti-6Al-4V) circular plates, and saline was used as the control...
September 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28835600/titanium-removable-denture-based-on-a-one-metal-rehabilitation-concept
#6
Chikahiro Ohkubo, Yohei Sato, Yuichiro Nishiyama, Yasunori Suzuki
The use of a single metal for all restorations would be necessary because it protects against metal corrosion caused by the contact of different metals. For this "one-metal rehabilitation" concept, non-alloyed commercially pure (CP) titanium should be used for all restorations. Titanium frameworks have been cast and used for the long term without catastrophic failure, whereas they have been fabricated recently using computer-aided design/computer-aided manufacturing (CAD/CAM). However, the milling process for the frameworks of removable partial dentures (RPDs) is not easy because they have very complicated shapes and consist of many components...
August 24, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28834155/pit-initiation-on-nitinol-in-simulated-physiological-solutions
#7
Bruce G Pound
Inclusions appear to play a crucial role in the initiation of pitting on nitinol, but the reason remains unclear. Furthermore, it has not been established whether the type of inclusion is a central factor. In this study, potentiodynamic polarization together with scanning electron microscopy and energy dispersive X-ray spectroscopy were used to provide more insight into the initiation of pits on electropolished nitinol wire. Corrosion was limited to a single primary pit on each of the few wire samples that exhibited breakdown...
August 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28809623/how-to-choose-between-the-implant-materials-steel-and-titanium-in-orthopedic-trauma-surgery-part-2-biological-aspects
#8
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
#9
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
#10
(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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
keyword
keyword
45927
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"