Corrosive properties of fluoride-containing odontologic gels against titanium

Toumelin-Chemla, Florence; Rouelle, François; Burdairon, G

doi:10.1016/0300-5712(95)00033-x

Cited by 185 publications

(124 citation statements)

References 9 publications

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“…or adjusted to 5.8 or 4.2 using a phthalate buffer solution [22]. The effect of fluoride ions, which are commonly used in dental preparations up to a concentration of 12500 ppm [17,18], was simulated by adding sodium fluoride. The fluoride ions concentration of 1000 ppm (0.053 mol l −1 ) was used for the environment with pH of 5.8.…”

Section: Methodsmentioning

confidence: 99%

“…These properties predetermine titanium as a first-choice metallic material in medical applications, yet it is not an ideal material. The main reason is that its Young's modulus is higher approximately by order of magnitude than that of cortical bone (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)). This is why current research in the field of metallic biomaterials focuses on the development of materials with a lower elasticity modulus.…”

Section: Introductionmentioning

confidence: 99%

“…Their negative effect on the stability of the passive layer of titanium, and in an acidic environment in particular, has been clearly proved [11][12][13][14][15][16][17][18]. However, only a small attention has as yet been devoted to Ti-based alloys with tantalum.…”

Section: Introductionmentioning

confidence: 99%

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Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

Fojt¹,

Joska²,

Hnilica³

2013

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Titanium exhibits high corrosion resistance in biological environments. The main objective of its alloying with beta-stabilizing elements is to decrease modulus of elasticity. It is important to preserve corrosion resistance. The presented study was aimed at corrosion properties of Ti15Ta and Ti30Ta alloys in comparison with titanium. Measurements were performed on titanium, both alloys and tantalum in the physiological solution without or with fluoride ions. Electrochemical study was based on electrochemical impedance spectroscopy. Corrosion behavior of the studied alloys was significantly influenced by titanium. In the physiological solution, both alloys displayed stable passivity. Titanium is highly sensitive to the presence of fluoride ions. Its alloying with tantalum had a positive effect under the given conditions, which applied particularly to the Ti30Ta alloy. Titanium-tantalum binary alloys are not considered for direct use, yet the knowledge of their behavior may contribute to a more rational design of alloy systems applicable in dental practice.K e y w o r d s : Ti-Ta alloys, corrosion, fluoride ions, surface analysis, impedance spectroscopy

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

Fojt¹,

Joska²,

Hnilica³

2013

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“…10 -12 Furthermore, titanium loses corrosion resistance in solutions containing fluoride. [13][14][15][16][17] Due to a cariostatic effect, the use of fluoride-containing products such as toothpastes, dental gels, and rinses have become common in our daily life. Fluoride inhibits bacterial metabolism after diffusing into the bacteria as hydrogen fluoride molecules when plaque is acidified.…”

Section: Introductionmentioning

confidence: 99%

“…18 The hydrofluoric acid (HF) so formed either inhibits bacteria or degrades titanium alloys by destroying the oxide layer. 15,19 The role of hydrogen atoms in the reported degradation and fracture of NiTi alloys is widely under discussion. 20 -22 Hydrogen absorption from oral fluids, diffusion inside the alloy, and formation of hydride are considered to be the main causes of hydrogen embrittlement.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effect of fluoride‐containing acetic acid on NiTi wires

Kwon¹,

Cho²,

Noh³

et al. 2004

J Biomed Mater Res

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The possibility of the formation of hydrofluoric acid by the reaction of fluoride with acetic acid seems natural in the oral cavity. The effect of an acidic fluoride solution on NiTi wires was investigated by testing microhardness and color changes on wires. For aesthetic reasons, the color change on wires was also evaluated. Wires were immersed in four different test solutions for 1 or 3 days. As-received wires were used as a reference. After immersion for 3 days, the microhardness of the tested wires increased 1.8% to 10.4% compared to that of their as-received state. Wires immersed in a higher NaF concentration, lower pH solution with longer immersion yielded a more corroded surface than those of the counter cases. Wires showed a different color after immersion. However, after 3 days in solutions of pH 4, wires showed an appreciable color change regardless of the products. In test solutions, 3M wires showed the highest volumetric and percentage (0.59 for 0.05%; 1.19 for 0.2% solution) weight loss and G&H wires showed the least volumetric and percentage (0.43 for 0.05%; 1.05 for 0.2% solution) weight loss among tested wires. In pH 6 solutions, wires lost weight and were under the detection limit of the testing machine.

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The effect of trimethylol propane tetraacrylate (TMPTA) and organoclay loading on the properties of electron beam irradiated ethylene vinyl acetate (EVA)/natural rubber (SMR L)/organoclay nanocomposites

Ismail

Munusamy

Mariatti

et al. 2010

J of Applied Polymer Sci

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Ethylene vinyl acetate (EVA)/natural rubber (SMR L)/organoclay nanocomposites were prepared by melt blending technique with 0-10 phr organoclay loading and 3 phr TMPTA. Electron beam initiated crosslinking on these samples was carried out using a 3.0 MeV electron beam machine with doses ranging from 50 to 200 kGy. XRD results proved that dispersion of organoclay in the nanocomposites was slightly improved by irradiation with TMPTA. This was further supported by transmission electron microscopy images, where the nanoscale dispersion of organoclay was more homogenous throughout the irradiated polymer matrix compared to nonirradiated samples. TMPTA also increased the gel fraction yield, tensile properties and thermal stability of the irradiated neat EVA/SMR L and its nanocomposites. TMPTA was found to act as a crosslink initiator, which promotes crosslink bridges via free radical mechanism in EVA/SMR L matrix. SEM observation shows that the fracture behavior of the irradiated neat EVA/SMR L and its nanocomposites with TMPTA is significantly different compared to the fracture behavior of the nonirradiated neat EVA/SMR L. The distinct failure surface structure formed in the irradiated samples with TMPTA explains the overall higher value of tensile properties.

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Corrosive properties of fluoride-containing odontologic gels against titanium

Cited by 185 publications

References 9 publications

Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

Tantalum effect on the corrosion behavior of titanium-tantalum alloys in an environment containing fluoride ions

Evaluation of the effect of fluoride‐containing acetic acid on NiTi wires

The effect of trimethylol propane tetraacrylate (TMPTA) and organoclay loading on the properties of electron beam irradiated ethylene vinyl acetate (EVA)/natural rubber (SMR L)/organoclay nanocomposites

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