Present status of titanium removable dentures – a review of the literature*

Ohkubo, Chikahiro; Hanatani, Shigeru; Hosoi, Toshio

doi:10.1111/j.1365-2842.2007.01821.x

Cited by 62 publications

(35 citation statements)

References 61 publications

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“…Numerous titanium base alloys have been successfully employed in the area of biomedical applications [9,[11][12][13][14][15][16][17]22,23]. A great number of these Ti-base alloys are being used as artificial joints of hips and knees, screws for fracture fixation, and bone plates to replace flawed parts in human bodies.…”

Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Sherif

Abdo

Alharthi

2020

Metals

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The beneficial effects of V addition on the corrosion of a newly manufactured Ti6AlxV (x = 2 wt %, 4 wt %, 6 wt %, and 8 wt %) alloys after various exposure periods in 3.5% NaCl solutions were reported. The Ti6AlxV were produced from their raw powders using mechanical alloying. Several electrochemical techniques such as electrochemical impedance spectroscopy, cyclic potentiodynamic polarization, and potentiodynamic current versus time at 300 mV experiments were conducted. The surface morphology and the elemental analysis were performed using scanning electron microscopy and energy dispersive X-ray analyses. All results were consistent with each other revealing that the increase of V content increases the resistance of the alloys against corrosion. The increase of corrosion resistance was achieved by the role of V in decreasing the rate of corrosion as a result of the formation of oxide films on the surface of the alloys. This effect was found to increase with prolonging the immersion time of the Ti6AlxV alloys in the test medium from 1 h to 24 h and further to 48 h. particularly in implantation systems [24][25][26]. Other titanium alloys like Ti6Al7Nb and Ti13Cu4.5Ni, in addition to the Ti6Al4V alloy, have been selected as the only choice for the use in orthopedic implants [27]. It has also been reported [28][29][30][31][32][33][34] that resistance versus corrosion in-vitro to form a stable oxide film in harsh media is the main reason for these alloys to be popular and applicable in the field of biomedical applications.In this work, we aimed to produce a series of Ti-base alloys, namely Ti6Al2V, Ti6Al4V, Ti6Al6V, and Ti6Al8V alloys, from its pure powders, and reported their corrosion after immersion in 3.5% NaCl solution for different periods of time, namely 1 h, 24 h, and 48 h. The effect of increasing V content within the fabricated alloys on their corrosion in the test solution was reported using various electrochemical techniques like polarization, electrochemical impedance spectroscopy, and potentiostatic current-time at 300 mV (Ag/AgCl). Other surface analysis methods, including scanning electron microscopy (SEM) images and energy dispersive X-ray (EDX) spectra, were performed to ensure the compositions, the surface morphology, and expected corrosion products that might be formed after corrosion due to the reaction between the surfaces of the alloys and the chloride test solution.

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Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Vanadium Additions on the Corrosion of Ti6AlxV Alloys in Chloride Solutions

Sherif

Abdo

Alharthi

2020

Metals

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“…In the past few decades, the increasing interest in using titanium in dentistry for bridges and crowns, metal-ceramic restorations, is due to its excellent properties of biocompatibility, low density, low thermal conductibility, mechanical behavior and corrosion resistant [2,3,4,5,6,7,8]. The good corrosion resistance of titanium is the result of the presence of a protective and self-adherent oxide film of a thickness of 2–6 nm formed on the titanium surface, which is mainly composed of titanium dioxide (TiO 2 ) [9,10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Titanium in Artificial Saliva by Lactic Acid

Wang

Chen

et al. 2014

Materials

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As one of the main products produced by oral microorganisms, the role of lactic acid in the corrosion of titanium is very important. In this study, the corrosion behavior of titanium in artificial saliva with and without lactic acid were investigated by open-circuit potentials (OCPs), polarization curves and electrochemical impedance spectroscopy (EIS). OCP firstly increased with the amount of lactic acid from 0 to 3.2 g/L and then tended to decrease from 3.2 to 5.0 g/L. The corrosion of titanium was distinctly affected by lactic acid, and the corrosion rate increased with increasing the amount of lactic acid. At each concentration of lactic acid, the corrosion rate clearly increased with increasing the immersing time. Results of scanning electron microscopy (SEM) also indicated that lactic acid accelerated the pitting corrosion in artificial saliva. A probable mechanism was also proposed to explain the experimental results.

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“…23,24 Titanium alloy (Ti6Al4V) and cobalt-chromium alloy (Co-Cr-Mo) are the most widely used alloys in modern dentistry. 25,26 They have excellent mechanical properties and biocompatibility. 27,28 Cobalt-chromium alloys are rigid and have relatively high elastic moduli.…”

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confidence: 99%