Influence of chemical composition on cell viability on titanium surfaces: A systematic review

Tardelli, Juliana Dias Corpa; Valente, Mariana Lima da Costa; Oliveira, Thaísa Theodoro de; Reis, Andréa Cândido dos

doi:10.1016/j.prosdent.2020.02.001

Cited by 35 publications

(34 citation statements)

References 35 publications

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“…This process can generate a more uniform coating than that obtained by passivation. Moreover, anodization reduces the cost of finished products in comparison to PEO because it can be applied to big pieces [14][15][16]. The anodization technique is a fast and low-cost technique that allows a more effortless and uniform growth of the passive layer, giving good control of its thickness, composition, and morphology [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion of Titanium and Titanium Alloys Anodized in H2SO4 and H3PO4 Solutions

et al. 2022

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Titanium and its alloys have superior electrochemical properties compared to other alloy systems due to the formation of a protective TiO2 film on metal surfaces. The ability to generate the protective oxide layer will depend upon the type of alloy to be used. The aim of this work was to characterize the electrochemical corrosion behavior of titanium Ti-CP2 and alloys Ti-6Al-2Sn-4Zr-2Mo, Ti-6Al-4V, and Ti Beta-C. Samples were anodized in 1 M H2SO4 and H3PO4 solutions with a current density of 0.025 A/cm2. Electrochemical tests on anodized alloys were carried out using a three-electrode cell and exposed in two electrolytes, i.e., 3.5% wt. NaCl and 3.5% wt. H2SO4 solutions at room temperature. Scanning electron microscopy (SEM) was used to observe the morphology of anodized surfaces. The electrochemical techniques used were cyclic potentiodynamic polarization (CPP) and electrochemical noise (EN), based on the ASTM-G61 and G199 standards. Regarding EN, two methods of data analysis were used: the frequency domain (power spectral density, PSD) and time-frequency domain (discrete wavelet transform). For non-anodized alloys, the results by CCP and EN indicate icorr values of ×10−6 A/cm2. However, under anodizing conditions, the icorr values vary from ×10−7 to ×10−9 A/cm2. The PSD Ψ0 values are higher for non-anodized alloys, while in anodized conditions, the values range from −138/−122 dBi (A2·Hz−1)1/2 to −131/−180 dBi (A2·Hz−1)1/2. Furthermore, the results indicated that the alloys anodized in the H3PO4 bath showed an electrochemical behavior that can be associated with a more homogeneous passive layer when exposed to the 3.5% wt. NaCl electrolyte. Alloys containing more beta-phase stabilizers formed a less homogeneous anodized layer. These alloys are widely used in aeronautical applications; thus, it is essential that these alloys have excellent corrosion performance in chloride and acid rain environments.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion of Titanium and Titanium Alloys Anodized in H2SO4 and H3PO4 Solutions

et al. 2022

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“…Interestingly, some studies with cytology have demonstrated the presence of titanium particles in the peri-implant tissues [23,25] regardless of the presence of peri-implantitis or peri-implant mucositis. It has been suggested that this material accumulation may be the result of the corrosive process of the dental implants [29,30,32], implant-abutment friction at the installation of the implants, and/or implantoplasty [29,31,33,34]. The degree of titanium corrosion can be influenced by quality and quantity of saliva, diet, alloy polishing, genetics, oral hygiene, amount and distribution of the occlusal forces, and microbiota [29,30,32].…”

Section: Carcinogenic Mechanisms Associated With Osseointegrated Dental Implantsmentioning

confidence: 99%

Oral Cancer around Dental Implants: Are the Clinical Manifestations and the Oncogenic Mechanisms Unique?

Lopes-Santos¹,

Alberto²,

Filho³

et al. 2022

Dentistry

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Osseointegrated implants have been an optimal treatment option for dental rehabilitation of fully or partially edentulous patients. Although peri-implantitis remains as the most common local risk factor for dental implant failure, the development of oral cancer involving the soft tissue around the titanium may lead to early implants loss and impact the quality of life of the patient negatively. Oral squamous cell carcinoma (OSCC) is the most common malignancy among head and neck tumors. It has higher prevalence in men over 50 years old, and in tobacco and/or alcohol users. Unfortunately, oral cancer is often detected in advanced stages, when the treatment options are limited. Thus, OSCC typically has poor prognosis. Despite the recent advances in oral carcinogenesis understanding, the relationship between dental implants and the development of malignant lesions around them is not completely understood. It has been suggested that the titanium corrosion occurring at the top of dental implants causes the release of metal ions. These ions might lead to oral epithelial genetic damage and higher susceptibility of normal mucosa to malignant transformation. The aim of this chapter was to review the clinical characteristics, diagnosis, and the possible carcinogenic mechanisms involved in oral cancer around dental implants.

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“…Stupanj korozije za titanij znatno je manji od maksimalno prihvaćene brzine korozije za primjenu biomaterijala: < 0,02 mm/g u usporedbi s 0,13 mm/g 2 . Međutim, zabilježeno je da materijali od titanija mogu postati nekompatibilni i prouzročiti štetne učinke 37,38 . Znanje o fizikalno-kemijskom stanju elemenata oslobođenih uslijed korozije od velike je važnosti za toksikološku procjenu legura.…”

Section: Potencijalna Toksičnost Titanijaunclassified

Potencijalna toksičnost titanija

Dežulović

Jurešić

2021

Med. Flum. (Online)

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Titanij se široko primjenjuje zbog svoje biokompatibilnosti i dobrih biomehaničkih svojstava. Pokazuje dobru sposobnost vezanja za živo tkivo i kosti pa se često upotrebljava za zubne, ortopedske i srčane implantate. Upotrebljava se kao čisti titanij ili kao legura na bazi titanija, gdje dodatak drugog elementa titaniju omogućuje dobivanje boljih svojstava od samoga titanija. Unatoč inertnosti, titanij je i dalje podložan koroziji i otpuštanju štetnih metalnih iona u organizam. Većina studija pokazuje da je titanij izrazito biokompatibilni materijal, međutim određene studije ukazuju da materijali od titanija mogu postati nekompatibilni i prouzročiti štetne učinke. S obzirom na široku upotrebu titanija, javljaju se pitanja o mogućoj štetnosti titanija. Stoga je važno i dalje provoditi toksikološka ispitivanja, pomno procijeniti i ispitati potencijalnu štetnost titanija te provjeriti potencijalne zdravstvenerizike za ljude i za ekosustav.

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Influence of chemical composition on cell viability on titanium surfaces: A systematic review

Cited by 35 publications

References 35 publications

Electrochemical Corrosion of Titanium and Titanium Alloys Anodized in H2SO4 and H3PO4 Solutions

Electrochemical Corrosion of Titanium and Titanium Alloys Anodized in H2SO4 and H3PO4 Solutions

Oral Cancer around Dental Implants: Are the Clinical Manifestations and the Oncogenic Mechanisms Unique?

Potencijalna toksičnost titanija

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