Ultrastructural Characterization of the Titanium Surface Degree IV in Dental Implant Aluminum Free (Acid Attack)

Brum, Igor da Silva; Carvalho, Marco Antônio Alencar De; Santos, P.; Devita, Renan Lana; Pires, Jorge Luiz da Silva; Carvalho, Jorge José de

doi:10.4236/jbnb.2020.113009

Cited by 4 publications

(3 citation statements)

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“…e surface morphology, energy, roughness, and type of oxide influence the interaction of the biomaterial with proteins and cells and the osseointegration mechanisms [15,16]. Different types of dental implant surface treatments were developed to improve cell response and osseointegration [17,18]. For example, acid etching, calcium phosphate blasting, Al 2 O 3 blasting, Al 2 O 3 blasting + surface acid treatment, TiO 2 blasting + surface treatment with hydrofluoric acid, and anodizing were developed for dental implant osseointegration improvement [1].…”

Section: Resultsmentioning

confidence: 99%

“…Surfaces with high roughness (Ra > 2.0 μm) have little osseointegration. Titanium surfaces with moderate roughness (Ra � 1.0-1.5 μm) have better osseointegration and higher implant success rates [1,14,18].…”

Section: Resultsmentioning

confidence: 99%

“…Acid etching dental implant surface treatment can be done alone or after any blasting process, increasing the level and percentage of bone formation on the dental implant surface [14][15][16][17][18]. e objectives of dental implant surface acid treatment are to change the surface roughness, improve protein-surface interactions, and increase primary stability (mechanical), secondary stability (osseointegration), and tertiary stability (bone remodeling).…”

Section: Resultsmentioning

confidence: 99%

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Galvanic Corrosion of Ti Dental Implants Coupled to CoCrMo Prosthetic Component

Soares

Elias

Monteiro

et al. 2021

International Journal of Biomaterials

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Dental implant systems are composed of an implant, prosthetic components, and a crown. Since the implants are made of commercially pure Ti (cp Ti) and prosthetic components are often made of Ti and CoCrMo alloys, a galvanic couple between these two devices may lead to galvanic corrosion, ions release, and even loss of the implant. This study aimed to investigate the corrosion resistance and measure the galvanic potential between cp Ti alloys (annealed microstructured cp Ti G4 and cold-worked nanostructured cp Ti G4) and a CoCrMo alloy. The corrosion resistance has been characterized by measuring the open circuit potential, the potentiodynamic polarization, the potentiostatic polarization, and the zero-resistance current. The cp Ti has been tested before and after a surface acid treatment. The samples’ surfaces have been examined by scanning electron microscopy, and their surface roughness has been measured by a 3D optical profilometer. The polarization results showed that the CoCrMo alloy showed lower corrosion resistance than cp Ti. The surface acid treatment improves dental implant corrosion resistance. The galvanic analysis showed that the cp Ti without surface treatment behaved as an anode and after the acid treatment has a cathodic behavior in relation to the CrCoMo alloy. The highest value of galvanic current was cp TiG4 acid etched in contact with CoCrMo, in pH 2 solution. The galvanic couple with the lowest current has been the nanostructured cp Ti in contact with CoCrMo alloy.

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