Anodized Tantalum Surfaces for Orthopedic Applications

2018-04-30
Uslu, Ece
Ercan, Batur
Currently used implant materials do not suffice the needs of patients mainly due to their poor osseointegration with the juxtaposed bone tissue, which ultimately leads to failure of the implant. To overcome this issue, better orthopedic implants exhibiting bioactive characteristics are required. Tantalum is a good candidate as a new generation orthopedic implant materials due to its superior mechanical and chemical properties compared to the currently-used metallic implant materials. However, its bioinert nature prevents formation of firm and lasting interface with the juxtaposed bone. Herein, tantalum was anodized using different concentrations of aqueous and concentrated H2SO4-HF electrolytes under 10-30V electrical potential up to 2 hours to fabricate bioactive nanotubular, nanocoral and nanodimple surface morphologies on tantalum. To examine the bioactivity of the surface, simulated body fluid analysis was conducted up to 21 days. Findings showed that nanofeatured tantalum surfaces promote formation of CaP minerals.
19th International Metallurgy & Materials Congress

Suggestions

Passive Haptic Interface with MR-Brakes for Dental Implant Surgery
Senkal, Doruk; Gurocak, Hakan; Konukseven, Erhan İlhan (MIT Press - Journals, 2011-06-01)
In this research a passive haptic interface is explored as a surgical aid for dental implant surgery. The placement of a dental implant is critical since positioning mistakes can lead to permanent damage in the nerves controlling the lips, long lasting numbness, and failure of the implant and the crown on it. Haptic feedback to the surgeon in real time can decrease dependence on the surgeon's skill and experience for accurate implant positioning and increase the overall safety of the procedure. The develope...
Selenium doped calcium phosphate biomimetic coating on Ti6Al4V orthopedic implant material for anti-cancer and anti-bacterial purposes
Yılmaz, Bengi; Evis, Zafer; Banerjee, Sreeparna; Department of Biomedical Engineering (2014)
In order to prevent recurrent osteosarcoma in patients undergone surgical resection for implant insertion and infection around implant site, which is a very common complication after surgery, it is very important to functionalize the surface. In this study, to combine the effective antioxidant and potential anti-cancer and anti-bacterial properties of selenium with the high biocompatibility and bioactivity of hydroxyapatite, selenium was added to the structure of hydroxyapatite via biomimetic method and coa...
Immobilization of heparin on chitosan-grafted polyurethane films to enhance anti-adhesive and antibacterial properties
Kara, Filiz; AKSOY, EDA AYŞE; ÇALAMAK, SEMİH; Hasırcı, Nesrin; AKSOY, SERPİL (2016-01-01)
Infections caused by bacteria adhering to implant surfaces are one of the main reasons for the failure of the implants. In this study, polyurethane (PU), which is the most commonly used polymer in the production of medical devices, was synthesized and surfaces of polyurethane films were modified by chitosan (CH) grafting and heparin (Hep) immobilization in order to enhance anti-adhesiveness and antibacterial properties. Functional groups present on the surface, topographical shapes, and free energies of the...
Resorbable PCEC/gelatin-bismuth doped bioglass-graphene oxide bilayer membranes for guided bone regeneration
Pazarçeviren, Ahmet Engin; Evis, Zafer; Keskin, Dilek; Tezcaner, Ayşen (IOP Publishing, 2019-05-01)
Guided bone regeneration (GBR) is a therapeutic modality applied prior to dental implant placement to increase bone density at the defect site or during placement for directing bone growth around implant. In this study, an asymmetric, bilayer structure was prepared by covalently bonding a dense polycaprolactone-polyethylene glycol-polycaprolactone (PCEC) membrane layer with a hydrogel layer composed of bismuth doped bioactive glass (BG, 45S5) and graphene oxide (GO) particles incorporated in gelatin. Struct...
Tissue engineered cartilage on collagen and PHBV matrices
Kose, GT; Korkusuz, F; Ozkul, A; Soysal, Y; Ozdemir, T; Yildiz, C; Hasırcı, Vasıf Nejat (2005-09-01)
Cartilage engineering is a very novel approach to tissue repair through use of implants. Matrices of collagen containing calcium phosphate (CaP-Gelfix (R)), and matrices of poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) (PHBV) were produced to create a cartilage via tissue engineering. The matrices were characterized by scanning electron microscopy (SEM) and electron diffraction spectroscopy (EDS). Porosity and void volume analysis were carried out to characterize the matrices. Chondrocytes were isola...
Citation Formats
E. Uslu and B. Ercan, “Anodized Tantalum Surfaces for Orthopedic Applications,” presented at the 19th International Metallurgy & Materials Congress, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77760.