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Biological performance of tantalum.

Biological performance of tantalum.

Clinical materials (1993-12-09)

J Black

ABSTRACT

A detailed literature search was carried out to define the current knowledge about the biological performance of tantalum. The pure metal appears, to a great degree, to be inert both in vivo and in vitro. Both the pure metal and its principle oxide possess low solubility and toxicity; however, halide compounds are more biologically active. Local host response is benign, characterized by vital encapsulation in soft tissue and frequent osteointegration, reminiscent of titanium, in hard tissue. Tantalum has been in clinical use since before 1940 and has found a wide range of diagnostic and implant applications, with apparently overall excellent results. In some applications, such as for radiographic bone markers and cranial closure, tantalum may well be the current material of choice. In summary, metallic tantalum is a promising biomaterial whose applications have been limited by technical rather than biological performance considerations.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

Tantalum, powder, −325 mesh, 99.9% trace metals basis

Sigma-Aldrich

Tantalum, powder, 60-100 mesh, 99.9%

Sigma-Aldrich

Tantalum, foil, thickness 0.05 mm, ≥99.9% trace metals basis

Tantalum, foil, 10m coil, thickness 0.025mm, coil width 0.75mm, annealed, 99.9%

Tantalum, foil, 50x50mm, thickness 0.5mm, annealed, 99.9%

Tantalum, foil, 2m coil, thickness 0.04mm, coil width .65mm, as rolled, 99.9%

Tantalum, foil, 8mm disks, thickness 0.0075mm, 99.9%

Tantalum, foil, 6mm disks, thickness 0.009mm, 99.9%

Tantalum, foil, 4mm disks, thickness 0.75mm, annealed, 99.9%

Tantalum, foil, 1m coil, thickness 0.1mm, coil width .62mm, as rolled, 99.9%

Tantalum, foil, 50mm disks, thickness 0.034mm, as rolled, 99.9%

Tantalum, foil, 6mm disks, thickness 0.100mm, annealed, 99.9%

Tantalum, foil, 6mm disks, thickness 0.0125mm, 99.9%

Tantalum, foil, 50mm disks, thickness 0.075mm, annealed, 99.9%

Tantalum, foil, 15mm disks, thickness 0.75mm, annealed, 99.9%

Tantalum, foil, 8mm disks, thickness 0.25mm, annealed, 99.99%

Tantalum, foil, 6mm disks, thickness 0.5mm, annealed, 99.9%

Tantalum, foil, 4mm disks, thickness 0.25mm, annealed, 99.9%

Tantalum, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.9%

Tantalum, foil, light tested, 50x50mm, thickness 0.034mm, as rolled, 99.9%

Tantalum, foil, light tested, 25x25mm, thickness 0.004mm, 99.9%

Tantalum, foil, not light tested, 100x100mm, thickness 0.01mm, 99.9%

Tantalum, foil, light tested, 25x25mm, thickness 0.003mm, 99.9%

Tantalum, tube, 100mm, outside diameter 3.5mm, inside diameter 3.1mm, wall thickness 0.2mm, as drawn, 99.9%

Tantalum, pellets, 20g, max. size 10mm, 99.9%

Tantalum, foil, not light tested, 25x25mm, thickness 0.0015mm, 99.9%

Tantalum, foil, light tested, 50x50mm, thickness 0.075mm, annealed, 99.9%

Tantalum, foil, 6mm disks, thickness 0.015mm, 99.9%

Tantalum, foil, 50mm disks, thickness 0.03mm, as rolled, 99.9%

Tantalum, foil, not light tested, 25x25mm, thickness 0.0005mm, 99.9%