Evaluation of metal implants coated with several types of ceramics as biomaterials

Abstract

The in vivo biocompatibility of metals coated with several different types of ceramics [alumina (alpha-Al2O3), titanium oxide (TiO2), titanium nitride (TiN), and hydroxyapatite (HAP)] was investigated. These composites had been devised for the purpose of incorporation into the stem of a total hip prosthesis. The materials were inserted into the mid-diaphyseal region of the femurs of adult dogs, and follow-up quantitative histological comparisons were performed for a period of up to 96 weeks. HAP-coated composites showed the best biocompatibility.

Electrophoretic coating of multilayered apatite composite on alumina ceramics

“…AL powders were also positively charged in the mixed solvents. As previously reported for the EPD of barium titanate powders, 23 the deposition characteristic can be attributed to the adsorption of protons that are produced as the intermediates in the keto-enol reaction. Thus, HA and AL exhibited different dependencies on the EPD process according to the composition of the solvents.…”

“…Few current works employed these mechanically excellent and bioTo overcome the shortcomings of the unparalleled bioactive compatible ceramics as substrate materials for apatite coatcalcium phosphate ceramics in mechanical properties of bendings, although both materials were studied as intensively ing strength and fracture toughness, coatings of hydroxyapaas Ti metals and stainless steels in the early stage of biomatite (HA) and tricalcium phosphate (TCP) on strong materials terials research. [21][22][23] Ceramic materials have an additional were developed as alternative methods. Plasma spraying,…”

Application of Dental Implants Coated with Titanium Nitride: The Experimental Study with Porphyromonas gingivalis Infection

“…In other studies, some regions of the TiN-coated implants showed no bone opposition at 4 weeks, but after 24 weeks, some specimens showed direct bone opposition in dog femurs (Hayashi et al, 1989). The affinity of bone for the implant index of TiN-coated stainless steel was comparable to that of alumina, but not significantly better than uncoated stainless steel (Hayashi et al, 1989). TiN-coated Ti6Al4V rods were implanted in rat femurs and showed biocompatibility and bonebonding properties similar to uncoated Ti6Al4V rods (Sovak et al, 2000).…”

Optimal conditions for alumina coating formation on the MA956 superalloy for prosthetic bearing applications

“…4 Moreover, alumina ceramic has proven to be an adequate material for femoral ball heads articulating against polyethylene acetabular cups. At the present time, wear resistance is one of the main biocompatibility factors in arthroplastic applications due to the fact that particulate debris causes bone resorption and osteolysis.…”