The effect of hydroxyapatite coating on bone growth into porous titanium alloy implants.

Titanium-alloy Dental Implants in the Dog The Effect of Partial Coating with Hydroxyapatite on Bone Remodeling in Relation to Porous-coated

[Development and evaluation of a new surface treatment method for titanium alloy implants].

We developed and evaluated a new method of titanium surface treatment for direct bone fixation of implants. This method consists of hydroxyapatite (HA) flame coating onto a porous titanium surface which is arc-sprayed with pure titanium material in argon gas at atmospheric pressure. The surface roughness of the porous layer was 360 μm, Rmax, and showed higher resistance to blast erosion in comp...

Hydroxyapatite coating on carbon composite hip implants in dogs.

In 33 dogs we implanted femoral stems made either of carbon composite, some coated with hydroxyapatite, or of titanium alloy with a porous coating. Osseointegration was greater in the hydroxyapatite-coated than in the un-coated stems (p less than 0.001). Push-out tests, at an average of 7.2 months after implantation, showed a six-fold increase in interface shear strength and a twelve-fold incre...

Effect of local TGF-β1 and IGF-1 release on implant fixation: comparison with hydroxyapatite coating

BACKGROUND AND PURPOSE Hydroxyapatite (HA) coating stimulates the osseointegration of cementless orthopedic implants. Recently, locally released osteogenic growth factors have also been shown experimentally to stimulate osseointegration so that bone fills gaps around orthopedic implants. Here, we have compared the effect of local release of TGF-beta1 and IGF-1 with that of hydroxyapatite coatin...

Coating of titanium with hydroxyapatite leads to decreased bone formation

OBJECTIVES An experimental rabbit model was used to test the null hypothesis, that there is no difference in new bone formation around uncoated titanium discs compared with coated titanium discs when implanted into the muscles of rabbits. METHODS A total of three titanium discs with different surface and coating (1, porous coating; 2, porous coating + Bonemaster (Biomet); and 3, porous coatin...