The bone growth promoting effects of statins suggest that these bioactive molecules can be used to improve the integration of bone-anchored implants. This study aimed at the application of simvastatin with dental implants for use in patients with low bone density. Coin-shaped titanium zirconium samples with grit-blasted and acid-etched surface were coated with simvastatin, using a novel anodic oxidation setup under alkaline conditions. The presence of intact simvastatin attached to the surface was confirmed by infrared spectroscopy. A binding site on the aliphatic O-H group was discovered and the integration of (1)H, (18)O and (12)C in the depth of the surface were observed by secondary ion mass spectroscopy. A simvastatin concentration of about 60 g/cm(2) was found in a release study over 72 h. The simvastatin-coated surfaces promoted alkaline phosphatase, collagen type I and osteocalcin gene expression of MC3T3-E1 cells. This suggested that the demonstrated coating holds potential for use in patients with compromised bone.
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