Properties of biocomposite on the “bone-tocarbon nano implant” border

Abstract

Novice carbon nanostructural material was investigated to estimate its integration to the bone tissue. Wedge osteotomy of a femur bone performed in experimental circumstance on 26 white rats (control=6, experiment=21). Wedge-shaped (h=4 mm, r=3 mm, α=12) implants were crafted from carbon nano-structural material and used to fill bone’s defect. Rats withdrove from the experiment in 3 months. Mechanical properties of the “bone-wedge-bone” block evaluated by the 3-point bending test. Field emission scanning electron microscope used to investigate biocomposite at the bone-to-implant border. The microelements distribution in the samples measured with energy dispersive X-ray analysis. Biomechanical properties of bone-to-implant biocomposite depend on clinical features of consolidation. Anyway, the toughness (T) of bone-to-implant zone is worse than bone-to-bone regenerate significantly (Tcontr = 56.97 MPa, Texp = 47.68 Mpa, Welsh p-value = 2.689e-07). No Ca, or P reveals in the body of implants. The quality and the thickness of the biocomposite on the bone-to-implant border predetermine clinical results of bone substitution. The absence of microelements inside the body of implants confirms that the implant structure is too subtle. Increasing porosity of material and creation of transverse channels can improve bone conduction and scaffold quality of carbon nano-implants.