Dental implant and preparation method thereof

The invention relates to the technical field of medical instruments, and discloses a dental implant and a preparation method thereof.The dental implant comprises a dental implant base body and an antibacterial nanotube structure layer, and the antibacterial nanotube structure layer is deposited on the surface of the dental implant base body; and the antibacterial nanotube structure layer is prepared from the following components: tetracycline, nano-hydroxyapatite and polylactic acid. The antibacterial nanotube structure layer of the dental implant disclosed by the invention is beneficial to the climbing proliferation and differentiation of preosteoblasts, the bone induction capability is enhanced, and the initial stability of osseointegration and operation is facilitated; and meanwhile, the tetracycline serving as a component in the antibacterial nanotube structure layer has an antibacterial effect, so that the risk of bacterial infection in the initial stage of an operation can be avoided, and the success ra