The present invention relates to a dental implant, including: a fixture having a shaft hole in an upper portion thereof and implanted into a jawbone； and an abutment having a lower coupling shaft part and an upper mounting part, the lower coupling shaft part being inserted into the shaft hole of the fixture and being elastically coupled to the fixture, and the upper mounting part allowing a prosthesis to be mounted thereto, wherein the lower coupling shaft part of the abutment includes: a shock-absorbing part having at least two coupling legs with a cutout portion formed between the coupling legs； a coupling part formed on the outer surface of the shock-absorbing part； and a deformation control part projecting inwardly from the coupling legs and defining a width (d1) that is less than a width (d2) of the cutout portion inside the coupling part, thereby preventing the coupling shaft part from being excessively bent when an external force is applied to the coupling shaft part. According to the present invention, after implantation, the deformation control part prevents the coupling shaft from being excessively bent when an external force is applied to the coupling shaft part so that the deformation control part can significantly increase a clamping force of the coupling shaft within the shaft hole of the fixture, resulting in stable fixing of the coupling shaft. Further, the coupling shaft serves to sufficiently distribute the external force so that excessive force is not applied to the junction between the abutment and the coupling legs, thereby significantly improving the durability and lifespan of the implant.
