Dental implant

The invention discloses a dental implant, which comprises a cylindrical dental implant body part, a first tail end and a second tail end, wherein the dental implant body part is encircled by unsymmetrical screw, a top-end lock is positioned at the first tail end of the dental implant body part; a lock for inserting into a proper position of nasal sinuses and maximizing internal contact design is located at the second tail end of the dental implant body part, and then is tightly connected with supporter teeth by a bolt; the top-end lock positioned at the first tail end of the dental implant body part is provided with a concave space to allow bones of the nasal sinuses to grow into the top end lock from the opening (i.e. the concave space), and provides a locking mechanism for tightly integrating the dental implant and the bones; and the lock for maximizing the internal contact design is provided with a lock hole at the second tail end of the dental implant body part to contain the rootpart of the supporter tee