The present invention refers to a dental implant (1) comprising:•—a main body (2) suitable for being implanted in a primary implant seat formed in a mandibular or maxillary bone of a patient, in order to form an artificial root for an artificial tooth；•—an auxiliary plate (10) comprising one or more portions (11) laterally protruding relative to the main body (2) and foldable by deflection, so that they can be positioned at secondary bony fixing zones at a distance from the primary implant seat when the main body (2) is implanted in the primary implant seat；•—means (12) for fixing the one or more auxiliary plates (10) protruding portions (11) in corresponding one or more auxiliary implant seats formed in the secondary bony fixing zones, wherein said one or more protruding portions (11) of the auxiliary plate (10) comprise respective second through holes (13) for fixing by means of fixing screws (12) the auxiliary plate (10) in the one or more auxiliary implant seats formed in the secondary bony fixing zones, said through holes (13) and the heads of said fixing screws (12) having a frustoconical trend, such to form a conical-type, rigid, interference fitting between the fixing screws (12) and the auxiliary plate (10).
