An assembly comprising a carry and drive device and a dental implant, the dental implant comprising - a driving recess with a plurality of concave and convex implant driving lobes (16, 18), wherein said implant driving lobes (16, 18) are substantially parallel to a longitudinal axis of said implant, and wherein said implant driving lobes (16, 18) are straight walled lobes defined by walls substantially parallel to one another, - a pilot recess positioned below or on the distal side of the driving recess and the implant driving lobes (16, 18), and - at least one of said implant lobes having an engagement surface portion with a radial dimension defining the outermost ends of said at least one implant lobe, the carry and drive device comprising: - a driver end having a plurality of driver end driving lobes (24, 25) comprising a plurality of convex lobes and a plurality of concave lobes, corresponding to the driving lobes (16, 18) of said implant, and an exterior configuration substantially matching the interior configuration of said driving recess, - wherein the driving lobes (24, 25) are straight walled lobes which are generally parallel to one another and to a longitudinal axis of the driver end; and - at least one of said driver end driving lobes (24, 25) including an interference means (29, 28) engageable with said engagement surface portion upon insertion of said driver end into said driving recess, said interference means (29, 28) having a beveled or sloped surface which is beveled or sloped inwardly from its proximal end towards its distal end, with a radial dimension at its distal end which is less than the radial dimension of said engagement surface portion, and said interference means (29, 28) having an interference rib or portion which extends outwardly from the outermost portion of the convex lobes, with a radial dimension at its proximal end which is greater than the radial dimension of said engagement surface portion. - a driving recess with a plurality of concave and convex implant driving lobes (16, 18), wherein said implant driving lobes (16, 18) are substantially parallel to a longitudinal axis of said implant, and wherein said implant driving lobes (16, 18) are straight walled lobes defined by walls substantially parallel to one another, - a pilot recess positioned below or on the distal side of the driving recess and the implant driving lobes (16, 18), and - at least one of said implant lobes having an engagement surface portion with a radial dimension defining the outermost ends of said at least one implant lobe, - a driver end having a plurality of driver end driving lobes (24, 25) comprising a plurality of convex lobes and a plurality of concave lobes, corresponding to the driving lobes (16, 18) of said implant, and an exterior configuration substantially matching the interior configuration of said driving recess, - wherein the driving lobes (24, 25) are straight walled lobes which are generally parallel to one another and to a longitudinal axis of the driver end; and - at least one of said driver end driving lobes (24, 25) including an interference means (29, 28) engageable with said engagement surface portion upon insertion of said driver end into said driving recess,