A dental implant assembly comprises an implant, a driver/abutment device, and a spacer. The device includes a bottom portion having a protrusion comprising an inferior aspect and a superior aspect. The spacer prevents the oversized, superior aspect of the device from engaging an interior cavity of the implant so that the driver is easily removable after insertion of the implant in the jaw of a patient. Removing the spacer permits the superior aspect to engage the interior cavity, thereby permanently fixing the driver to the implant.