Abstract: A self-tapping dental prosthetic implant has a blunt leading end, a tapered first section which has a uniform minor diameter and a uniformly increasing major diameter, a second section having uniform minor and major thread diameters, a third section with a uniform major thread diameter and a outwardly tapering minor diameter and a fourth section which has a diameter larger than any other segment and a relatively low profile (i.e., short axial length). A thread-cutting groove extends over a substantial portion of the threaded length of the implant. A stepped drill with a tip having a large included angle is used to drill a pilot hole permitting anchoring in the proximate and distal portions of cortical bone by the threaded implant.

Abstract: A dental prosthetic implant which has angular rotational capability and improved locking between the implant fixture and the abutment prosthesis. The rotation and locking system includes an implant fixture with an internal spherical radius at its upper portion. A top seat with the same spherical radius is secured to the top portion of the fixture. A locking element configured as a sphere with flexible locking fingers on its lower portion and an internal cylindrical bore through its center that has a conically tapered lower portion is received between the implant fixture and the main body of the abutment. The conically tapered lower portion may taper inwardly or outwardly and is engaged by a similarly configured portion of the flexible fingers.