Patent ID: 8328556

Claim:
A dental implant comprising: a fixture defining a tapered cavity at an open end of said fixture, said fixture also defining a polygonal seat arranged at an end of said cavity diametrically opposite said open end; an angular abutment with a tapered shank and a prosthesis connection arranged on one end of said shank, said abutment also including an appendix arranged on another end of said shank diametrically opposite said prosthesis connection, said appendix having a shape complementary to a shape of said polygonal seat, said tapered cavity and said tapered shank being shaped to have said shank fit inside said cavity, a taper of said shank and of said cavity being arranged to cause said shank to lock into said cavity when said shank is fitted in said cavity, said appendix being rotatably connected to said shank; an alignment arrangement on said appendix and said shank, said alignment arrangement providing a mutual orientation of the appendix and the shank.