D R PRİTHVİRAJ, NİNAD MULEY, VİKAS GUPTA
International Dental Research - 2012;2(2):37-42
A study of the implant-abutment connection is of great importance because it is the primary determinant of the strength and stability of an implant-supported restoration, which, in turn, determines the restorations prosthetic stability. Traditionally, Brånemarks external hexagon has been used, but significant complications, such as abutment screw loosening, rotational misfit at the implant-abutment interface, and microbial penetration have led to modification of the external hexagon and the development of internal implant-abutment connections. In this review, we describe various implant-abutment connections that have evolved over time from the traditional external hexagon.
