The implant-abutment connection plays a pivotal role to maintain the biomechanical
criteria for the success of implants. Over the years, various implant abutment
connection designs have been introduced, to reduce stress on the prosthetic component
and on the bone-implant interface to provide adequate prosthetic stability besides
simplifying the armamentarium. The mechanical complications of Branemark’s
original implant-abutment connection i.e., external connections were overcome, as
the new concept of internal connection evolved. The internal connection designs
were refined with anti-rotational features such as 12-point internal hex, internal
tripod, and internal octagon. The introduction of the most tried and true fixtures in
the engineering world the “Morse Taper”, witnessed a hermetic seal that prevents
micromovements and microgap thus preventing bacterial invasion of the abutment
implant juncture. Furthermore, this internally stable design allows for the use of a
narrower abutment platform that can be additionally combined with the concept
of platform switching.
Dr. Sreeprabha G Mohan (Reader)
Dr. Vinod Krishnan (Professor)
Department of Prosthodontics,
Amrita School of Dentistry, Kochi