The Straumann® synOcta concept was introduced worldwide in 1999, using the well-known Morse taper design principle developed in 1986. The mechanically locking friction fit of the synOcta® internal connection, with an 8° cone and an octagon for the repositioning of prosthetic parts, shows improved performance over traditional external connections. Abutment loosening, even in screw-retained situations, has virtually been eliminated.
Straumann® Standard Plus Narrow Neck implants have an external connection based on an octagon. Its design is specifically optimized for strength in small diameter implants.