The Frictional Morse Cone is a connection system commonly used by mechanical engineering when it is necessary to join two bodies stably without the need for a screw.

It works by means of the mechanical principle that juxtaposes a cone within another small angle conical cavity. Thus, the metal interface undergoes a micromechanical entrainment called “cold welding”.

• Screw dispense: no component / prosthesis loosening occurs;
• Greater biological sealing: protection against bacterial infiltration;
• More aesthetic: favors the emergence profile;
• Gingival health: better accommodation of peri-implant tissues;
• Absence of micromovements: elimination of bad odor;
• Provides greater security in the installation and removal (if necessary) of the prosthetic component.

In pure Morse Cone type systems, the pressure exerted to lock the implant into the intermediate generates sufficient frictional resistance for a secure connection. Failure to use the screw eliminates the potential loosening problem and favors long-term system performance, unlike HE and HI platform implants.

Another very important issue for the longevity of the frictional system is the resistance to infiltration and bacterial colonization at the abutment / implant interface. Microbial accumulation around dental implants can lead to a condition of peri-implantitis which, if not properly treated, may compromise implant stability, culminating in implant loss. Considering this information, according to several published studies1,4,5, the sealing promoted by the Morse Cone fitting proves to be hermetic regarding bacterial infiltration.