The Implant connection
strumenti chirugici per impianti dentali realizzazione soprastrutture viti impianto kit chirurgico

strumenti chirugici per impianti dentali realizzazione soprastrutture viti impianto kit chirurgico The Implant connection

The Implant connection


At present the evolution of the market allows dentists to choose among a larger range of implant systems.

Despite their large number though, the dental systems evolve around three main types that differ in their connection mode: the screwed-in, the cemented and the conometric systems. 

The most popular connection is the screwed-in connection, with an external hexagon according to the Swedish school. Since the literature mentions, most studies concern the biomechanical complications identified for this connection due to its long-standing use as well as the occurrence of a larger number of inconveniences compared to other systems: the loosening and possible breakage of the fixing screw  or even worse the breakage of the implant neck.

Based on this knowledge new types of connections are studied. During the years the antirotational mechanism of the fixture has been the object of several improvements, leaving aside the classic designs (hexagon, octagon) and developing towards pure conometrics or its combination with classic solutions.

  • The internal connection designed for the Primer SR fixture consists in a smooth joint and a central cylinder which penetrates several millimeters into the implant body; as antirotational element it consists of a four-lobed cam which gives mechanical resistance and stability against lateral loads.
  • The coupling between the implant platform and the abutment does not occur with a butt joint but with a bivelled joint. This is the best way to join two metallic surfaces together.
  • The solution of a cam-type connection reduces sharp edges in the connection. From a biomechanical viewpoint, two rounded surfaces have higher resistance against lateral loads rather than two flat surfaces that converge in an edge.
  • The cams enable the coupling of the prosthetic parts in four positions only, every 90°, offering always safe and easy connection of the prosthetic components in the correct position and reducing the working time. The coupling fixture/abutment offers a higher performance compared to traditional designs. From a clinical point of view, it is extremely important as it notably reduces the mechanical complications related to the joint.

The connection project was designed by Dr. Nicola Ciampoli, who works for the San Raffaele Hospital in Milan in an advisory capacity.          



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