There is no such topic in dentistry than a benefits of a certain implant system over the others. So let’s try to separate the myths from the reality.
Is the taper connection of implant abutment system is completely sealed?
It’s hard to say for sure when did this myth arise, but we know that this is still currently central. This conclusion arises from the nature of Morse cone. It is known that the advantages of Morse cone widely used in many fields of science and technology. For example, Morse cone is used in the valves and the high pressure sensors. And if the cone is able not to miss the gas under high pressure it is more likely that it is able to stop microleakage of saliva. Even In periodicals several studies appeared to prove this postulate somehow.
That is indeed the case indeed. In tapered systems the microleakage is smaller than in external and internal hexagon systems.
Let’s look at a simple study
Dentists from Brazil took 10 implants with Morse cone and 10 with hexagonal interlocking and divided them into 2 groups the first were examined the inside of the implant leakage, and the second from the inside. The study shows that in both groups there were microleakages of saliva with no extra load to the implant.
As a conclusion
Today we can say with confidence that:
– All the currently available implant-abutment connection has microleakages.
– The fewer microleakages were in abutment with conical connection, then the more microleakages were in abutment with hexagonal interlocking and the “tube in tube” connection type. The major microleakages were in abutment with external hexagonal interlocking.
– The indexless connection shows the best results among the other conical systems.
So is there any advantage from the cones connection?
First advantage logically flows from the history of cone in implantology.
This conical connection was invented to reduce the amount and probability of uncoil and screw fracture. And this quality of conical connection is still useful to. A large number of studies have confirmed that due to the specific location there is minimal load on the screw line. Moreover, we can find out that the cones with the help of a deep flooding into the shaft abutment initially shifted the point of maximum stress on the bone. All the load is in the thickness of bones rather than the edge of the crest.
Today we still looking for the ideal compound for implants, but the main challenge to all dentists is to know the strengths and weaknesses of all systems and to be able to apply this knowledge in practice.