60 for the test group and 60 for the control group.
The test group being the tapered implant
and the control group being the parallel design implant.
Now, this study was supposed to last three years.
Now, here you have such a reopening after four months
and you see that all of a sudden
the gaps that were present in the extraction sockets
have disappeared, they are filled up.
Overall, most of the gap was filled with bone
without the need of any grafting material.
And we had significantly greater gap fill
with the cylindrical implants,
not with the conical ones.
There was a significant reduction
in the buccal crest contour of about 33%
and that was more pronounced in the anterior region
when there were thin buccal bony crests
when the patient had a history of periodontitis.
The factors for instance to consider
is the thickness of the bony plate, the buccal plate,
the horizontal position of the implants,
as I said preferably 2 mm
towards the palatal.
The vertical position of the implant,
as I said 1 mm into the socket.
Apical to the crest and finally, smoking habits.
They should be a non-smoker
and the patient should not have had
any history of periodontitis.
These are all the factors
that influence the esthetic outcome.
And in summary, you can see
that this is quite difficult to achieve.
We should choose a conservative approach,
keeping all the tissues
and since an extraction leaves an open space,
we should have this first filled with soft tissue healing.
So, we do generally only type 2 placements today
and use a very standardized protocol in our treatment.
Give the tissues time to heal.
Not everything has to be immediate, immediate, immediate
because the failure may also follow immediate.
To create the perfect illusion,
use a very strict protocol
and observe the factors that influence this healing.
Thank you very much for your attention.
