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QUARTER 3 | 2014 | CERECDOCTORS.COM | 15
Fig. 4: Strategically placed copy line
including only the cusp tips essentially
fixing the cusps into position for the
design phase. Note the “C” shape of
the copy line
Fig. 5: Crown proposal from the
“C” shaped copy. Note the accurate
cusp position and biogeneric occlusal
anatomy
Fig. 6: Lingual view of the “C” shape copy
Fig. 7: Biogeneric individual proposal.
Cusps are in a decent position.
Occlusal anatomy is definitive but
does not match existing dentition
Fig. 8: Biocopy overlaying biogeneric
individual proposal. Look at how
short the cusp heights are relative
to the pre-operative tooth.
4
6
5 7
8
because we can copy only the cusp
position(s) which will help fix the cusps
where we would like them to be. This
is also a win for patients, as copying the
cusp position will minimize their intra-
oral adjustment to the new restoration.
In the second case, tooth #3 has good
cusp position, but terrible occlusal
anatomy (Figs. 1-3). By copying only the
cusp position, the design process becomes
very easy. You’ll notice thatwhenyoucopy
the cusps, the outline appears to have a “c”
shape. Practicing in Ohio during baseball
season, and depending on whether you’re
a Cincinnati Reds fan or a Cleveland
Indians fan, you could say that the copy
line looks like the Reds or the Indians logo
(Fig. 4). (Thismight alsowork for Chicago
Cubs fans as well.)
The proposal — once the case is
designed copying only the cusp — is
perfect. The cusps are exactly where
they need to be, and the occlusal anatomy
matches adjacent occlusal anatomy (Figs.
5-6). The power of Biogeneric Copy and
Biogeneric Individual complement one
another beautifully. This case is ready to
mill after about 30 seconds of design.
Now, for arguments sake, what if this
case was not copied and was designed
using Biogeneric Individual (Fig. 7)?
Not a bad-looking proposal from an
occlusal view. Again, using the features
in the design software, we can compare
what the Biogeneric Individual proposal
looks like compared to the preoperative
tooth (Fig. 8). This clearly shows that the
functional cusp height is deficient with
the Biogeneric Individual proposal. The
grey overlay is the original cusp height
of the pre-operative tooth.
So, what does all of thismean? Itmeans
that we have two very effective ways to
design our restorations. Some may argue
that they don’t want to take the extra
steps to copy images for each case. With
Omnicam, the acquisition data can easily
be copied between folders. The tooth to
be prepped can then be cut out from the
catalog and then imaged once the prepa-
ration is completed. So, essentially there
is no added time for taking images.
Time is money in all of our practices.
Why not try this proven method for
creating predictable, ideal restorations
with little to no design needed? Try it.
You’ll never look back!
For questions and more information,
Dr. Jump can be reached at
bjumpdds34@gmail.com.