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In terms of practical use, how does the clinician who desires
an all-zirconia custom abutment ensure proper seating? For
the lab technician, seating the abutment on a model is easy.
The model can be turned or twisted as needed to achieve
optimal orientation, and there are no other anatomical
structures or tissues to get in the way. A patient in the chair,
however, is another matter. There’s only so much freedom
the clinician has in terms of orientation to gain access to the
implant site. And there are cheeks, teeth, the tongue and
soft tissue to contend with. In addition, the lab technician
is frequently more familiar with the line of draw as a result
of the intimacy gained during the design process. Without
spending the same amount of time relating the abutment to
the patient’s mouth, the doctor cannot be expected to have
this level of familiarity.
To help solve this clinical challenge and ensure proper
seating of the abutment, an acrylic jig can be made, which
serves as a positioning index and placement aid. From
Glidewell, this jig is shipped in the case box in a plastic
baggie separate from the abutment (which is seated on the
model). Upon close examination, you will see that both the
jig and the abutment are marked with the appropriate tooth
number along the facial wall (i.e., labial or buccal). Thus, if
your case includes multiple abutments, each abutment can
easily be matched to the correct jig.
Laboratory Example
Figures 3–5 illustrate an Inclusive All-Zirconia Abutment
with jig, as prepared on a laboratory model.
Figure 3: Jig designed to carry an Inclusive All-Zirconia Abutment
Figure 4: Checking access opening for Torque Wrench Driver
To … ensure proper seating
of the abutment, an
acrylic jig can be made,
which serves as a positioning
index and placement aid.
Figure 5: Abutment seated on model
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