Please note: At least 4.3 mm. must be available
vertically for the bridge section attachment, including
screw and locking ring. The attachment and screw can not
be shortened more than this. If less space is available,
we recommend using the “Custom Bridge Sectioning
Attachment” and the “Tool Set” for custom threaded
retainers. This enables the screw to be set at the
required angle to the attachment stud.
Wax up the crown for the bridge sectioning attachment using
standard methods. Use the paralleling mandrel (Item #360 011 51) to
position the bridge section attachment on the crown, according to
the angle of insertion of the second bridge section. The underside
of the bridge sectioning attachment can be adapted to the papillae.
Caution: The plastic section can only be reduced to the threaded
sleeve, i.e. 3.3 mm.
Screw in the retention rod to hold the threaded sleeve in the
correct position in the casting ring. Before screwing the rod into
the sleeve, coat it with a thin layer of Colloidal Graphite (Item
#540 007 06). This prevents the rod burning into the investment and
enables it to be removed easily after casting. When screwing in the
retention rod, make sure that it is tightened to the stop.
The cast-on threaded sleeve of the bridge sectioning attachment
consists of a high gold content (Au, Pd, Pt) alloy (melting range:
1,350º C – 1,460º C). Therefore, the liquid of the alloy being cast
on must not exceed 1,350º C. Invest and cast using standard
procedures and according to the investment material, alloy and
casting machine manufacturers’ instructions.
After casting, devest and clean as usual. Do not remove
the retention rod until the castings have been
sandblasted. Caution: The retention rod can only be used
once as it will not function properly for a second
Trim the crown and attachment as usual. The section
connecting the attachment to the coping is rounded and
has a diameter of 1.0 mm. Therefore, the attachment can
be trimmed with an ISO size 010 cylindrical cutter if
necessary. The restoration should be polished according
to the alloy used.
Screw the locking ring into place with the titanium
screw. Grind in both components according to the bite.
The ridge around the locking ring marks the level to
which the locking ring and titanium screw can be reduced.
Neither should be reducer further as,
otherwise, the hexagonal socket in the screw will no
longer be sufficient to tighten the screw with the
screwdriver. Once the locking ring has been reduced, the
hexagonal socket must remain 0.6 mm. deep. Then coat the
screw, locking ring and bridge sectioning attachment
with fully combustible resin (e.g. Pi-Ku-Plast, Item
#540 001 7-) and wax up the outer section. Before
continuing waxing up the bridge, raise the outer section
and reposition it. Continue waxing up according to
The information contained in these instructions is
continually being updated according to the latest
knowledge and experience. Therefore, we recommend that
you read these instructions for use again before using a
new package. This product information sheet refers to
item #s 430 073 02 and 430 073 03.