1. Select proper pontic – Place the abutment dies
in position in the working model. Warm the four-pontic
block – Place the pontic block into the Wet Waxer™ for
conditioning. Apply Tissue Relief Wax – Cut a piece
to match the length of the tissue section, removing the
paper and using a pencil eraser to gently press the wax
onto the pontic area.
Note: Tissue Relief Wax keeps the wax pontic in position,
while assuring the necessary clearance for porcelain tissue
contact.
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2. Cut pontic block – Remove the four-pontic block
from the Wet Waxer. If less than the full block is required,
cut off the required pontics from the section.
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3. Mold and place pontic block – While the block
is still soft and flexible (recondition if necessary),
mold the pattern with your fingers to fit the pontic area.
Patterns can be pulled to increase length or squeezed to
reduce size. Gently press pontic onto Tissue Relief Wax.
Seal pontic in place – Seal the pontic block to the
abutment patterns in the interproximal areas. Smooth abutment
collars – Smooth
the collars where they meet the dipped coping to form a smooth
arc.
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4. Separate abutments – After completing the wax-up,
cut the abutments free of the pontics using Wax Separating
Filament. Trim the margin – Using a sharp carver, trim
the excess dipping wax that extends beyond the die margin
of the abutments.
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5. Reassemble the wax pattern – After trimming the
abutment pattern margins, replace the abutment patterns in
the master working cast ready for Sprung. Place a small bead
of Former Wax over one connector only to hold the pontic
section in correct position for Sprung. Check abutment pattern
sealing – Check all abutment patterns to ensure that
the patterns are still in position on the dies and that all
margins are closed.
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6. Cover all open interproximal connections After Sprung
has cooled, cover the outside of all open interproximal connections
between abutment patterns and pontics with Former Wax. Apply
the wax to only the outside of the interproximal junction.
Do not melt the pontic or abutment waxes during this process.
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7. Remove pattern from die – Use the base of the
Ready Sprue™ as a handle and carefully remove the bridge
pattern from the model. Attach Ready Sprue to casting oval – Place
the Ready Sprue with attached pattern into the Casting Oval
Sprue Former. Flow Former Wax around the base of the Ready
Sprue to secure it to the Former.
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8. Seal interproximal connections – Flow Former
Wax over the underside of the joints between splinted abutment
patterns and between abutment patterns and pontics to seal
the connector area. This will prevent investment from duplicating
the filament line.
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