The bar should be fitted between the implant abutments
with a paralleling mandrel. The bar is made of rigid
acrylic which can be trimmed easily and quickly.
After casting and trimming, the bar is secured on the
abutments with the paralleling mandrel. They should be
soldered together to create a stress free unit.
Duplicating is carried out with the yellow matrix for
the VSP-FS and with the Duplicating Jig for the VSP-GS.
This provides the optimum conditions for changing the
degree of friction later.
The restoration is blocked out and duplicated using
standard methods. No spacer wax should be applied around
the matrix.
The matrix is also duplicated and acts as a spacer for
the matrix housing in the chrome cobalt framework.
The bar and the matrix are simply coated with wax. The
remaining sections of the patterns are waxed up as
required.
Before inserting the matrix into its housing in the
chrome cobalt framework, check the housing for bubbles
and high spots.
The matrix with the desired degree of friction is
selected and pressed in using the insertion tool.
The underside of the finished restoration with parallel
bar and red matrix. The friction can be increased or
decreased as required by replacing the matrix.
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All
measurements are in millimeters.
