Ivoclar Vivadent Vectris - Manual (Page 30)

30
V E C T R I S S I N G L E C R O W N S
Tip:
It is advisable to pour a duplicate die to carry out the vacuum-forming process, as the sharply pointed incisal edges may
cause delamination of the stone die.
Starting situation
Fabricate a master model or a model with detachable segments on the basis of the impression in the usual manner. Expose
and mark the preparation margin. It is advisable to apply a sealer to harden the surface and to protect the stone die. The
application of the sealer must not cause any changes in the dimension of the stone die. Subsequently, a spacer can be
applied, depending on the customary working method.
Working method for different preparations
The following instructions describe the procedure for a flat occlusal preparation (Version A) and a deep occlusal preparation
(Version B).
Fabricate a model with detachable segments. Mark the preparation margins...
…and apply a sealer to harden the surface. Completed working die.
Version A
Flat occlusal preparation
Version B
Deep occlusal preparation