Ivoclar Vivadent SR Nexco Paste - Manual (Page 13)

13
Practical Procedure
– Framework-fr
ee Restorations (Inlay/Onlay)
framework-free restorations (inlay/onlay)
modEL ISoLatIon
Sealer application
fabricate a master model or a model with detachable
segments according to the impression in the usual manner.
Expose and mark the preparation margin. Block out under-
cuts with blocking-out wax or blocking-out resin to ensure
that the restoration can be removed after the polymeriza-
tion process without damaging the die. Basically, the appli-
cation of a sealer is recommended to harden the surface
and to protect the stone die. However, the sealer layer
must not result in any changes of the dimensions of the
stone die. It is not mandatory to utilize a spacer, as two
coats of Sr model Separator will be applied. If you use a
spacer, check as to whether it is compatible with Sr model
Separator.
Sealing the dies and adjoining parts of the model
Sr model Separator is applied in two thin coats. apply the first coat generously and make sure that all areas of the die are
well covered. Watch out for sharp edges (incisal edges) in particular. then allow to react for 3 minutes. after the reaction
time, apply a second layer in a thin coat, invert the model and allow to dry for 3 minutes.
additionally, apply Sr model Separator to adjoining model surfaces that may come into contact with Sr nexco including
counterbite, allow to react for a short time, and then disperse excess material with oil-free compressed air.
Inlay (and onlay)
Fabrication of a die coated with sealer as the working basis.
Apply first coat of SR Model Separator generously, watch out for sharp edges, and allow to react for 3 minutes. Isolate model areas.