Ivoclar Vivadent SR Nexco Paste - Manual (Page 39)

39
Practical Procedure
– Fixed, Metal-Supported Restorations
fInaL PoLymErIzatIon
after the layering procedure has been completed, all layers must be precured. to make sure that this is the case, you may
precure each segment again for 20 seconds. next, apply Sr Gel on the entire veneering surface ensuring that all areas
are fully covered and the layer is not too thick.
Polymerization
bridge
Appliance Time Program
Precuring time per segment Quick 20 s –
final polymerization Lumamat 100 11 min P2
For the parameters of other polymerization devices, please go to page 57.
Remove SR Gel. Using cross-cut burs and discs, remove the inhibition layer and create a lifelike shape.
fInISHInG / PoLISHInG
Finishing
after completion of the polymerization procedure, completely remove Sr Gel from the restoration using running water
and/or a steamer. finish the restoration with cross-cut tungsten carbide burs, fine diamonds and flexible discs. It is
advisable to use low speed and light pressure. make sure to rework the entire restoration to remove the inhibition layer
of approximately 30 µm from all surfaces. fit the restoration on the model and adjust proximal and occlusal contact
points. Subsequently, recreate a lifelike tooth shape and surface structure. the inhibition layer must be removed from the
entire Sr nexco surface.
An optimum shade reproduction is achieved if the SR Nexco layer is 1 mm thick.