Ivoclar Vivadent SR Nexco Paste - Manual (Page 38)

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Dentin/incisal layering
the layering procedure of the individual Sr nexco Paste materials is carried out either in accordance with the layering
diagram (shade guide layering) or individually. adapt the first layer firmly (press into place) to ensure an effective bond
between the composite and the opaquer surface and precure each segment for 20 seconds using a Quick curing light.
margin material may be applied in a half-moon shape to cervical areas, pontics and crown margins that are thinning
towards the metal. Pontic fill is particularly suitable for the pontic area. adapt firmly and create smooth, rounded
transitions between the layers (margin–dentin–mamelon–Incisal) using Sr modelling instruments or synthetic brushes.
after that, build up the dentin layers step by step and precure each segment for 20 seconds with the Quick curing light.
the shade effect in the interdental area may be enhanced by means of chromatic materials, such as occlusal dentin
orange. design the dentin core in such a way that the mamelon shape remains outlined. make sure to provide adequate
space for the subsequent application of the Incisal and transpa materials. the mamelons can be individually designed
with either mamelon material or Sr nexco Stains. after that, the restoration is completed layer by layer using Incisal and
transpa materials.
the coordinated consistency of the materials ensures that modelled contours are maintained and enables easy layering.
the Incisal materials are coordinated with the dentin materials so that delicate transitions can be designed. Subsequently,
precure each segment for 20 seconds using the Quick.
Stabilize pontic areas with Pontic Fill. Occlusal Dentin to increase the occlusal shade effect.
Intermediate curing with the Quick. Completing the dentin core.
Stains applied into the fissures and covered with Incisal material.