Ivoclar Vivadent IPS d.SIGN - Manual (Page 48)

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Correct use of d.SIGN
Cervical Dentin D2/D3
IP
S
If shades D2 or D3 have to be reproduced with IPS d.SIGN,
Cervical Dentin D2/D3 is used. As the following images show
(from top to bottom), the Cervical Dentin D2/D3 is directly
layered onto the opaquer. Depending on the shade being
reproduced, the dentin core is layered using either Dentin D2
or Dentin D3. After dentin build-up is complete the incisal
layer is added using D.SIGN Incisal TS3.