Cementation

Conventional cementation with zinc phosphate cements
Indication:
For In-Ceram ALUMINA and ZIRCONIA crowns and bridges
Advantages:
Compared with other cements zinc phosphate cements are relatively opaque and have a higher degree of solubility.

Conventional cementation with glass ionomer cements
Indication:
· For SPINELL, ALUMINA and ZIRCONIA crowns
· For ALUMINA and ZIRCONIA bridges
· For patients showing allergic reactions to constituents of adhesive composites
· In cases where it is not possible to completely dry the area of treatment
Examples of glass ionomer adhesive cements:
· Fuji I Capsule Glass Ionomer Luting Cement (GC)
· Ketac-Cem Aplicap (Espe)

Cementation with glass ionomer-composite cements and compomer adhesive cements
· Currently, cementation is not recommended with these types of cement.
· Previous studies indicate that these adhesive materials tend to expand after a certain time in situ due to the absorption of moisture. This can lead to fractures of all-ceramic restorations (In-Ceram and feldspar ceramic). Therefore further studies are required.

Adhesive cementation
with PANAVIA 21 TC (Kuraray)
Indication:
· For all In-Ceram restorations.This chemically setting, modified Bis-GMA luting composite includes an adhesive compomer which forms a durable bond with In-Ceram. PANAVIA 21 TC (tooth color) is particularly translucent and is therefore especially suitable to produce esthetic restorations.
Clinical procedure:
· Place a rubber dam to keep the treatment area dry
· Try-in of the In-Ceram restoration
· After contamination with saliva, etc. the sandblasted restoration must be cleaned in organic solvent (e.g. chloroform, acetone, alcohol) in the ultrasonic unit
· Mix and apply PANAVIA 21 TC according to the manufacturer’s instructions
· We recommend the use of an enamel/ dentine adhesive system to ensure optimum bonding to the tooth substance.