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Adhesive cementation in this case “ a feldspathic laminate “ can work for all glass ceramics 
So let's get started. 
Initially, the field is isolated, either with a rubber dam or alternatively with retraction cords, cotton rolls and high power saliva ejector. The tooth surface is cleaned to eliminate any material debris used for fabricating the temporary restoration. The laminate is then held with a special device eg. Optrastick " Ivoclar Vivadent " to check its marginal adaptation. 


A proper restorative protocol, with successful preparation and impression, associated with a high-quality lab, is expected to generate accurate ceramic restorations. ðŸ‘ŒðŸ»
If the adaptation is unacceptable the restoration should be repeated. Resin cement should not be used to fill the space of large maladaptations. Once the adaptation is confirmed, the cementation is initiated :
1️⃣ The intaglio surface of the laminate is etched with hydrofluoric acid 9% for 60 seconds and thoroughly rinsed with water and cleaned with air/water spray then dried. 


2️⃣ Apply Silane and maintain it for a few seconds " almost 60 seconds " over the entire surface then evaporate the solvents of the silane with a gentle jet of air.
3️⃣ Apply a phosphoric acid gel 37% to the tooth surface, after proper protection of the adjacent teeth a matrix of polyester, rinsed and the excess moisture is removed. 
4️⃣ Two coats of the adhesive system are then applied to both the preparation and the silanized ceramic surface followed by the evaporation of its solvents with air jets.
⛔️ Attention ⛔️
The adhesive is not light-cured at this moment, so there is not any risk of a thin layer, already polymerized, to interfere with restoration adaptation.

5️⃣ The light-cured cement is inserted and spread all over the fitting surface of the veneer and it is placed into position and pressed digitally to extravasate any excess cement that will, in turn, be removed along the margins with probes or thin spatulas, and only then the light-curing may be carried out. 


6️⃣ The retraction cord is then removed and the remaining excesses should be removed carefully with the aid of #12 scalpel blades. 


A simple trick is to do 5 seconds curing initially " tack curing ", remove excesses then complete curing is performed.🧜🏻‍♂️
7️⃣ Finally, finishing and polishing of cementation lines may be performed proximally with abrasive strips, buccally and palatally with abrasive rubbers. 
Now the final result looks great. Check the photos ðŸ‘‡ðŸ»