The principle application of zinc phosphate cement is:
APPLICATIONS

Luting of restorations (inlays, crowns, fixed dental prostheses, etc).
High strength bases.
Temporary restorations.
Luting of orthodontic bands and brackets.

Ref: Manappalil Pg- 89
In final cementation
As temporary cementation
As a temporary filling material
It has less occlusal wear