Prior to bonding, make sure the screws fall through the hole of the zirconia restoration. If there is a problem you will need to manually enlarge the hole.
Sandblast the exterior of the Ti inserts (DO NOT SAND BLAST THE INTERFACING PART OF THE ABUTMENT) and the receiving area of the zirconia with aluminum oxide.
Screw the abutments to the model.
Blackout top of screw with some white wax.
Apply the primer to the brush and apply a liberal coat to the insert and Zi receiving area. Allow to day for a minute and then fully dry with air.
Syringe a couple of beads of the resin cement circumferentially around the titanium insert.
Light cure the screw access hole, buccal and lingual for 3 seconds, each location.