**11. Preparation of coronal tooth structure**

After post space is prepared then extracoronal restoration is done.

Anterior teeth requiring post and core can be best restored with metal ceramic crown Prepare the remaining crown as it was an undamaged tooth.

Sufficient reduction in the facial surface gives good easthetics.

Remove the undercuts and undermined enamel

The prepared crown must be perpendicular to the post so that it can act as a positive stop and prevent over seating of tooth.

Rotation of the post can be prevented by preparing a flat surfaces parallel to the post and when little tooth structure remains an antirotational groove should be placed in the canal.

Complete the preparation by giving smooth finish lines.
