Violation

The preparation of an anterior tooth for a metal-ceramic crown should provide 1. adequate length for retention and resistance form. 2. space for thickness of metal that will resist deformation. 3. space for thickness of porcelain. 4. a single path of insertion.

All of the above.

(2) and (4)

(1) and (3)

(1) (2) (3)

(4) only

Please describe the matter of abuse