Violation

Special attention is given to matrix adaptation for the insertion of amalgam in a MO cavity in a maxillary first premolar because of the

concavity in the cervical third of the mesial surface of the crown.

restoration being in the esthetic zone

unusual position of the contact area.

buccolingual width of the tooth's mesial marginal ridge.

size of the interproximal gingival embrasure.

Please describe the matter of abuse