Violation
The principal internal retention for a Class V amalgam cavity preparation is established at the
occluso-axial and gingivo-axial line angles.
mesio-axial and disto-axial line angles.
mesio-gingival and disto-gingival line angles.
The principal internal retention for a Class V amalgam cavity preparation is established at the
occluso-axial and gingivo-axial line angles.
mesio-axial and disto-axial line angles.
mesio-gingival and disto-gingival line angles.