When we perform a class II amalgam restoration, we know that the internal angles should be rounded. Identify which angle below is classified as a 3...

When we perform a class II amalgam restoration, we know that the internal angles should be rounded. Identify which angle below is classified as a 3 GROUP dihedral angle.


a) Cavo-surface angle.
b) Axio-pulpal angle.
c) Disto-vestibular angle.
d) Axio-lingual angle.
e) Vestibulo-pulpal angle.