Group 4:
- Cavities on premolars of type OM (OD), MOD with a lesion of one cusp;
- Cavities of molars of type OM (OD), MOD with lesions of two or more
cusps;
- Cavities on incisors with a lesion of the cutting edge more than ½ its
width;
- Cavities on fangs with a lesion of more than ½ crown width;
- horizontal tooth defeat at ½ and more crown height.