Which characteristic is NOT associated with a hyperdivergent mandible?

A hyperdivergent mandible is typically characterized by specific skeletal relationships and angular measurements that indicate increased growth or vertical dimension in the lower facial region. One of the hallmarks of a hyperdivergent profile is increased lower anterior facial height, which reflects greater vertical development in the anterior portion of the mandible.

Additionally, excessive dento-alveolar height is often observed in hyperdivergent individuals; this occurs due to the upward and forward placement of teeth and the resulting elongated dental arches. The steep mandibular plane angle is another defining trait, as it further indicates the vertical positioning of the mandible and its inclination relative to the cranial base.

In contrast, small ramus height is not a characteristic associated with a hyperdivergent mandible. Rather, hyperdivergence tends to correlate with a longer and taller ramus, which supports the increased vertical dimension seen in these cases. Thus, the answer correctly identifies a feature that does not align with the typical characteristics of a hyperdivergent mandible.