The purpose of this study is to evaluate the skeletal and dentoalveolar changes between subjects treated with "Distal Active Concept" therapy and class II untreated subjects. A cephalometric study includes 262 patients of ages ranging from 17 to 15 years. The processed comparisons according to gender and facial divergence show a non significant difference of maxillary measures and an important mandibular growth in the treated subjects. Males have been found to sustain more growth and effect from DAC® therapy than females. This therapy affects hypodivergent and normodivergent subjects identically.
The vertical effect of DAC® treatment has been translated in an anticlockwise mandibular growth rotation.
The increase of vertical growth factors has been identical between males and females; nevertheless, a significant difference prevails between hypodivergent and normodivergent subjects.