Skeletal Class III (SCIII) malocclusion is one of the most arduous craniofacial dysmorphologies to treat in orthodontics due to the need of long lasting and difficult interventions with low predictability and uncertain outcomes at a long term. The cephalometric analysis in SCIII individuals typically reveals an abnormal sagittal relationship of the jaw with respect to the maxillary bone. In particular, this skeletal malocclusion can be characterized by a retrognathic maxilla, a prognathic mandible, or a combination of these two discrepancies. The former condition is consistent with a reduction of the SN^A angle (angle between sella, nasion and subspinale point A), whereas the latter with an increase of the SN^B angle (angle between sella, nasion and supramentale point B). Independently of the specific case, skeletal Class III patients display a reduced or even negative ANB values (angle between the maxillary and mandibular plans) and Wits appraisal.1

Several studies addressed the topic of recommended orthodontic treatments in SCIII individuals. The facemask is the common appliance for the treatment of SCIII subjects with maxillary retrusion, as it stimulates the maxillary advancement, whereas there are no functional appliances to prevent or significantly limit the mandibular development.2

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