## 3 Results  
The results are detailed in Table 2, and photos of the two example patients of the study before and after intraoral treatment can be found in Figures 4-7. After AMCOP\({}^{\circledR}\) elastodontic therapy, the following were noticed:  
* Vertical skeletal outcomes: a significant increase in PFH/AFH (3.13, \(p\) = 0.0004), a reduction in Sna-Snp'Go-Gn (\(-2.51^{\circ}\), \(p\) = 0.0146) and S-N'Go-Gn (\(-2.87^{\circ}\), \(p\) = 0.0014);
* Sagittal skeletal outcomes: a significant mandibular advancement, SNB (\(2.17^{\circ}\), \(p\) = 0.0015) and a reduction in the ANB angle (\(-2.28^{\circ}\), \(p\) = 0.0001). On the contrary, no significant variation in the maxillary position, SNA, was noticed (\(-0.04^{\circ}\), \(p\) = 0.9484); \begin{table}
\begin{tabular}{l} \hline \hline Sagittal plane analysis: \\
**SNA** (angle comprised between Sella–Nasion and Nasion point A segments) \\
**SNB** (angle comprised between Sella–Nasion and Nasion point B segments) \\
**ANB** (angle comprised between Nasion point A and Nasion point B segments) \\ Vertical plane analysis: \\
**Sna-Snp’Go-Gn** (intermaximillary angle, angle comprised between the bispinal plane and the mandibular plane) \\
**SF-N’Go-Gn** (mandibular angle, angle comprised between the Sella–Nasion segment and the mandibular plane) \\
**PFH/AFH** (posterior facial height and anterior facial height ratio) \\ Growth predictors: \\
**N-S-Ar** (saddle angle comprised between Nasion-Sella and Sella-Articular segments) \\
**S-Ar-Go** (articular angle comprised between Sella–Articular and Articular–Gonion segments) \\
**Ar-Go-Me** (spatial angle comprised between Articular–Gonion and Gonion–Menton segments) \\
**Ar-Go-N** (upper gonal angle comprised between Articular–Gonion and Gonion–Nasion segments) \\
**N-Go-Me** (lower gonal angle comprised between Nasion–Gonion and Gonion–Menton) \\ Dental analysis: \\
**Is:NA** (maximillary incisor distance) \\
**Ii:NB** (mandibular incisor distance) \\
**OV** (overjet) \\
**OVB** (overbite) \\
**Isli**: interincisal angle (angle between the major axis of the upper and lower incisors). \\ Upper airway space analysis: \\
**SPAS**: superior posterior airway space (distance between the soft palate and the posterior wall of the nasopharynx measured along a line parallel to Gonion–Menton (Go–Me) plane) \\
**MAS**: medium airway space (distance between the lower tip of the soft palate and the posterior wall of the oropharynx measured on a line parallel to Go–Me plane) \\
**IAS** Inferior Airway Space (distance between the lingual base along the mandibular Go–Me plane and the posterior wall of the pharynx) \\ Mandible measurements \\
**Ar-Go** (ramus height measured on Articular-Gonion segment) \\
**Go-Me** (corpus length measured on Gonion-Menton) \\ \hline \hline \end{tabular}
\end{table} 
Table 1: All the parameters considered for this study were extracted from the cephalometric analysis. * Growth pattern outcomes: a significant reduction in the gonal angle, Ar-Go-Me (\(-3.13^{\circ}\), \(p\) = 0.0185), while there were no significant differences in the seller (N-S-Ar \(-1.56^{\circ}\), \(p\) = 0.1141) and articular angles (S-Ar-Go \(1.34^{\circ}\), \(p\) = 0.4442);
* Dental outcomes: an OVJ reduction (\(-2.64\) mm \(p\) = 0.0002) without significant changes in the incisors inclination and position: Is'li (1.62 \(p\) = 0.4836); Is:NA (0.58 mm, \(p\) = 0.2822); and Ii:NB (0.92 mm, \(p\) = 0.0524);
* Airways outcomes: significant changes were found in the width of the upper airways, SPAS (2.21 mm, \(p\) = 0.0099), while the improvement in the middle and lower pharyngeal space was not significant, i.e., MAS (1.41 mm \(p\) = 0.0786) and IAS (1.64 mm \(p\) = 0.1342). Figure 4: **(A–K)**—A 10-year-old male patient (V.M.) with an augmented overjet and a deep bite. A cephalometric analysis showed skeletal class II (ANB 5.9\({}^{\circ}\)) and severe hyperdivergency (S-N°Go-Gn 41\({}^{\circ}\)).