## 3 Results
The treatment plan included the use of AMCOP® Open in order to correct the skeletal open bite, followed by the AMCOP® SC device to solve the skeletal class II malocclusion. Intraoral photos of the patient: pre-treatment (**A–C)**; the intermediate phase (**D–F**); post-treatment (**G–I**). Patient wearing AMCOP® Open (**J**) and AMCOP® SC (**K**). Figure 5: **(A,B)**—Patient (V.M.) latero-lateral teleradiography X-ray: before treatment T0 (**A**); and after treatment T1 (**B**). \begin{table}
\begin{tabular}{l c c c} \hline \hline  & **T1–T0** & **T-Value** & \(p\)**-Value** \\ \cline{2-4}  & **Mean Differences** & & \\ \hline SNA & \(-\)0.04 & \(-\)0.0657 & 0.9484 \\ SNB & 2.17 & 3.7935 & 0.0015 * \\ ANB & \(-\)2.28 & \(-\)4.8857 & 0.0001 * \\ Sna–Snp’Go–Gn & \(-\)2.51 & \(-\)2.7185 & 0.0146 * \\ S–N’Go–Gn & \(-\)2.87 & \(-\)3.8090 & 0.0014 * \\ PFH/AFH & 3.09 & 4.4464 & 0.0004 * \\ N–S–Ar & \(-\)1.56 & \(-\)1.6658 & 0.1141 \\ S–Ar-Go & 1.34 & 0.7833 & 0.4442 \\ Ar-Go-Me & \(-\)3.13 & \(-\)2.6041 & 0.0185 * \\ N–Go–Me & \(-\)0.71 & \(-\)1.2368 & 0.2330 \\ Ar-Go–N & \(-\)1.64 & \(-\)1.7560 & 0.0971 \\ Ar-Go & 3.24 & 2.5629 & 0.0202 * \\ Go–Me & 2.91 & 1.6680 & 0.1136 \\ Is:NA & 0.58 & 1.1106 & 0.2822 \\ Ii:NB & 0.92 & 2.0856 & 0.0524 \\ OVJ & \(-\)2.64 & \(-\)4.7315 & 0.0002 * \\ OVB & 2.12 & 1.5256 & 0.1245 \\ INTERNICSAL & 1.62 & 0.7162 & 0.4836 \\ ANGLE & & & \\ SPAS & 2.21 & 2.9040 & 0.0099 * \\ MAS & 1.41 & 1.8718 & 0.0786 \\ IAS & 1.64 & 1.5728 & 0.1342 \\ \hline \hline \end{tabular}
* Statistically significant. \(p\)-Value < 0.05. SNA (Sella–Nasion–Point A angle); SNB (Sella–Nasion–Point B angle); ANB (Point A–Nasion–Point B angle); Sna–Snp’Go–Gn (intermaxillary angle, bispinal plane–mandibular plane angle); S–N’Go–Gn (mandibular angle, Sella Nasion–mandibular plane angle); PFH/AFH (posterior facial height and anterior facial height ratio); N–S–Ar (saddle angle, Nasion–Sella–Articular angle); S–Ar-Go (articular angle, Sella-Articular–Gónion angle); Ar–Go–Me (gonal angle, Articular–Gónion–Menton angle); N–Go–Me (lower spatial angle, Nasion–Gónón–Menton angle); Ar–Go-N (upper spatial angle, Articular–Gónion–Nasion angle); Ar–Go (ramus height, Articular–Gónion segment); Go–Me (corpus length, Gónón–Menton segment); Is/NA (maximally incisor inclination); Ii/NB (mandibular incisor inclination); OVJ (overjet); OVB (overbite); SPAS Superior posterior airway space; MAS Medium airway space; IAS Inferior airway space.  
\end{table} 
Table 2: Cephalometric measurements statistics. Figure 6: **(A–K)**–A 10-year-old female patient (D.L.) with atypical swallowing, a contraction of the upper arch, an augmented overjet, pronunciation of the upper incisors and a class II malocclusion. A cephalometric analysis revealed a skeletal class II (ANB 9.3\({}^{\circ}\)) and mild hyperdivergency (S–N’Go–Gn 35.5\({}^{\circ}\)). The first phase of treatment with AMCOP® Integral for 8 months allowed to expand the upper arch, reduce the hyperdivergency, improve the dentoskeletal class and correct the overjet. Subsequently, AMCOP® SC induced the complete correction of the sagittal problem. Intraoral photos of the patient: pre-treatment **(A–C)**; the intermediate phase (**D–F**); and post-treatment (**G–I)**. Patient wearing AMCOP® Integral **(J)** and AMCOP® SC **(K)**.