A cross-section of the skull, manufactured with mechanical properties similar to human bone (type 2), edentula and gingiva, for incision, detachment and suturing training. It has a right and left maxillary sinus with a thickness of 1mm at the base and an almost fenestrated board, with a flexible membrane, ATM, zygomatic, auricular and occipital. Ideal for studies, teaching distance (EAD), surgical practices and hands-on can be cut and drilled. Ideal for hands-on total oral rehabilitation with standard implants and also zygomatic implants. It allows the dentist to have training, very close to the real one, training himself with respect to Bioethics. It can be fixed on the support (4020), which allows making all the necessary movements of mouth opening, tipping and closing for the student to work with both hands as in the real patient.