When the hexagonal positioning part of the head part fits into the hexagonal inside of the implant, there is a small click and the abutment becomes stable. After that, the fixing screw is screwed in and tightened with the torque ratchet through the abutment. The torque recommended for tightening of the abutment should be 25 Ncm and 30 Ncm for ball heads. Abutments are made of unalloyed titanium. The neck part of the abutments is smooth polished to ensure the development of the peri-implant permucosal seal. The low neck part encloses a threaded inner hole for fixing the screw that retains the prosthesis.