“…[ 18 ] It is mandatory to maintain a bare minimum anxiety level in the preoperative period, for the reason that if patients are anxious, they may be incapable to retain significant home-care instructions, experiencing an unknown environment, loss of control, results of redundant diagnoses, failure of identity, indecision about postoperative recovery. [ 19 ] Among the 500 study subjects, 40 (7.0%) were experienced regarding the procedure, whereas 466 (93%) never had previous history of orthognathic surgery. Jan Rustemeyer et al .…”