The aim of this prospective randomized clinical trial was to evaluate and compare a set of clinical items and satisfaction of a group of edentulous patients during a ten-year follow-up. They were treated according to one of the following modalities: 61 patients with a mandibular overdenture on two implants (IMP-group), 60 patients with conventional complete dentures (VP-group) and 28 patients with a complete denture after preprosthetic surgery (MVP-group). It can be concluded that enosseous implants, serving as retention for a mandibular overdenture, have a high survival rate after ten years of follow-up (93%). The mean satisfaction score of the VP-group was lower than that of the IMP-group. The mean satisfaction score of the MVP-group was lower than that of the IMP-group.