Inclusion Criteria:  Patients ≥ 18 years of age; Mandibular AND/OR maxillary edentulous patients, treated with satisfying conventional denture for a minimum of 3 months; Bone volume compatible with the placement of implants of at least 9 mm in length; Sufficient inter-arch space; Free and informed consent; Affiliated to the social security fund.  Exclusion Criteria:  Systemic pathologies contraindicating the placement of implants (unbalanced diabetes, biphosphonates); Smoking patient > 10 cigarettes per day; Class IV bone according to the Leckholm and Zarb classification.