Clinical Evaluation of Implant-secured Removable Partial Denture

Inclusion Criteria: * Patients with at least a 4 to 6 adjacent teeth intermediate extended-gap (excluding wisdom teeth) in the upper or lower jaw. * Patients with at least 4 conservable teeth by dental arch, without major occlusal trouble. * Patients with healthy periodontium, allowing metalic standard removable partial denture delivery : bleeding on periodontal probing for a duration less than 30 seconds, Osteolysis of the alveolar ridge less or equal to 50%, attachment loss less or equal to 5mm * Patients with a sufficient bone volume for implant placement, without prior bone supply. Exclusion Criteria: * Patients with general counter-indications for implant placement. * Patients suffering from a titanium allergy. * Patients with an insufficient oral and dental hygiene - Patients smoking ten or more cigarettes per day. * Patients with teeth extended-gap, which could be corrected by a fixed tooth-supported denture. * Patient with an insufficient available bite level to deliver an attachment system (\< 7mm). * Patients with a severe generalized chronic periodontitis , an aggressive periodontitis or a periodontitis unresponsive to treatment. * Women who have reported to be pregnant. * Patients deprived of liberty