Implant-supported Fixed Dental Prostheses (FDPs) With Cantilever Extension

Inclusion Criteria: * Patients aged ≥18 years * Written informed consent * Patients with systemic health or controlled medical conditions * Patients with healthy or treated periodontal conditions * Patients enrolled in regular supportive periodontal therapy (SPT) * Patients without clinical signs of bruxism and/or oral parafunctions * 2 osseointegrated dental implants in the canine or posterior areas of maxilla and mandible following transmucosal placement and healing of 3-6 months * Tissue level solid-screw implants with a sand-blasted and acid- etched (SLA) surface with an endosseous diameter of 3.3, 4.1 or 4.8 mm, a length of 8, 10 or 12 mm, a shoulder diameter of 4.8 mm and a supracrestal machined neck with a height of 1.8 or 2.8 mm (Straumann® Dental Implant System, Institut Straumann AG, Basel, Switzerland) * Full-ceramic * Utilization of prefabricated titanium abutments * Cemented (3M™ ESPE Ketac™ Cem, Seefeld, Germany) or screw-retained fixed dental prostheses with a mesial or distal cantilever extension (FDPCs) * Cantilever extension corresponding to 1 premolar unit (i.e., 6-7 mm) * Absence of occlusal contacts or guidance on the cantilever extension at baseline * Opposing dentition consisting of natural teeth or fixed or removable prosthetic restorations * Availability of a periapical radiograph at baseline (i.e. FDPC delivery) * Availability of PPD measurements (mm) taken at baseline at 4 sites/implant with a graduated Michigan periodontal probe (Deppeler SA, Roll…