Impact of Cantilever Design on Clinical, Radiographic, and Volumetric Parameters: a Retrospective Study

Inclusion Criteria: * Patients aged ≥18 years; * Patients with partial edentulism; * 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 oral parafunctions (bruxism or clenching); * Presence of 1 osteointegrated dental implant in posterior region (premolar or molar) of mandible, after transmucosal placement and healing at 3-6 months; * Tissue level solid-screw implants with a sand-blasted and acid etched (SLA) surface with an endosseous diameter of 4.1 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 mm (Straumann Dental Implant System, Institute Straumann AG); Use of prefabricated titanium abutments; * Monolithic zirconia SCs manufactured by digital flow; Screwed SCs with a mesial or distal cantilever extension; * Alternative crown design (ACD) with eccentric implant insertion, with crown-like-premolar and with distal or mesial cantilever with ovoid conformation. In the latter case, the lower abutment cross-section in the region between the crown-bridge connector mimics the shape of a root, creating an "interradicular" access route to facilitate oral hygiene maneuvers; * Absence of occlusal contacts or guidance on the cantilever extension at baseline; * Opposing dentition consisting of natural teeth or fixed or removable restorations;…