Clinical Step-By-Step Approach for Posterior Cantilevered Single- Retainer All-Ceramic Resin-Bonded Fixed Dental Prostheses Based on Current Knowledge: A Case Report

This clinical report describes, in detail, a step-by-step protocol for the fabrication and adhesive luting of a posterior cantilevered single-retainer all-ceramic resin-bonded fixed dental prosthesis (PC-RBFDP) on the basis of current clinical knowledge and scientific data. A 32-year-old patient presented with a missing mandibular molar previously extracted due to endodontic-periodontal complications. After rejecting implant therapy, a PC-RBFDP was proposed and accepted. The restoration was designed as a partial occlusal veneer retainer in 3Y-TZP zirconia, with a feldspathic buccal veneer and a compressive pontic. Tooth preparation was limited to enamel, and the intaglio surface was sandblasted with 50 µm aluminum oxide and treated with a universal primer. Adhesive luting cementation was performed using preheated resin composite under rubber dam isolation and a strictly light-cured protocol following the 'no-finishing concept.' Clinical adjustments were completed, and postoperative occlusion was verified. The restoration exhibited proper occlusal integration and aesthetic blending. Postoperative control confirmed accurate seating and the absence of excess luting material. Maintenance was facilitated by the compressive pontic design. A three-month follow-up revealed excellent functional integration. This report outlines the first complete clinical workflow for PC-RBFDPs in posterior regions, providing clinicians with a detailed guide for implementing this minimally invasive treatment in selected cases where implant placement is not indicated.