Seating zirconia-based posterior fixed partial dentures with a phosphate primer and an acrylic adhesive resin: A clinical report

Abstract

This article reports bonding technique and clinical performance of ceramic fixed partial dentures (FPDs) applied to a metal allergic patient. Frameworks of mandibular four- and three-unit FPDs were fabricated with a tetragonal zirconia polycrystal (TZP) material (Cercon) and veneered with feldspathic porcelain (Cerabien ZR). After try-in, the surface to be bonded was air-abraded with alumina (0.2 MPa), and treated with a single liquid primer (Alloy Primer) that contained a hydrophobic phosphate monomer (MDP). Abutment dentin surfaces were etched with 10% citric acid-3% ferric chloride (10-3) aqueous solution, and the FPDs were bonded with a tri-n-butylborane (TBB) initiated adhesive resin (Super-Bond C&B). After an observation period of two years, both FPDs were functioning satisfactorily. The materials and procedure reported here are applicable as an option for a prosthodontic treatment for the patients incompatible to specific metallic elements.