Hiroyasu Koizumi, DDS, PhD,(a,b) Daisuke Nakayama, DDS,(a) Mamiko Kochi, DDS,(a) and Hideo Matsumura, DDS, PhD(a,b)
(a)Department of Fixed Prosthodontics, and (b)Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
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.(Int Chin J Dent 2009; 10: 47-50.)
Key Words: adhesive, ceramics, fixed partial denture, primer, zirconia