Effects of metal primers on bonding of adhesive resin cement to noble alloys for porcelain fusing.

Autor: Okuya N; Department of Fixed Prosthetic Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan., Minami H, Kurashige H, Murahara S, Suzuki S, Tanaka T
Jazyk: angličtina
Zdroj: Dental materials journal [Dent Mater J] 2010 Mar; Vol. 29 (2), pp. 177-87.
DOI: 10.4012/dmj.2009-068
Abstrakt: This study evaluated the effects of metal primers on the bonding of adhesive resin to four pure metals (Au, Pd, Ag, Cu) and two noble alloys for porcelain fusing (high-gold and high-palladium content alloys). Bonding surface was polished with 600-grit silicon carbide paper and primed with one of the three metal primers (V-Primer, Metaltite, and M.L. Primer). Bonded specimens were fabricated by applying adhesive resin (Super-Bond C&B) on the primed surface. Shear bond strength (SBS) was determined both before and after thermocycling (4-60 degrees C for 2,000 cycles). The highest SBS values to each pure metal after thermocycling were 33.5 MPa for Au by M.L. Primer, 35.0 MPa for Ag by V-Primer, and 34.4 MPa for Cu by Metaltite. SBS to high-gold content alloy after thermocycling was 33.3 MPa by M.L. Primer. None of the primers was effective for pure Pd and high-palladium content alloy after thermocycling.
Databáze: MEDLINE