J Korean Acad Prosthodont.  2000 Apr;38(2):160-168.

BOND STRENGTH BETWEEN COBALT-CHROMIUM ALLOY AND DENTURE BASE RESIN ACCORDING TO ADHESIVE PRIMERS

• Park JI
• Kwon JH
• Lee HH
• Cho HW

Abstract

This study evaluated the effects of four adhesive metal primers on the shear bond strength of a heat curing denture base resin(Lucitone 199) to cobalt-chromium alloy(Biosil-f). The adhesive metal primers were Cesead Opaque Primer, Metal Primer, MR Bond, and Super-Bond liquid. The metal surface primed or nonprimed was filled with the heat-curing methyl methacrylate resin. The specimens were stored in water at 37 degrees C for 24 hours and the alternately immersed in water bath at 5 C and 55 C for up to 2,000 thermal cycles. Shear bond strengths were measured using UTM at a crosshead speed of 0.5mm/min. Failure surface were examined under magnifying glasses. All the primers examined improved the shear bond strength between denture base resin and cobalt chromium alloy compared with nonprimed specimens before thermal cycling. The bond strength of Cesead Opaque Primer was greatest. And after 2,000 thermal cycles, the bond strengths between resin and cobalt-chromium alloy were decreased but the difference between thermal cycling 0 and 2,000 at Cesead Opaque primer and Metal Primer were not significant. This study indicated that Cesead Opaque Primer & Metal Primer is effective primers to obtain higher bond strength between heat cured denture base resin and cobalt-chromium alloy.

MeSH Terms

Adhesives*
Alloys*
Baths
Chromium
Cobalt
Denture Bases*
Dentures*
Eyeglasses
Glass
Hot Temperature
Water
Adhesives
Alloys
Chromium
Cobalt
Water