Effects of clasp flexure on a 4-META adhered light-polymerized composite resin.
Three specimen sets of removable partial denture claps were veneered using a composite resin with 4-META onto a 50-microns aluminum oxide air-abraded surface and flexed 0.01, 0.02, and 0.03 inches for 1,500 cycles. No veneers survived intact following 0.03-inch flexures; 58% survived 0.01-inch flexures and 44% survived 0.02-inch flexures intact. There was a significant increase in the number of veneer cracks in 0.02-inch flexed clasps compared to those flexed 0.01 inch.
Snyder
H A
HA
Department of Removable Prosthodontics, College of Dentistry, University of Oklahoma, Oklahoma City 73190.
Duncanson
M G
MG
Johnson
D L
DL
Bloom
J
J
D000180:Acrylic Resins; D000704:Analysis of Variance; D003188:Composite Resins; D003738:Dental Cements; D016734:Dental Clasps; D003801:Dental Veneers; D004868:Equipment Failure; D008422:Materials Testing; D013718:Tensile Strength
D000180:Acrylic Resins; D003188:Composite Resins; D003738:Dental Cements; C031172:4-META resin