Shear bond strength of denture teeth to base: a comparative study.
Fracture and debonding of plastic teeth from the denture base are common clinical problems. In this study, a shear, or peeling, load was applied to the tooth-denture base junction. The bond strength of a high-impact, heat-cured denture base to three commercial brands of denture teeth, Bioform, Dentacryl, and TNR, was assessed. Ninety-three percent of the specimens exhibited cohesive failure within the body of the tooth and not adhesive failure at the tooth-denture base junction. Some of the teeth exhibited brittle fracture while others underwent distortion on loading. Dentacryl displayed the highest cohesive bond strength, followed by Bioform and TNR.
Thean
H P
HP
Department of Restorative Dentistry, National University of Singapore, Faculty of Dentistry, Singapore.
Chew
C L
CL
Goh
K I
KI
D000180:Acrylic Resins; D000704:Analysis of Variance; D003432:Cross-Linking Reagents; D001840:Dental Bonding; D003819:Denture Bases; D008422:Materials Testing; D014093:Tooth, Artificial
D000180:Acrylic Resins; D003432:Cross-Linking Reagents