Bonding of resin teeth to the polymethyl methacrylate denture base material
DOI:
https://doi.org/10.3109/00016359509005954Keywords:
Acrylic resins, bond strength, dentures, tooth, artificialAbstract
AbstractThe objective of this study was to compare bonding of acrylic resin teeth treated in various ways to the polymethyl methacrylate (PMMA) denture base material. The joint surface of each acrylic tooth cured to heat-cured or autopolymerizing PMMA was either untreated, ground, or adjusted with mechanical retention. The bond to the PMMA was tested with a three-point loading test. To determine whether the bond failure was adhesive or cohesive, the fracture surfaces were analyzed visually and by scanning electron microscopy. The highest bond strength to both the heat-cured and the autopolymerizing PMMA was obtained by grinding grooves on the joint surface of an acrylic resin tooth before it was cured to the PMMA (p < 0.001). Heat-cured PMMA did not adhere to the acrylic resin tooth better than the autopolymerizing PMMA did (p > 0.05).
Acta Odontologica Scandinavica publishes high quality original research papers as well as critical reviews relevant on diseases of the oral cavity, their treatment, epidemiology and associated biomaterials and their development.
