Shear bond strength and failure types of polymethyl methacrylate denture base resin and titanium treated with surface conditioner
Lim, H.-P.; Kim, S.-S.; Yang, H.-S.; Vang, M.-S.
International Journal of Prosthodontics 23(3): 246-248
2010
ISSN/ISBN: 0893-2174 PMID: 20552091 Document Number: 647406
This study compared the shear bond strength and failure types of a polymethyl methacrylate (PMMA) denture base resin to commercially pure (CP) titanium, Ti-6Al-4V alloy, and cobalt-chromium alloy using a metal surface conditioner. The PMMA denture base resin (5 x 5 x 5 mm(3)) was cured onto disks, 10 mm in diameter and 2.5-mm thick. The shear bond strength of the PMMA resin with the surface conditioner was significantly higher than that without (P < .05). There was no significant difference between the types of metal. The conditioned specimens showed mixed failures, whereas the nonconditioned specimens exhibited only adhesive failure at the metal-resin interface.