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Effect of ageing on the bond strength of a permanent denture soft lining material
Author(s) -
AlAthel M.,
Jagger R.,
Jagger D.
Publication year - 2002
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2002.00946.x
Subject(s) - ageing , bond strength , dentistry , materials science , composite material , medicine , adhesive , layer (electronics)
summary Molloplast‐B is a widely used, long‐term, heat‐cured silicone denture soft lining material. Adhesion failure of this material to poly (methyl methacrylate) denture base material is a problem that is encountered clinically. The purpose of this study was to investigate the effects of long‐term immersion in water at 37 ± 1 °C and of accelerated ageing in water at 50 ± 1 °C on the tensile and shear bond strength values of this denture resilient lining material bonded to a heat‐cured denture base material. Immersion in water for 1 week at 37 ± 1 °C had no significant effect on the measured bond strength values. Longer immersion of specimens in water at 37 ± 1 °C led to a significant reduction in the measured tensile and shear bond strengths. The present study has demonstrated that the reduction in Molloplast‐B bond strength that occurs as a result of long‐term ageing in water at 37 ± 1 °C can be achieved in a shorter period of time by ageing the specimens in water at a higher temperature.