Effect of water exposure on the fracture toughness and flexure strength of a dental glass

摘要

Objectives: the low fusing dental glass (Duceram LFC) has been advertised as presenting a superior chemical resistance and augmented strength after 16 h exposure to water or 4/100 acetic acid. The purpose of this study was to evaluate the effect of prolonged exposure to water on two mechanical properties (fracture toughness and flexure strength) of LFC. Methods: Disks and bars were mirror polished and annealed prior to aging in: (1) air (control), (2) water for 24 h at 80 deg. C and (3) water for 8 Weeks at 80 deg. C.