Premium
The effect of etching on glass polyalkenoate cements
Author(s) -
AGGART S. E. T,
PEARSON G. J.
Publication year - 1991
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 - 10.1111/j.1365-2842.1991.tb00027.x
Subject(s) - etching (microfabrication) , materials science , flexural strength , composite material , mixing (physics) , acid etching , dentistry , layer (electronics) , medicine , physics , quantum mechanics
Summary The effect of acid etching on the surface appearance and flexural strength of four glass polyalkenoate cements was investigated. Specimens were etched for intervals of 10–60 s, both at the recommended time after mixing and after a 24‐h delay. The surface texture was examined microscopically. Further specimens were subjected to a 4‐point bend test following etching 1 h and 24 h after mixing. Deterioration of the surface appearance occurred as the etching time was increased beyond 10 s following immediate etching. Etching after 24 h reduced surface damage, but a 10‐s etch still gave the most favourable surface appearance without loss of particulate material. Etching beyond 10 s significantly reduces flexural strength.