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The effect of seating pressure and powder/liquid ratio of zinc phosphate cement on the retention of crowns
Author(s) -
KARIPIDIS A.,
PEARSON G. J.
Publication year - 1988
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.1365-2842.1988.tb00165.x
Subject(s) - zinc phosphate , cement , zinc , crown (dentistry) , materials science , phosphate , composite material , dental cement , displacement (psychology) , dentistry , metallurgy , chemistry , adhesive , medicine , psychology , organic chemistry , psychotherapist , layer (electronics)
Summary The effect of three different powder/liquid ratios of one zinc phosphate cement on the early retention of a standard crown on metal and tooth dies was investigated. Two different seating pressures were evaluated. The results indicate that the effect of variation in the powder/liquid was not significant. The part played by the seating force was significant, the higher seating force resulting in a greater force being required for displacement after 1h. Greater forces of removal were required when tooth dies were used.