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Quantified marginal leakage of composites in vitro
Author(s) -
ARENDS J.,
VEEN H. v. d.,
GROENINGEN G. v.,
SCHUTHOF J.
Publication year - 1985
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.1365-2842.1985.tb00639.x
Subject(s) - leakage (economics) , composite material , composite number , materials science , economics , macroeconomics
Summary In this in vitro study the marginal leakage of three composite systems—Sevriton, Consize and Isocap—has been quantified as a function of time. The method used (v.d. Veen et al. , 1984) consists of the determination of the amount of nitrogen gas passing through restoration margins at 2 atm. The results show that the marginal leakage of all composites decreased strongly with time and became negligible after about 1 month. If we rank the three systems investigated according to their marginal leakage we have Consize>Isocap>Sevriton. The data suggest that water uptake and subsequent expansion of the polymers account for the leakage decrease.