Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Journal of oral rehabilitation
11 (1984), S. 0
ISSN:
1365-2842
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
A method is described to quantify marginal leakage of amalgam restorations in vitro as a function of time. The method consists of the determination of the amount of nitrogen gas passing through the margins of the restoration at 2atm. pressure in 30min.The method described needs about sixteen specimen per experiment. The standard error is 20-30% of the mean leakage value and is independent of the type of condensation and the amalgam type.Two amalgams, the non-γ2-Dispersalloy and the conventional, Amalcap was compared longitudinally over a period of 4 months. The results showed:〈list xml:id="l1" style="custom"〉1The marginal leakage of Dispersalloy decreased strongly with time; the time dependency of Amalcap was less pronounced.2That carefully condensed Amalcap showed significantly less marginal leakage than Dispersalloy.3Whereas the marginal leakage of Amalcap was dependant on the condensation procedure, the leakage of Dispersalloy did not depend strongly on it.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2842.1984.tb00563.x
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