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Journal of Dental Research, Vol 59, 1507-1510, Copyright © 1980 by International & American Associations for Dental Research Online Journals

ARTICLES

Neutron activation analysis of microleakage around a hydrophobic composite restorative

W. H. Douglas, C. J. Chen and R. G. Craig

Neutron activation analysis with dysprosium as a tracer was employed to determine quantitatively the microleakage around the restorations of an experimental hydrophobic composite, as well as a commercial composite. Only a negligible uptake of tracer was obtained for the experimental composite, whereas a five-fold uptake was recorded for the commercial composite. Capillary penetration of fluid around a restoration could be greatly reduced by using a hydrophobic composite.




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