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Neutron Activation Analysis of Microleakage Around a Hydrophobic Composite Restorative
W.H. Douglas
Department of Dental Materials, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109
C.J. Chen
Department of Dental Materials, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109
R.G. Craig
Department of Dental Materials, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109
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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Journal of Dental Research, Vol. 59, No. 9,
1507-1510 (1980)
DOI: 10.1177/00220345800590090901

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