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Postdebridement retention of endodontic reagents: a quantitative measurement with radioactive isotope
T Zurbriggen1, C E del Rio, J M Brady
1Department of Endodontics, Fort Benning, Ga., USA.
Abstract:
Forty freshly extracted human teeth were biomechanically prepared for endodontic obturation using a radioisotopically labeled EDTA-urea peroxide-Carbowax compound. The amount of radiolabeled mixture remaining in the canals after through cleansing was about 3.8% of that originally applied. The amount of residue did not decrease with reinstrumentation and irrigation.
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