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In vivo sealing ability of calcium hydroxide‐containing root canal sealers
Author(s) -
Barnett Frederic,
Trope Martin,
Rooney Jane,
Tronstad Leif
Publication year - 1989
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1989.tb00332.x
Subject(s) - calcium hydroxide , root canal , apical foramen , dentistry , zinc oxide eugenol , eugenol , sodium hypochlorite , gutta percha , chemistry , stereo microscope , materials science , medicine , organic chemistry
It was the purpose of this study to determine the sealing ability of 2 commercially available calcium hydroxide‐containing root canal sealers, CRCS and Sealapex. One hundred sixty single‐rooted human teeth were used. The clinical crowns were removed and the roots were cleaned mechanically and by immersion for 24 h in 5% sodium hypochlorite. The root canals were then instrumented to size 80 at the apical foramen and the roots were sterilized by γ‐radiation. Under aseptic conditions the root canals were filled with a gutta‐percha master cone size 70 and Sealapex (48 roots), CRCS (48 roots), and a zinc oxide‐eugenol type sealer, Roth 801 (50 roots). The coronal aspects of the root canals were then sealed with zinc oxide‐eugenol cement. In order to bring the roots and root filling materials in contact with tissue and tissue fluids, the roots were implanted subcutaneously in rabbits for 90 days and 1 year. Leakage as demonstrated by penetration of India ink was evaluated using a stereomicroscope. The best results were obtained with CRCS. Significantly less leakage occurred with both calcium hydroxide‐containing sealers than with the traditional zinc oxide‐eugenol sealer.