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Calcium hydroxide root canal sealers: evaluation of pH, calcium ion concentration and conductivity
Author(s) -
SILVA L. A. BEZERRA,
LEONARDO M. R.,
SILVA R. S.,
ASSED S.,
GUIMARÃES L. F. L.
Publication year - 1997
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1046/j.1365-2591.1997.00079.x
Subject(s) - calcium hydroxide , root canal , distilled water , calcium , materials science , dentistry , nuclear chemistry , chemistry , metallurgy , chromatography , medicine
Summary The calcium hydroxide ionization of four root canal sealers (Sealapex, CRCS, Sealer 26, and Apexit) was studied by measuring conductivity and pH and by conducting atomic absorption spectroptiotometry. Samples 6 mm in diameter and 15 mm long were prepared from these sealers. After setting and 48 h storage in a desiccator, five samples of each material were placed in 50 ml distilled water and analysed after 0,1,2,4, 6 and 24 h and 5, 15 and 30 days. The results showed that Sealapex was the root canal sealer showing the highest pH, ionic calcium and total calcium values (P<0.05) throughout the experimental period, followed by CRCS, Apexit and Sealer 26