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Physico‐chemical properties of MTA and a novel experimental cement
Author(s) -
Santos A. D.,
Moraes J. C. S.,
Araújo E. B.,
Yukimitu K.,
Valério Filho W. V.
Publication year - 2005
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 - 10.1111/j.1365-2591.2005.00963.x
Subject(s) - cement , materials science , dental cement , composite material , dentistry , medicine , adhesive , layer (electronics)
Aim To evaluate the release of calcium ions, pH and conductivity of a new experimental dental cement (EC) and to compare them with those of mineral trioxide aggregate (MTA‐Angelus). Methodology Five samples of each cement were prepared using plastic tubes 1 mm in diameter and 10 mm long. Each sample was sealed in a test tube containing 10 mL deionized water which was analysed after 24, 48, 72, 96, 192, 240 and 360 h for pH, electrical conductivity and calcium release. The concentration of calcium ions was obtained through atomic absorption spectroscopy technique. The data were analysed statistically using the analysis of variance ( anova ) and the Student's test ( t ‐test). Results The pH of the storage solutions was not affected by the material and the interaction of material with time ( P > 0.05). However, the time of immersion was significant ( P < 0.01) for both materials. For the electric conductivity and calcium release, the interaction of material with time was statistically significant ( P < 0.01), indicating that EC and MTA‐Angelus did not behave in a similar manner. Conclusions The experimental cement released calcium and increased the pH of the storage solutions in a similar manner to MTA‐Angelus. However, EC showed significantly higher calcium release than commercial MTA‐Angelus after 24 h.