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Effect of four vehicles on the pH of calcium hydroxide and the release of calcium ion.

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Department of Conservative Dentistry and Endodontics, College of Dental Surgery, Manipal Academy of Higher Education, Karnataka, India.


Nonsetting calcium hydroxide pastes are commonly used in endodontic practice. The desired therapeutic effect of such a paste is in part dependent on the dissociation of calcium hydroxide into hydroxy ion and calcium ion. This in turn is influenced by the vehicle used to make the paste. This investigation attempts to quantitatively estimate the release of hydroxyl ion and calcium ion from pastes made by using distilled water, normal saline solution, camphorated monochlorophenol and also an experimental vehicle, propylene glycol. The results of this study indicate that propylene glycol induces the most favorable release characteristics of the two ionic species.

[Indexed for MEDLINE]

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