Assessment of pH Value and Release of Calcium Ions in Calcium Silicate Cements: An In Vitro Comparative Study

Author:

Herrera-Trinidad Rubén1ORCID,Molinero-Mourelle Pedro12ORCID,Fonseca Manrique2,Weber Adrian Roman2,Vera Vicente3,Mena María Luz4,Vera-González Vicente1

Affiliation:

1. Department of Conservative Dentistry and Orofacial Prosthodontics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain

2. Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, 3007 Bern, Switzerland

3. Department of Prosthodontics and Operative Dentistry, School of Dental Medicine, Tufts University, Boston, MA 02111, USA

4. Department of Analytics Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, 28040 Madrid, Spain

Abstract

The goal of this study was to evaluate the pH and the release of calcium from four calcium-silicate-based cements. Methods: Four materials were tested (ProClinic MTA; Angelus MTA; ProRoot MTA; Biodentine). The palatal canal root of acrylic upper molars was filled with each cement. Afterwards, they were set in phosphate-buffered saline. Measurements were taken by atomic adsorption spectroscopy (AAS) at 3, 24, 72, 168, 336, 672, and 1008 h. The pH was measured at the same timepoints. Kruskal–Wallis tests were carried out in each period, as the Kolmogorov–Smirnov and Shapiro–Wilk tests showed no parametric results. Results: Significant differences (p < 0.05) in calcium release were found at the 3-, 24-, and 72-hour evaluations. All of the analyzed groups presented a release of calcium ions up to 168 h, and the general tendency was to increase up to 672 h, with a maximum release of 25.45 mg/g in the ProRoot group. We could only observe significant differences (p < 0.05) in pH value over 168 h between the Biodentine (7.93) and Angelus MTA (7.31) groups. Conclusions: There were significant differences (p < 0.05) in calcium release. Nevertheless, no significant differences (p > 0.05) in the pH values were found at the studied timepoints, except for the values at 168 h.

Publisher

MDPI AG

Subject

General Materials Science

Reference46 articles.

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3. Sealing ability of a mineral trioxide aggregate when used as a root end filling material;Torabinejad;J. Endod.,1993

4. Torabinejad, M., and White, D.J. (1995). Tooth Filling Material and Method. (5769638), U.S. Patent.

5. Mineral trioxide aggregate: A new material for endodontics;Schwartz;J. Am. Dent. Assoc.,1999

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