Mixing with propylene glycol enhances the bond strength of mineral trioxide aggregate to dentin.
| Autor: | Salem Milani A; Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address: Amin.salemmilani@gmail.com., Froughreyhani M, Charchi Aghdam S, Pournaghiazar F, Asghari Jafarabadi M |
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| Jazyk: | angličtina |
| Zdroj: | Journal of endodontics [J Endod] 2013 Nov; Vol. 39 (11), pp. 1452-5. Date of Electronic Publication: 2013 Aug 31. |
| DOI: | 10.1016/j.joen.2013.05.005 |
| Abstrakt: | Introduction: Mixing mineral trioxide aggregate (MTA) with different proportions of propylene glycol (PG) improves its handling property. The aim of this study was to evaluate the effect of PG on MTA-dentin push-out bond strength. Methods: Seventy-five 2-mm-thick midroot sections were prepared from single-rooted human extracted teeth. The lumen of each slice was enlarged with Gates-Glidden burs. The slices were randomly divided into 3 groups (n = 25). In each group, 0.3 mL of the liquid was mixed with 1 g MTA (Angelus, Londrina, Brazil). The liquid vehicles used in groups 1-3 were 100% distilled water (DW), 20% PG-80% DW, and 100% PG, respectively. After incubation, the push-out strength of the samples was measured using a universal testing machine. The samples were then cut in halves and examined under a stereomicroscope to determine the failure pattern. One-way analysis of variance followed by the Tukey post hoc test was used to compare the push-out strength among groups. Results: There were statistically significant differences between groups (P < .001). The push-out strength in group 1 (DW) was significantly lower than groups 2 and 3 (P < .001 and P = .022, respectively). However, there was no significant difference between groups 2 (DW-PG) and 3 (PG). Conclusions: Mixing MTA with PG increased its push-out bond strength to dentin. In the present study, the most suitable ratio was 80% DW-20% PG. (Copyright © 2013 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.) |
| Databáze: | MEDLINE |
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