TY - JOUR
T1 - Mixing with propylene glycol enhances the bond strength of mineral trioxide aggregate to dentin
AU - Salem Milani, Amin
AU - Froughreyhani, Mohammad
AU - Charchi Aghdam, Saeed
AU - Pournaghiazar, Fatemeh
AU - Asghari Jafarabadi, Mohammad
N1 - Funding Information:
The authors thank the Dental and Periodontal Research Center of Tabriz University of Medical Sciences for their technical and financial support of this project.
PY - 2013/11
Y1 - 2013/11
N2 - 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.
AB - 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.
KW - Mineral trioxide aggregate
KW - propylene glycol
KW - push-out strength
UR - https://www.scopus.com/pages/publications/84886093326
U2 - 10.1016/j.joen.2013.05.005
DO - 10.1016/j.joen.2013.05.005
M3 - Article
C2 - 24139273
AN - SCOPUS:84886093326
SN - 0099-2399
VL - 39
SP - 1452
EP - 1455
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 11
ER -