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Effect of different concentrations of propylene glycol on the physical-chemical properties of MTA

Authors

Aim: This study evaluated the effect of different concentrations of propylene glycol (PG) on the dimensional change (DC), compressive strength (CS), solubility and pH of MTA.

Methodology: Groups were formed according to the proportion of distilled water (DW) and PG in MTA manipulation: G1 (100% DW); G2 (80% DW+20% PG); G3 (50% DW+50% PG); G4 (20% DW+80% PG). The tests were guided by ISO and BSI standards. DC and CS tests were performed after 24 h and 30 days of samples storage in water. In the solubility test, rings filled with the cements were weighed after setting and after 7 days. The pH was measured after 3 and 24 h, and 30 days. The data were analyzed with the ANOVA, Tukey’s and Paired t tests (a=5%).

Results: After 24 h and 30 days, the DC and CS were similar among groups, except the CS for G3 in 30 days. After 7 days, G1 gained weight when hydrated, differing from G3 and G4 (p<0.05). When weighed dehydrated, G2 was different from the other groups (p<0.05). After 3 h, G1 had lower pH values in comparison with G2, G3 and G4 (p<0.05). At the 24-h period, G2 had higher pH values than G1 and G2 (p<0.05). After 7 days, there was no difference among groups.

Conclusions: PG did not affect the MTA dimensional change and compressive strength (except for G3). However, PG reduced MTA solubility (G2) and increased its pH after 3 hours.

Supporting Agencies

Coordination for the Improvement of Higher Education Personnel (CAPES).

How to Cite

Peressoni Vieira Schuldt, D. ., da Fonseca Roberti Garcia, L., da Silveira Teixeira, C., Dulcinéia Mendes Souza, B., Menezes Savaris, J., & Antunes Bortoluzzi, E. (2021). Effect of different concentrations of propylene glycol on the physical-chemical properties of MTA. Giornale Italiano Di Endodonzia, 35(1). https://doi.org/10.32067/GIE.2021.35.01.10