Barcha BDA, Cataño MLC, Simancas PMÁ

Language: Spanish
References: 26
Page: 11-16
PDF size: 229.20 Kb.

ABSTRACT

Background: Mineral trioxide aggregate remains the material of choice for repairing furcal perforations and ensure the continued root development of immature teeth. Its effect on biomechanical behavior is optimized when mixed with distilled water. Nevertheless, various studies have looked at the possibility of combining it with other mixing agents, such as chlorhexidine and even hypochlorite solution. Objective: To compare the compressive strength (CS) of mineral trioxide aggregate (MTA) combined with distilled water, 2% lidocaine plus 1:80,000 epinephrine, and 2% chlorhexidine. Material and methods: In vitro experimental laboratory study. We prepared 30 discs of gray MTA (G-MTA) mixed with the three substances (n = 10). Each disc was 4 mm in diameter and 6 mm high, wrapped in a moist gauze, and then left to set for 72 hours at 37 ^oC and 100% humidity. The compressive strength of each sample was subsequently measured using a universal testing machine (Shimadzu Scientific Instruments, INC., Columbia, NY, USA). The samples were then compressed at a rate of 1 mm/min and the CS was recorded in megapascals (MPa). Statistical analysis was performed by one-way analysis of variance (ANOVA) using Stata V.13.1 for Windows. Results: The distilled water group showed the highest CS values (8.32 ± 3.62 MPa), followed by the 2% lidocaine plus 1:80,000 epinephrine group (6.60 ± 3.42 MPa), and finally the 2% chlorhexidine group (5.15 ± 2.25 MPa). Nevertheless, these differences were not statistically significant (p = 0.09). Conclusions: Based on the results obtained in this study, we can conclude that G-MTA mixed with distilled water continues to provide superior physical properties, which suggests it is the best option for endodontic procedures. However, given the lack of statistically significant differences, there are other materials that could potentially be regarded as acceptable mixing agents.

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