Physico-Chemical Comparison of Four Commercially Available Mineral Trioxide Aggregates

To compare the physicochemical composition of 4 MTAs commercially available in Latin America. ProRoot MTA (Dentsply, USA), Angelus (Angelus, Brazil), Flow (Ultradent, and Viarden (Viarden, Mexico) were physically chemically compared. Scanning electron microscopy (SEM) images obtained from powder prepared presentations. Energy Dispersive X-Ray Spectroscopy (EDS) analyses performed by triplicate, to calculate mass proportion calcium (Ca), silicon (Si), Ca/Si among brands. Thermogravimetric (TGA) conducted (50ºC-1000ºC), loss inflection points calculated for each material. Statistical differences Ca Si content determined ANOVA (p<0.05). SEM showed evident appearance both cubic prisms not observed other 3 similar homogeneous structures. was less homogeneous, with random structures (>15um). When comparing proportions between samples, a significantly lower elements when compared brands (p<0.005). TGA analysis behavior MTA, Flow, than 2% 1000C temperature reached. 9,94% before 700C, indicating presence different sensible degradation. The analyzed demonstrated vary their chemical physical characteristics. Clinicians must be aware same material, future research should focus on clinical implications these differences.