Effect of pH on compressive strength of some modification of mineral trioxide aggregate
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Effect of pH on compressive strength of some modification of mineral trioxide aggregate

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Effect of pH on compressive strength of some modification of mineral trioxide aggregate

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dc.contributor.author Saghiri, Mohammad-Ali es
dc.contributor.author Garcia-Godoy, Franklin es
dc.contributor.author Asatourian, Armen es
dc.contributor.author Lotfi, Mehrdad es
dc.contributor.author Banava, Sepideh es
dc.contributor.author Khezri-Boukani, Kaveh es
dc.date.accessioned 2014-05-29T07:11:37Z
dc.date.available 2014-05-29T07:11:37Z
dc.date.issued 2013 es
dc.identifier.uri http://hdl.handle.net/10550/35661
dc.source Saghiri, Mohammad-Ali ; Garcia-Godoy, Franklin ; Asatourian, Armen ; Lotfi, Mehrdad ; Banava, Sepideh ; Khezri-Boukani, Kaveh. Effect of pH on compressive strength of some modification of mineral trioxide aggregate. En: Medicina oral, patología oral y cirugía bucal. Ed inglesa, 2013, Vol. 18, No. 4: 714-720 es
dc.subject Odontología es
dc.subject Ciencias de la salud es
dc.title Effect of pH on compressive strength of some modification of mineral trioxide aggregate es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.description.abstractenglish Objectives: Recently, it was shown that NanoMTA improved the setting time and promoted a better hydration process which prevents washout and the dislodgment of this novel biomaterial in comparison with WTMA. This study analyzed the compressive strength of ProRoot WMTA (Dentsply), a NanoWMTA (Kamal Asgar Research Center), and Bioaggregate (Innovative Bioceramix) after its exposure to a range of environmental pH conditions during hydration. Study Design: After mixing the cements under aseptic condition and based on the manufacturers' recommendations, the cements were condensed with moderate force using plugger into 9 × 6 mm split molds. Each type of cement was then randomly divided into three groups (n=10). Specimens were exposed to environments with pH values of 4.4, 7.4, or 10.4 for 3 days. Cement pellets were compressed by using an Instron testing machine. Values were recorded and compared. Data were analyzed by using one-way analysis of variance and a post hoc Tukey's test. Results: After 3 days, the samples were solid when probed with an explorer before removing them from the molds. The greatest mean compressive strength 133.19±11.14 MPa was observed after exposure to a pH value of 10.4 for NanoWMTA. The values decreased to 111.41±8.26 MPa after exposure to a pH value of 4.4. Increasing of pH had a significant effect on the compressive strength of the groups (p<0.001). The mean compressive strength for the NanoWMTA was statistically higher than for ProRoot WMTA and Bioaggregate (p<0.001). Moreover, increasing of pH values had a significant effect on compressive strength of the experimental groups (p<0.001). Conclusion: The compressive strength of NanoWMTA was significantly higher than WMTA and Bioaggregate; the more acidic the environmental pH, the lower was the compressive strength. es

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