Examinando por Materia "Bioceramic materials"

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    In vitro evaluation of the mechanical resistance to compression of endodontic bioceramic cements: MTA, MTA Repair HP and Neomta2
    (Universidad Privada Norbert Wiener, 2020-08-31) Rivera Leon, Elvis Manuel; Meza de Pastor, Verónica Llerena
    Objective: To determine the mechanical resistance (R) to compressive force of endodontic bioceramic materials MTA, MTA Repair HP, and NeoMTA2. Methodology: The sample consisted of 60 specimens divided into three groups of 20 samples each, representing the bioceramic materials. Observations were made by longitudinally comparing sections to measure the compressive strength of the endodontic bioceramic materials MTA, MTA Repair HP, and NeoMTA2 in vitro at 7 and 28 days post-fabrication. Statistical distinction was conducted using ANOVA and Shapiro tests. Results: The sample analysis revealed that compressive strength (R) was higher at 28 days compared to 7 days, with the following results: MTA 18.7810 MPa / 13.8810 MPa, MTA Repair HP 39.2890 MPa / 21.8990 MPa, and NeoMTA2 23.0190 MPa / 34.1920 MPa. Significant differences (p < 0.001) were observed between MTA and MTA Repair HP, and discrepancies were noted over time (p < 0.001). Conclusion: NeoMTA2 demonstrated higher compressive strength compared to MTA and MTA Repair HP, making it a viable option as a bioceramic material.