Examinando por Materia "Resin density"

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    Resistance to compression of composite resins at different densities. in vitro study. lima – peru. 2021
    (Universidad Privada Norbert Wiener, 2021-11-17) Tantaleán Mendoza, Licet Amparo; Girano Castaños, Jorge Alberto
    Objective: To determine the compressive strength of composite resins with different densities. Methodology: Two high-density resins (Filtek Z350XT – 3M Espe and Tetric N Ceram – Ivoclar Vivadent) and two low-density resins (Filtek Flow – 3M Espe and Tetric Flow – Ivoclar Vivadent) were used. These resins were molded into resin cylinders with 10 mm in height and 4 mm in diameter using a plastic mold, where increments of 2 mm were added until the required dimensions were reached. Once the resin cylinders were formed, they were taken to the mechanical testing laboratory for the compression test, where the universal testing machine applied a downward force of 1 mm/min on each resin cylinder until fracture. Data were recorded electronically by the testing equipment. Results: The results showed that the compressive strength of the high-density resins was 218.86 ± 31.18 MPa for Filtek Z350XT and 218.86 ± 31.18 MPa for Tetric N Ceram. The compressive strength of the low-density resins was 225.96 ± 23.32 MPa for Filtek Flow and 186.30 ± 17.3 MPa for Tetric Flow. Conclusion: The low-density resin Filtek Flow exhibited the highest compressive strength, followed by the high-density resins Filtek Z350XT and Tetric N Ceram, and lastly, the low-density resin Tetric Flow.