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      Resistencia flexural de las resinas fluida convencional, fluida bulk fill y fluida de alta carga: estudio in vitro Translated title: Flexural strength of conventional flowable, bulk fill flowable and highly filled flowable resin composites: in vitro study.

      research-article
      1 , * , , 1
      Revista Científica Odontológica
      Universidad Científica del Sur
      resinas compuestas, resistencia flexural, propiedades mecánicas, composite resins, flexural strength, mechanical properties

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          RESUMEN

          Objetivo:

          Evaluar y comparar la resistencia flexural de las resinas fluida convencional, fluida bulk fill y fluida de alta carga.

          Materiales y métodos:

          Se confeccionaron treinta especímenes de 2 mm x 2 mm x 25 mm de las resinas fluidas Tetric N-Flow (TNF), Filtek Bulk Fill Flowable Restorative (FBF) y Beautifil Flow Plus F00 (BFP), las cuales se distribuyeron en tres grupos, de acuerdo con la marca (n = 10), y se almacenaron en agua destilada durante 24 horas a 37 °C. Se realizó la prueba de flexión de 3 puntos, de acuerdo con la norma ISO 4049, en una máquina de ensayo universal a una velocidad de 0,5 mm/min hasta la fractura. Los resultados se evaluaron con las pruebas de Anova y Tukey. P < 0,05.

          Resultados:

          Se encontró diferencias estadísticamente significativas entre los grupos con un valor de p = 0,011. Los grupos que mostraron diferencias estadísticamente significativas fueron los grupos BFP y TNF (p = 0,015) y los grupos BFP y FBF (p = 0,035), mientras que entre los grupos TNF y FBF no se encontró diferencia estadísticamente significativa.

          Conclusión:

          La resina fluida de alta carga presenta mejor resistencia flexural comparada con las resinas fluida convencional y fluida bulk fill, mientas que las resinas fluidas convencional y bulk fill no muestran diferencia estadísticamente significativa.

          ABSTRACT

          Objective:

          To evaluate and compare the flexural strength of conventional flowable, bulk fill flowable and highly filled flowable resins.

          Materials and methods:

          Thirty 2mm x 2mm x 25mm specimens of Tetric N-Flow (TNF), Filtek Bulk Fill Flowable Restorative (FBF) and Beautifil Flow Plus F00 (BFP) flowable resins were made up; they were distributed into three groups according to brand (n=10) and stored in distilled water for 24 hours at 37ºC. The 3-point bending test according to ISO 4049 was performed on a universal testing machine at a speed of 0.5 mm/min until fracture. The results were evaluated with Anova and Tukey tests. P<0.05.

          Results:

          Statistically significant differences were found between the groups with a value of p=0.011. According to the statistical analysis, the groups that showed statistically significant differences were the BFP and TNF groups (p=0.015) and the BFP and FBF groups (p=0.035), while no statistically significant difference was found in the TNF and FBF groups.

          Conclusion:

          The high-filled flowable resin presents better flexural strength compared to the conventional flowable and bulk fill flowable resins, while the conventional and bulk fill flowable resins have no statistically significant difference.

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          Most cited references24

          • Record: found
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          Bulk-fill resin composites: polymerization properties and extended light curing.

          The aim was to evaluate the polymerization properties of bulk-fill resin composites using two different light-curing protocols, in terms of degree of conversion (%DC), Vickers hardness (HV), polymerization volume shrinkage (PVS) and polymerization shrinkage stress (PSS) and compare them to conventional condensable and flowable resin composites.
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            • Record: found
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            • Article: not found

            Polymerization shrinkage and depth of cure of bulk-fill resin composites and highly filled flowable resin.

            The aim of this study was to evaluate the polymerization behavior and depth of cure (DOC) of recently introduced resin composites for posterior use: highly filled flowable composite and composites for bulk fill. A highly filled flowable (G-aenial Universal Flo [GUF]), two bulk-fill flowables (Surefil SDR Flow [SDR] and Venus Bulk fill [VBF]), and a bulk-fill nonflowable composite (Tetric N-Ceram Bulk fill [TBF]) were compared with two conventional composites (Tetric Flow [TF], Filtek Supreme Ultra [FS]). Linear polymerization shrinkage and polymerization shrinkage stress were each measured with custom-made devices. To evaluate DOC, the composite specimen was prepared using a mold with a hole of 4 mm depth and 4 mm internal diameter. The hole was bulk filled with each of the six composites and light cured for 20 seconds, followed by 24 hours of water storage. The surface hardness was measured on the top and the bottom using a Vickers microhardness (HV) indenter. The linear polymerization shrinkage of the composite specimens after photo-initiation decreased in the following order: TF and GUF > VBF > SDR > FS and TBF (p TF and VBF > SDR > FS and TBF (p<0.05). The mean bottom surface HV of SDR and VBF exceeded 80% of the top surface HV (HV-80%). However, the bottom of GUF and TBF failed to reach HV-80%. A highly filled flowable (GUF) revealed limitations in polymerization shrinkage and DOC. Bulk-fill flowables (SDR and VBF) were properly cured in 4-mm bulk, but they shrank more than the conventional nonflowable composite. A bulk-fill nonflowable (TBF) showed comparable shrinkage to the conventional nonflowable composite, but it was not sufficiently cured in the 4-mm bulk.
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              • Record: found
              • Abstract: found
              • Article: not found

              Characterization of Inorganic Filler Content, Mechanical Properties, and Light Transmission of Bulk-fill Resin Composites.

              The aims of this study were to characterize inorganic content (IC), light transmission (LT), biaxial flexural strength (BFS), and flexural modulus (FM) of one conventional (layered) and four bulk-fill composites at different depths.
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                Author and article information

                Contributors
                Role: Role:
                Role: Role:
                Journal
                Rev Cient Odontol (Lima)
                Rev Cient Odontol (Lima)
                odontologica
                Revista Científica Odontológica
                Universidad Científica del Sur
                2310-2594
                2523-2754
                26 September 2023
                Jul-Sep 2023
                : 11
                : 3
                : e161
                Affiliations
                [1 ] original División de Rehabilitación Oral, Carrera de Estomatología, Universidad Científica del Sur. Lima, Perú. 100069596@cientifica.edu.pe, alopezf@cientifica.edu.pe normalizedUniversidad Científica del Sur orgdiv2División de Rehabilitación Oral orgdiv1Carrera de Estomatología orgnameUniversidad Científica del Sur Lima, Peru 100069596@ 123456cientifica.edu.pe alopezf@ 123456cientifica.edu.pe
                Author notes
                * Autor corresponsal: Edith Liliana Sulca Gonzales dra.edithsulca@ 123456outlook.com

                Contribución de autoría: Los autores han contribuido en la concepción, ejecución y aprueban la versión final de este artículo.

                Conflictos de intereses: Los autores declaran que no tienen conflictos de intereses.

                Author information
                https://orcid.org/0000-0001-7538-4457
                https://orcid.org/0000-0002-1104-2439
                Article
                10.21142/2523-2754-1103-2023-161
                10809959
                38288001
                97ab6b46-fcb2-456f-a1bc-6590a69b79eb

                Este es un artículo publicado en acceso abierto bajo una licencia Creative Commons

                History
                : 02 August 2023
                : 04 September 2023
                Page count
                Figures: 2, Tables: 2, Equations: 0, References: 24, Pages: 0
                Categories
                Artículo Original

                resinas compuestas,resistencia flexural,propiedades mecánicas,composite resins,flexural strength,mechanical properties

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