• Comparación in vitro de la resistencia adhesiva en dentina utilizando tres sistemas adhesivos universales

      Casas Apayco, Leslie Caroll; Kinoshita Rivas, Haru Antony; Acurio Benavente, Claudia Mariana (Universidad Peruana de Ciencias Aplicadas (UPC), 2017-12-13)
      Objectives: Compare in vitro bond strength in dentin of three universal adhesive system: Scotchbond UniversalTM (3M ESPE), Peak Univerisal Bond (Ultradent), Tetric N-Bond (Ivoclar Vivadent) through the shear bond. Materials and methods: 75 crowns teeth were selected and cut to this study. Exposed dentin with granulation 220 sandpaper. Subsequently, the crowns were distributed randomly (n=25) and included in databases acrylic 15 x 10mm. The distribution of the groups was G1: System universal Scotchbond™ adhesive Universal (3M ESPE - USA); G2: System universal adhesive Peak Bond Universal (Ultradent); G3: Universal adhesive system Tetric N-Bond (Ivoclar Vivadent). Then, was to make the adhesive phase according to each group and the restorative procedures with composite resin Filtek™ Z350XT-A2 (3M ESPE-USA), according to the manufacturer's instructions. It was made of tygon composite resin (0.79mm x 1.5 mm). The samples were stored in an incubator at 37°C (+/-5 °C) for 24 hours. Subsequently, each group shear test was conducted (0.5 mm / min, 500N load), obtaining values in kg/m2 to convert MPa. Also assessed the type of failure, using a digital microscope of increasing x 200. Oneway ANOVA test was used for statistical analysis between the adhesive strength and universal adhesive systems. Results: No Found statistically significant differences between the systems evaluated universal adhesives Scotchbond™ Universal (14.91±4.76), Peak Bond Universal (16.90±4.11) and Tetric N-Bond (Ivoclar Vivadent) (17.34±4.04) / p-value (p = 0.114). Conclusions: No differences between the values of adhesive strength of three universal adhesive systems used in this study.
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