Ordóñez Aguilera, Juan FernandoAlvarado Ordóñez, María GabrielaPalacios Astudillo, Iván AndrésLafebre Carrasco, Milton Fabricio2021-03-112021-03-1120162027-7822http://dspace.ucuenca.edu.ec/handle/123456789/35819https://revistas.unal.edu.co/index.php/actaodontocol/article/view/58855/pdfEl objetivo de este estudio fue comparar el grado de microfiltración en adhesivos de quinta generación Adper Single Bond (3M ESPE) y séptima generación Gc G-Bond (Gc Corp) por medio de infiltración de colorantes y observación microscópica. Metodología:Se seleccionaron 30 piezas dentales sanas correspondientes a premolares y terceros molares. Las piezas dentarias fueron limpiadas y almacenadas en agua destilada. Se realizaron las preparaciones de una cavidad clase V en la superficie vestibular y lingual de cada diente. Se empleó el adhesivo Adper Single Bond (3M ESPE, quinta generación) en la cavidad vestibular y Gc G-Bond (Gc Corp, séptima generación) en la cavidad lingual, todas las piezas dentarias fueron restauradas con resina compuesta Valux Plus A3 (3M ESPE). La muestra fue sometida a penetración de colorante, azul de metileno al 2%, por 24 horas y se efectuó un corte en sentido mesiodistal y analizadas con microscopia óptica. Se empleó la prueba estadística t-student para muestras independientes y el análisis de las diferencias en los niveles de microfiltración marginal, con un nivel de significancia estadística del 95%(p<= 0.05). Los resultados se analizaron mediante el software SPSS. Resultados: Al analizar la resultados se observa que existe una diferencia significativa (P= 0,033) entre los sistemas adhesivos de quinta y séptima generación. Presentando los adhesivos de séptima generación (Gc G-Bond - Gc Corp) valores menores de microfiltración. Conclusión: De los resultados obtenidos se puede concluir que adhesivos de quita generación (Adper Single Bond - 3M ESPE), como los de séptima generación (Gc G-Bond - Gc Corp) presentan microfiltración al colorante. Presenta una microfiltración significativa menor el adhesivo Gc G-Bond.PALABRAS CLAVES:Microfiltración, Resina compuesta, Adhesivo, Autograbante, Colorante.ABSTRACTThe aim of this study was to compare the microleakage of total-etch adhesive Adper Single Bond (3M ESPE) and self-etch adhesives Gc G- Bond (Gc Corp) by dye penetration. Thirty premolar and third molar teeth were selected for this in vitro study and class V cavities were prepared on the lingual and buccal surface. Adhesive Adper Single Bond (3M ESPE) in buccal cavity and Gc G- Bond (Gc Corp) in lingual cavity was applied and all of them were restored with a light cure resin composite, Valux Plus A3 (3M ESPE). The samples were exposed to dye penetration with methylene blue 2% for 24 hours and then microleakage was evaluated under optic microscope. To analyze microleakeage was used a qualitative method with a 0 to 3 scale. Data were analyzed by unpaired t-test. There was significant difference in dye penetration (P = 0.033) between the two adhesive systems; with lower values presented by self-etch adhesives. Within the limiting factors of this in vitro study, it was concluded that the use of this adhesive system might increase marginal seal against fifth generation systems.KEY WORDS S:Microleakage, Resin composite, Dental Adhesive, Self- etch, One- step adhesives, Dye.The aim of this study was to compare the microleakage of total-etch adhesive Adper Single Bond (3M ESPE) and self-etch adhesives Gc G- Bond (Gc Corp) by dye penetration. Thirty premolar and third molar teeth were selected for this in vitro study and class V cavities were prepared on the lingual and buccal surface. Adhesive Adper Single Bond (3M ESPE) in buccal cavity and Gc G- Bond (Gc Corp) in lingual cavity was applied and all of them were restored with a light cure resin composite, Valux Plus A3 (3M ESPE). The samples were exposed to dye penetration with methylene blue 2% for 24 hours and then microleakage was evaluated under optic microscope. To analyze microleakeage was used a qualitative method with a 0 to 3 scale. Data were analyzed by unpaired t-test. There was significant difference in dye penetration (P = 0.033) between the two adhesive systems; with lower values presented by self-etch adhesives. Within the limiting factors of this in vitro study, it was concluded that the use of this adhesive system might increase marginal seal against fifth generation systemses-ESResin compositeMicroleakagDental adhesiveSelf- etchOne- step adhesivesDyeARTÍCULO10.15446/aoc