Efecto de la aplicación de silano en la resistencia adhesiva microtraccional entre un cemento resinoso y un material cerámico de disilicato de litio, estudio in vitro
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Archivos
Fecha
2009
Autores
Valderrama Tamburrino, Diego
Profesor/a Guía
Facultad/escuela
Idioma
es
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Introducción: La función del silano facilita la unión entre el sílice contenido en los
materiales de restauración y la matriz orgánica de los cementos resinosos. Así, se establecen
uniones covalentes siloxanas, aumentando la capacidad humectante del agente adhesivo. Las
soluciones de silano contienen una cantidad significativa de solvente que al evaporarse aumenta la condensación del silano sobre la superficie de cerámica.
Objetivo: Medir y comparar la fuerza de adhesión generada entre un cemento de resina y
la cerámica acondicionada, con protocolos distintos para la aplicación de silano
Metodología: Tres bloques cerámicos (IPS Empress CAD; lvoclar Vivadent AG) fueron
seccionados en dos mitades, acondicionados con ácido fluorhídrico <5% (IPS Ceramic Etching
Gel, lvoclar Vivadent AG) y siguiendo tres protocolos de aplicación de silano:
Gr.A) Durante 1 minuto a temperatura ambiente.
Gr.B) Durante 1 minuto en horno a 100ºC.
Gr.C) Sin aplicación de silano.
Luego cementados mediante un cemento de resina dual (Variolink 11, lvoclar Vivadent AG)
según las indicaciones del fabricante. De cada bloque se obtuvieron 23 barras de 1x1x16mm,
utilizando la máquina de corte de precisión ISOMET, las cuales se sometieron a termociclado
(5400 ciclos entre 5 y 55ºC) y luego a pruebas de microtracción (MICRO TENSILE TESTER.
BISCO).
Los resultados obtenidos fueron analizados en el software SYSTAT v.12, utilizando el
método ANOVA y Tukey (P<0,05) para comparar las muestras del Gr.A, Gr.By Gr.e .
Resultados: Los valores obtenidos (MPa) Gr.B (43,65 ± 6.02) (x ± ds) es
significativamente mayor que los valores obtenidos para Gr.A (36.87 ± 4.90) y ambos valores son
significativamente mayores que los valores del Gr.e (20.58 ± 5.21).
Conclusiones: La aplicación del agente silano aumenta significativamente la fuerza de
adhesión entre materiales cerámicos y los cementos resinosos. La aplicación de silano a 100ºC
aumenta aún más la fuerza de adhesión cuando se compara con la aplicación de silano a
temperatura ambiente.
lntroduction: The mechanism of chemical unían of the silano happens because his function facilitates the unían between the sílice contained in the materials of restoration and the organic counterfoil of the resinous cements. Of this form, unions are established covalentes siloxanes, increasing the capacity of to moisten of the adhesive agent. The solutions of silano contain a significant quantity of solvent and it must be evaporated, far increase this way the condensation of the silano on the surface of ceramics. Objective: To measure and to compare the force of adhesion generated between a cement of resin and the etching ceramics, with three different protocols of application of silano. Methodology: Three ceramic blocks (IPS Empress CAD; lvoclar Vivadent AG) they were cut in two halves, conditioned with acid fluorhídric <5 % (IPS Ceramic Etching Gel, lvoclar Vivadent AG) and three protocols different from application of silano: GrA) Application of silano in a minute to temperature environment. GrB) Application of silano in a minute to 1 00ºC. GrC) Without application of silano. Again cemented by means of resinous dual cement (Variolink 11, lvoclar Vivadent AG) according to the indications of the manufacturer, after every block there obtained 23 bars of 1 X 1 X 16mm, which surrendered to termocycling (5400 cycles between 5 and 55ºC) and submitted test of microtensile {MICRO TENSILE TESTER BISCO) Results obtained were analyzed in the software SYSTAT 12, the method ANOVA and Tukey was in use (p<0.05). Results: The obtained values (MPa) GrB (43,65 ± 6.02) if s significantly majar that the values obtained far GrA (36.87 ± 4.90) and both values are significantly majar that the values of the GrC (20.58 ± 5.21 ). Conclusions: The application of the agent silano increases significantly the force of adhesion between ceramic materials and the resinous cements. The application of silano to 1 00ºC increases moreover the force of adhesion when it is compared with the application of silano to temperature set.
lntroduction: The mechanism of chemical unían of the silano happens because his function facilitates the unían between the sílice contained in the materials of restoration and the organic counterfoil of the resinous cements. Of this form, unions are established covalentes siloxanes, increasing the capacity of to moisten of the adhesive agent. The solutions of silano contain a significant quantity of solvent and it must be evaporated, far increase this way the condensation of the silano on the surface of ceramics. Objective: To measure and to compare the force of adhesion generated between a cement of resin and the etching ceramics, with three different protocols of application of silano. Methodology: Three ceramic blocks (IPS Empress CAD; lvoclar Vivadent AG) they were cut in two halves, conditioned with acid fluorhídric <5 % (IPS Ceramic Etching Gel, lvoclar Vivadent AG) and three protocols different from application of silano: GrA) Application of silano in a minute to temperature environment. GrB) Application of silano in a minute to 1 00ºC. GrC) Without application of silano. Again cemented by means of resinous dual cement (Variolink 11, lvoclar Vivadent AG) according to the indications of the manufacturer, after every block there obtained 23 bars of 1 X 1 X 16mm, which surrendered to termocycling (5400 cycles between 5 and 55ºC) and submitted test of microtensile {MICRO TENSILE TESTER BISCO) Results obtained were analyzed in the software SYSTAT 12, the method ANOVA and Tukey was in use (p<0.05). Results: The obtained values (MPa) GrB (43,65 ± 6.02) if s significantly majar that the values obtained far GrA (36.87 ± 4.90) and both values are significantly majar that the values of the GrC (20.58 ± 5.21 ). Conclusions: The application of the agent silano increases significantly the force of adhesion between ceramic materials and the resinous cements. The application of silano to 1 00ºC increases moreover the force of adhesion when it is compared with the application of silano to temperature set.
Notas
Tesis (Cirujano Dentista, especialización Clínica Integral del Adulto)
Palabras clave
Materiales Dentales, Adhesivos Dentales