Influencia del cemento endodóntico en la adhesión de postes de fibra de vidrio cementados con cemento de resina autograbante
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Fecha
2011
Autores
Profesor/a Guía
Facultad/escuela
Idioma
es
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Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
La causa más común de fracaso de la rehabilitación con
poste de fibra del diente endodónticamente tratado es la pérdida del poste,
mayoritariamente debido a la baja adhesión lograda con los cementos adhesivos por
influencia negativa de los materiales utilizados en la terapia endodóntica sobre el
sustrato dentario. Evaluar si existe diferencias significativas en los valores de tracción entre
los postes de fibras de vidrio cementados con Relyx™ Unicem® sobre piezas selladas
con cemento endodóntico de resina epóxica versus cemento de Grossman. Se seleccionaron 50 piezas dentarias humanas unirradiculares
sanas, recientemente extraídas que fueron agrupadas al azar en dos grupos (n=25), las
cuales fueron tratadas endodónticamente. El grupo 1 fue sellado endodónticamente con
cemento con contenido de eugenol (Grossman) y el grupo 2 fue sellado
endodónticamente con cemento Topseal (Dentsply). Todas las piezas fueron
desobturadas al menos 48 horas posterior a la terapia endodóntica y preparadas para
recibir un poste de fibra de vidrio (Easy Post, Dentsply) el cual fue cementado con el
cemento de resina autoadhesivo Relyx U100 (3M ESPE). Luego de al menos 48 horas
posterior a la cementación del poste de fibra, las muestras fueron sometidas a pruebas de resistencia a la tracción en la máquina de ensayo universal Tinius Olsen modelo
H5K-S. Los valores medios de resistencia a la tracción obtenidos fueron los
siguientes; grupo 1 (Grossman) 2,36 MPa; Grupo 2 (Topseal) 5,77 MPa. Los resultados
fueron sometidos al test de Kolmogorov-Smirnov presentando una distribución de
contraste normal, luego los datos fueron sometidos a la prueba T Student de muestras
independientes y se obtuvieron diferencias estadísticamente significativas entre ambos
grupos. El uso de sellador endodóntico con contenido de Eugenol (Grossman),
afecta negativamente la adhesión de postes de fibra de vidrio cementados con Relyx
U100, obteniendo valores de resistencia a la tracción significativamente menores (MPa)
que las piezas selladas con Topseal.
The most common cause of failure on the restoration of endodontically treated teeth is post loosening, mostly because of the low values of adhesion obtained with adhesive luting agents due the negative influence of sorne materials used during the endodontic therapy. Evaluate if there are significant differences in the tensile strength values between glass fiber posts luted with Relyx™ Unicem® in teeth endodontically sealed with epoxy resin root canal sealer versus those sealed with Grossman kind root canal sealer. Fifty recently extracted human uniradicular teeth were selected and randomly grouped in two groups (n=25), and were endodontically treated. Specimens from group 1 were endodontically sealed with a eugenol containing root canal sealer (Grossman) and specimens from group 2 were endodontically sealed with Topseal root canal sealer (Dentsply). After at least 48 hours of finishing the obturation all the specimens had the cement partially removed from root canals and were prepared for reciving a glass fiber post (Easy Post, Dentsply), wich was luted with the self-adhesive luting resin agent Relyx U100 (3M ESPE). After at least 48 hours of the post placement the samples were tested for tensile strength in the universal testing machine Tinius Olsen model H5K-S. The average values of tensile strength obtained were; group 1 (Grossman) 2,36 MPa; Group 2 (Topseal) 5,77 MPa. The results were submited to the KolmogorovSmirnov test presenting a normal distribuition, then the results were submited to the T Student test obtaining a statistically significative difference between group 1 and group 2. The use of a eugenol containing root canal sealer (Grossman) affects negatively the adhesion of glass fiber posts luted with Relyx U100, showing values of tensile strength significatively lower (MPa) than the values from teeth sealed with Topseal.
The most common cause of failure on the restoration of endodontically treated teeth is post loosening, mostly because of the low values of adhesion obtained with adhesive luting agents due the negative influence of sorne materials used during the endodontic therapy. Evaluate if there are significant differences in the tensile strength values between glass fiber posts luted with Relyx™ Unicem® in teeth endodontically sealed with epoxy resin root canal sealer versus those sealed with Grossman kind root canal sealer. Fifty recently extracted human uniradicular teeth were selected and randomly grouped in two groups (n=25), and were endodontically treated. Specimens from group 1 were endodontically sealed with a eugenol containing root canal sealer (Grossman) and specimens from group 2 were endodontically sealed with Topseal root canal sealer (Dentsply). After at least 48 hours of finishing the obturation all the specimens had the cement partially removed from root canals and were prepared for reciving a glass fiber post (Easy Post, Dentsply), wich was luted with the self-adhesive luting resin agent Relyx U100 (3M ESPE). After at least 48 hours of the post placement the samples were tested for tensile strength in the universal testing machine Tinius Olsen model H5K-S. The average values of tensile strength obtained were; group 1 (Grossman) 2,36 MPa; Group 2 (Topseal) 5,77 MPa. The results were submited to the KolmogorovSmirnov test presenting a normal distribuition, then the results were submited to the T Student test obtaining a statistically significative difference between group 1 and group 2. The use of a eugenol containing root canal sealer (Grossman) affects negatively the adhesion of glass fiber posts luted with Relyx U100, showing values of tensile strength significatively lower (MPa) than the values from teeth sealed with Topseal.
Notas
Tesis (Cirujano Dentista, especialización en Clínica Integral del Adulto)
Palabras clave
Adhesivos Dentales, Cemento Dental