Sellado marginal de las restauraciones indirectas del sector posterior cementadas con sistema paracore y solocem
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2020-06
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Universidad de Guayaquil. Facultad Piloto de Odontología
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Los cementos dentales juegan un papel importante en los procesos de cementación de restauraciones indirectas, deben poseer características que ayuden a contrarrestar uno de los principales problemas postoperatoria, que es la microfiltración, lo cual conlleva a un sellado marginal defectuoso; así como son las propiedades mecánicas, su estabilidad dimensional, el grado de adhesión a la estructura dentaria entre otros factores. El objetivo de esta investigación fue, realizar un estudio in vitro en 30 terceros molares, para determinar el grado de sellado marginal de las restauraciones indirectas del sector posterior cementadas con sistema Paracore y Solocem. La muestra se la dividió en tres grupos, 10 piezas dentales fueron cementadas con Paracore, 10 piezas con Solocem sin gravado previo y las 10 restantes cementadas con Solocem previo gravado. Luego de la cementación, se las sometió a un envejecimiento artificial por el transcurso de 72 horas. Posteriormente se las coloco en azul de metileno al 1%. Culminado este procedimiento, se realizaron cortes longitudinales, con el fin de observarlas en un microscopio electrónico de barrido, evidenciando la interfaz existente entre diente-restauración, midiendo los porcentajes de filtración de los tres grupos. Los resultados fueron analizados mediante el t-test de Student obteniéndose diferencias significativas. Los tres grupos de prueba no presentaron un sellado marginal óptimo, sin embargo, en el grupo que se empleó el cemento Solocem tuvo porcentajes mayores de microfiltración creando un sellado marginal más erróneo, en comparación con el grupo que utilizo el cemento Paracore en donde se pudo constatar, un mejor sellado marginal
Dental cements play a very important role in the cementation processes of indirect restorations. They must have characteristics that help to counteract one of the main postoperative problems, which is microfiltration, which leads to a defective marginal seal; as well as the mechanical properties, its dimensional stability, the degree of adhesion to the dental structure, among other factors. The objective of this research was to carry out in vitro study on 30 third molars, to determine the degree of marginal sealing of the indirect posterior sector restorations cemented with the Paracore and Solocem system. This sample was divided into three groups, 10 dental pieces were cemented with Paracore, 10 pieces with Solocem without prior etching and the remaining 10 teeth cemented with Solocem prior etched. After cementation, they were artificially aged for 72 hours. Subsequently, they were placed in 1% methylene blue. Once this procedure was completed, longitudinal cuts were made in order to observe them in a scanning electron microscope, showing the interface between the toothrestoration, measuring the filtration percentages of the three groups. The results were analyzed using the Student's t-test, obtaining significant differences. The three test groups did not present an optimal marginal seal, however, in the group that used Solocem cement, it had higher percentages of microleakage creating a more erroneous marginal seal, compared to the group that used Paracore cement where it was possible find a better marginal seal
Dental cements play a very important role in the cementation processes of indirect restorations. They must have characteristics that help to counteract one of the main postoperative problems, which is microfiltration, which leads to a defective marginal seal; as well as the mechanical properties, its dimensional stability, the degree of adhesion to the dental structure, among other factors. The objective of this research was to carry out in vitro study on 30 third molars, to determine the degree of marginal sealing of the indirect posterior sector restorations cemented with the Paracore and Solocem system. This sample was divided into three groups, 10 dental pieces were cemented with Paracore, 10 pieces with Solocem without prior etching and the remaining 10 teeth cemented with Solocem prior etched. After cementation, they were artificially aged for 72 hours. Subsequently, they were placed in 1% methylene blue. Once this procedure was completed, longitudinal cuts were made in order to observe them in a scanning electron microscope, showing the interface between the toothrestoration, measuring the filtration percentages of the three groups. The results were analyzed using the Student's t-test, obtaining significant differences. The three test groups did not present an optimal marginal seal, however, in the group that used Solocem cement, it had higher percentages of microleakage creating a more erroneous marginal seal, compared to the group that used Paracore cement where it was possible find a better marginal seal
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SELLADORES DENTALES, MICROFILTRACION, RESTAURACION DENTAL