Resistencia adhesiva a la prueba de push-out en sistemas de monobloque de técnica directa sólo resina vs técnica poste-resina
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Fecha
2016
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es
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Universidad Andrés Bello
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Licencia CC
Licencia CC
Resumen
Este estudio se fundamentó en la necesidad de implementar una técnica de obtención de núcleo intradentario simplificada que asegure las mismas o mejores características que las técnicas ya utilizadas, se fundamenta en la necesidad de disminuir los tiempos clínicos de trabajo, el número de sesiones, la complejidad de la técnica y el presupuesto total de tratamiento, aspectos claves en la actualidad en la clínica dental. El objetivo de este estudio fue determinar la resistencia adhesiva de un núcleo mono bloque obtenido en forma directa solo con resina y un núcleo mono bloque con poste de fibra, por medio de la prueba de PUSH-OUT. Determinar la resistencia adhesiva de los núcleos en la zona cervical, media y apical en las dos técnicas de obtención.
Se llevó a cabo un estudio de campo con abordaje cuantitativo de diseño experimental con un grupo control y uno de tratamiento. La muestra estuvo constituida por 20 piezas dentarias unirradiculares, extraídas en clínicas odontológicas de la comuna de Concepción y que cumplieron con los criterios de inclusión y exclusión. Las piezas dentarias luego de ser decoronadas fueron sometidas a tratamiento de endodoncia y, posteriormente fueron divididas aleatoriamente en dos grupos; un grupo (control) en el que se realizó la técnica de núcleo en monobloque con poste de fibra para la cual se utilizaron postes WhitePost (FGM) y el cemento ParaCore® (Coltene) y el otro grupo (experimental) sin poste de fibra en la cual se utilizó el cemento Luxacore Z (DMG). Las piezas fueron cortadas en tres secciones transversales (cervical, medio y apical) de 3mm cada una. Luego se midió la resistencia adhesiva a la prueba de PUSH-OUT (prueba de empuje) a través de la máquina de ensayos universal Tinius Olsen H5K-S. Los datos obtenidos en las mediciones fueron analizados a través del software estadístico SPSS v.22. Dentro de los resultados obtenidos, destaca que el mono bloque sin poste de fibra (Grupo Experimental) mostró mayor resistencia adhesiva que el mono bloque con poste de fibra (Grupo Control) cuyas medias medidas en Mpa fueron de 11,3 (±1,9) y 7,6 (±4,2) respectivamente. En cuanto a las zonas del núcleo, se encontró que la zona apical del grupo experimental mostró una resistencia adhesiva medida en Mpa considerablemente mayor a la del grupo control con una media de 11,2 ±2,6 y de 4,7 ±0,8 respectivamente. Estas diferencias fueron estadísticamente significativas con un p<0,05.
This study is based on the need to implement a simplified intradentary nucleus obtaining technique that ensures the same or better characteristics than the techniques already used, is based on the need to reduce clinical work times, number of sessions, complexity Of the technique and the total budget of treatment, key aspects currently in the dental clinic. The objective of this study was to determine the adhesive strength of a mono block core obtained directly with resin alone and a mono block core with fiber post by the PUSH-OUT test. To determine the adhesive strength of the core in the cervical, middle and apical areas in the two techniques of production. A field study was carried out with a quantitative approach of experimental design with a control group and a treatment group. The sample consisted of 20 unirradicular dental pieces, extracted in dental clinics of the commune of Concepción and that met the criteria of inclusion and exclusion. The teeth after having extracted the crown were submitted to endodontic treatment and were later randomly divided into two groups; A group (control) in which the technique of monoblock core with fiber post for which WhitePost (FGM) posts and ParaCore® cement (Coltene), the other group (experimental) without fiber post in which Luxacore Z cement (DMG) was used. The pieces were cut in three cross sections (cervical, middle and apical) of 3mm each. The adhesive resistance to the PUSH-OUT test (push test) was then measured through the Tinius Olsen H5K-S universal testing machine. The data obtained in the measurements were analyzed using the SPSS v.22 statistical software. Among the obtained results, it is noted that the mono block with no fiber post (Experimental Group) showed greater adhesive resistance than the mono block with fiber post (Control Group) whose mean values in Mpa were 11.3 (± 1.9) And 7.6 (± 4.2) respectively. As for the core areas, the apical area of the experimental group showed an adhesive strength measured in Mpa considerably higher than the control group with a mean of 11.2 ± 2.6 and 4.7 ± 0, 8 respectively. These differences were statistically significant at p<0.05.
This study is based on the need to implement a simplified intradentary nucleus obtaining technique that ensures the same or better characteristics than the techniques already used, is based on the need to reduce clinical work times, number of sessions, complexity Of the technique and the total budget of treatment, key aspects currently in the dental clinic. The objective of this study was to determine the adhesive strength of a mono block core obtained directly with resin alone and a mono block core with fiber post by the PUSH-OUT test. To determine the adhesive strength of the core in the cervical, middle and apical areas in the two techniques of production. A field study was carried out with a quantitative approach of experimental design with a control group and a treatment group. The sample consisted of 20 unirradicular dental pieces, extracted in dental clinics of the commune of Concepción and that met the criteria of inclusion and exclusion. The teeth after having extracted the crown were submitted to endodontic treatment and were later randomly divided into two groups; A group (control) in which the technique of monoblock core with fiber post for which WhitePost (FGM) posts and ParaCore® cement (Coltene), the other group (experimental) without fiber post in which Luxacore Z cement (DMG) was used. The pieces were cut in three cross sections (cervical, middle and apical) of 3mm each. The adhesive resistance to the PUSH-OUT test (push test) was then measured through the Tinius Olsen H5K-S universal testing machine. The data obtained in the measurements were analyzed using the SPSS v.22 statistical software. Among the obtained results, it is noted that the mono block with no fiber post (Experimental Group) showed greater adhesive resistance than the mono block with fiber post (Control Group) whose mean values in Mpa were 11.3 (± 1.9) And 7.6 (± 4.2) respectively. As for the core areas, the apical area of the experimental group showed an adhesive strength measured in Mpa considerably higher than the control group with a mean of 11.2 ± 2.6 and 4.7 ± 0, 8 respectively. These differences were statistically significant at p<0.05.
Notas
Tesis (Cirujano Dentista)
Palabras clave
Adhesivos Dentales, Materiales Dentales, Eficacia