"ComparaciĆ³n de resistencia cohesiva de sistemas de resina bulkfill Sonic fill y Tetric N ceram bulkfill : estudio in vitro, ConcepciĆ³n 2016"
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2016
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es
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Universidad AndrƩs Bello
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Resumen
ANTECEDENTES Las fuerzas de cohesiĆ³n entre las partĆculas de una resina son fundamentales para lograr una buena estabilidad del material, ya que proveen informaciĆ³n sobre su comportamiento mecĆ”nico una vez colocadas en el diente. En la actualidad, existe poca informaciĆ³n sobre las propiedades fĆsicas de estos materiales. JUSTIFICACION Este investigaciĆ³n se fundamenta en la necesidad de conocer las propiedades fĆsicas de las resinas Tetric N Ceram bulkfill y Sonic fill, determinando el comportamiento en boca al momento de rehabilitar dientes posteriores, previniendo con ello eventuales fallas de material. OBJETIVO Determinar el valor de resistencia cohesiva de los sistemas de resinas bulkfill mediante la aplicaciĆ³n de fuerzas de cizallamiento.
METODOLOGIA Estudio de abordaje cuantitativo con diseƱo experimental, donde se compararon los valores de resistencia cohesiva entre los sistemas Tetric N ceram bulkfill (Grupo1) y Sonic fill (Grupo 2) en relaciĆ³n a un grupo control de resina Filtek P60 (Grupo 3) con un total de 48 muestras, las cuales cumplieron con criterios de inclusiĆ³n y exclusiĆ³n, validadas por juicio de experto. Las muestras fueron sometidas a fuerzas de cizallamiento en la maquina Shear Bond Tester, para producir la fractura del material, registrando cada una de las fuerzas en Mpa aplicadas. El procesamiento de los datos se realizĆ³ con el software estadĆstico SPSS v.22 con uso de tĆ©cnicas de anĆ”lisis descriptivos e inferencial, previo anĆ”lisis exploratorio mediante test KS (Kolmogorov-Smirnov) para evaluaciĆ³n de normalidad. Para comparar diferencias de medidas en la resistencia cohesiva se utilizĆ³ el test de ANOVA y Comparaciones mĆŗltiples segĆŗn los objetivos del estudio. Todos con alfa de 0.05. RESULTADOS SegĆŗn el promedio de las mediciones obtenidas de la maquina Shear bond tester se observa que el grupo de Tetric N ceram Bulkfill (Grupo 1) presenta un promedio de 0,575 Mpa y una desviaciĆ³n de 0,033 el grupo de resinas Sonic fill (Grupo 2) tiene un promedio de 0,800 Mpa y una desviaciĆ³n de 0,032 y el grupo de resinas Filtek P60 (Grupo 3) tiene un promedio de 0,699 Mpa y una desviaciĆ³n de 0,052. El grupo que presenta mayor resistencia cohesiva frente a fuerzas de cizalla es el grupo de resinas Sonic fill, seguido por el grupo de resinas Filtek P60 y por Ćŗltimo el grupo de resinas Tetric N ceram bulkfill. El anĆ”lisis de ANOVA con un p= 0.000 demuestra que si existen diferencias estadĆsticamente significativas en las fuerzas de cizalla entre los grupos, principalmente dado por los grupos Tetric N ceram bulkfill y los grupos Sonic fill y Filtek P60, grupo Sonic fill y los grupos Tetric N ceram bulkfill y Filtek P60, y el grupo Filtek P60 con los grupos Tetric N ceram bulkfill y Sonic fill.
CONCLUSIONES SegĆŗn el anĆ”lisis de los resultados obtenidos de los grupos estudiados. El grupo que presentĆ³ mayor resistencia cohesiva frente a fuerzas de cizalla es el grupo Sonic fill (grupo 2) con un promedio de 0,800 Mpa seguido por el grupo Filtek P60 (Grupo 3) y por Ćŗltimo, el grupo Tetric N ceram bulkfill (Grupo 1). Por lo tanto la resinas Sonic fill es la que podrĆa presentar mejores propiedades fĆsicas ante las fuerzas producidas en la cavidad oral.
BACKGROUND The cohesion forces between the particles of a resin are fundamental to achieve a good stability of the material, since they provide information about their mechanical behavior once placed in the tooth. At present, little information exists on the physical properties of these materials. JUSTIFICATION This research is based on the need to know the physical properties of the resins Tetric N Ceram bulkfill and Sonic fill, determining the behavior in the mouth at the time of rehabilitating posterior teeth, thus preventing eventual material failures. PURPOSE Determine the cohesive strength value of both bulkfill resin systems in test samples by applying shear forces METHODOLOGY A quantitative approach with experimental design, comparing the values of cohesive strength between the Tetric N ceram bulkfill (Group 1) and Sonic fill (Group 2) systems in relation to a Filtek P60 resin control group (Group 3) with a total Of 48 samples, which met with inclusion and exclusion criteria, validated by expert judgment. The samples were subjected to shearing forces in the Shear Bond Tester, to produce the fracture of the material, recording each of the forces in Mpa applied. Data processing was performed using SPSS v.22 statistical software using descriptive and inferential analysis techniques, after exploratory analysis using a KS (Kolmogorov-Smirnov) test for normality evaluation. To compare differences in measures of cohesive resistance, the ANOVA test and multiple comparisons were used according to the objectives of the study. All with 0.05 alpha. RESULTS According to the average of the measurements obtained from the Shear bond tester, it is observed that the group of Tetric N ceram Bulkfill (Group 1) presents an average of 0.575 Mpa and a deviation of 0.033 the group of resins Sonic fill (Group 2) has a Average of 0.800 Mpa and a deviation of 0.032 and the group of Filtek P60 resins (Group 3) has an average of 0.699 Mpa and a deviation of 0.052. The group with the highest cohesive resistance to shear forces is the group of Sonic fill resins, followed by the group of Filtek P60 resins and finally the group of resins Tetric N ceram bulkfill. The analysis of ANOVA with p = 0.000 shows that if there are statistically significant differences in shear forces between the groups, mainly given by the groups Tetric N ceram bulkfill and the groups Sonic fill and Filtek P60, Sonic fill group and groups Tetric N ceram bulkfill and Filtek P60, and the group Filtek P60 with the groups Tetric N ceram bulkfill and Sonic fill. CONCLUSIONS According to the analysis of the results obtained from the groups studied. The group that presented the highest cohesive resistance to shear forces was the Sonic fill group (group 2) with an average of 0.800 Mpa followed by the Filtek group P60 (Group 3) and finally the group Tetric N ceram bulkfill (Group 1 ). Therefore the Sonic fill resins is the one that could present better physical properties to the forces produced in the oral cavity.
BACKGROUND The cohesion forces between the particles of a resin are fundamental to achieve a good stability of the material, since they provide information about their mechanical behavior once placed in the tooth. At present, little information exists on the physical properties of these materials. JUSTIFICATION This research is based on the need to know the physical properties of the resins Tetric N Ceram bulkfill and Sonic fill, determining the behavior in the mouth at the time of rehabilitating posterior teeth, thus preventing eventual material failures. PURPOSE Determine the cohesive strength value of both bulkfill resin systems in test samples by applying shear forces METHODOLOGY A quantitative approach with experimental design, comparing the values of cohesive strength between the Tetric N ceram bulkfill (Group 1) and Sonic fill (Group 2) systems in relation to a Filtek P60 resin control group (Group 3) with a total Of 48 samples, which met with inclusion and exclusion criteria, validated by expert judgment. The samples were subjected to shearing forces in the Shear Bond Tester, to produce the fracture of the material, recording each of the forces in Mpa applied. Data processing was performed using SPSS v.22 statistical software using descriptive and inferential analysis techniques, after exploratory analysis using a KS (Kolmogorov-Smirnov) test for normality evaluation. To compare differences in measures of cohesive resistance, the ANOVA test and multiple comparisons were used according to the objectives of the study. All with 0.05 alpha. RESULTS According to the average of the measurements obtained from the Shear bond tester, it is observed that the group of Tetric N ceram Bulkfill (Group 1) presents an average of 0.575 Mpa and a deviation of 0.033 the group of resins Sonic fill (Group 2) has a Average of 0.800 Mpa and a deviation of 0.032 and the group of Filtek P60 resins (Group 3) has an average of 0.699 Mpa and a deviation of 0.052. The group with the highest cohesive resistance to shear forces is the group of Sonic fill resins, followed by the group of Filtek P60 resins and finally the group of resins Tetric N ceram bulkfill. The analysis of ANOVA with p = 0.000 shows that if there are statistically significant differences in shear forces between the groups, mainly given by the groups Tetric N ceram bulkfill and the groups Sonic fill and Filtek P60, Sonic fill group and groups Tetric N ceram bulkfill and Filtek P60, and the group Filtek P60 with the groups Tetric N ceram bulkfill and Sonic fill. CONCLUSIONS According to the analysis of the results obtained from the groups studied. The group that presented the highest cohesive resistance to shear forces was the Sonic fill group (group 2) with an average of 0.800 Mpa followed by the Filtek group P60 (Group 3) and finally the group Tetric N ceram bulkfill (Group 1 ). Therefore the Sonic fill resins is the one that could present better physical properties to the forces produced in the oral cavity.
Notas
Tesis (Cirujano Dentista)
Palabras clave
Materiales Dentales, Eficacia, RehabilitaciĆ³n, OdontologĆa, Estudio