Estudio comparativo in vitro de la microfiltración en obturaciones de composite clase II utilizando adhesivos de quinta v/s sexta generación
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2012
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es
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Universidad Andrés Bello
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Licencia CC
Licencia CC
Resumen
La tensión creada en los dientes por diferentes factores, como cambios de temperatura, cargas masticatorias y contracción de los materiales de restauración, crean espacios en los márgenes de las restauraciones. La contaminación producida a través del tiempo en esta interfase es denominada microfiltración marginal, esto puede llevar inevitablemente al fracaso de la
restauración. (4)
El objetivo de esta investigación es comparar el comportamiento in vitro de de dos sistemas adhesivos, de quinta y sexta generación, ante preparaciones biológicas clases 11, con el fin de conocer el comportamiento de ambos sistemas adhesivos frente a la microfiltración marginal.
Este estudio analítico de carácter experimental conto con una muestra de 40 premolares humanos, en los cuales se realizaron preparaciones clases 11, con medidas estándares. La mitad de la muestra se restauró con un sistema adhesivo de quinta generación, y la otra mitad con un sistema adhesivo de sexta generación. Evaluando posteriormente el grado de microfiltración marginal para ambos grupos.
De las 40 muestras analizadas el 90% no presento microfiltración marginal mayor a 1 mm. La prueba estadística del Chi cuadrado dio un Pr = 0.682, lo cual indica que no existe asociación entre el tipo de sistema adhesivo y la microfiltración marginal.
The tension created in the teeth by different factors such as temperature changes, masticatory loads, and contraction of restorative materials, create space in the margins of the restorations. The contamination produced through time at this interface is called marginal microleakage, this may inevitably lead to failure of the restoration. (4) The aim of this investigation is to compare the in vitro behavior of two adhesive systems, fifth and sixth generation, facing class II biological preparations, in order to know both adhesive systems facing the marginal microleakage. This analytical study of an experimental nature included a sample of 40 human premolars, in which classes II preparations were made, with standard measures. Half of the samples was restored with an adhesive system fifth generation, and the other half with a sixth generation adhesive system. After evaluating the degree marginal microleakage for both groups. Of 40 samples analyzed the 90% had no marginal microleakage larger than 1 mm. The statistical test chi square gave a Pr = 0.682 indicating no association between the type of adhesive system and the marginal microleakage.
The tension created in the teeth by different factors such as temperature changes, masticatory loads, and contraction of restorative materials, create space in the margins of the restorations. The contamination produced through time at this interface is called marginal microleakage, this may inevitably lead to failure of the restoration. (4) The aim of this investigation is to compare the in vitro behavior of two adhesive systems, fifth and sixth generation, facing class II biological preparations, in order to know both adhesive systems facing the marginal microleakage. This analytical study of an experimental nature included a sample of 40 human premolars, in which classes II preparations were made, with standard measures. Half of the samples was restored with an adhesive system fifth generation, and the other half with a sixth generation adhesive system. After evaluating the degree marginal microleakage for both groups. Of 40 samples analyzed the 90% had no marginal microleakage larger than 1 mm. The statistical test chi square gave a Pr = 0.682 indicating no association between the type of adhesive system and the marginal microleakage.
Notas
Tesis (Cirujano Dentista, Especialización en Clínica Integral del Adulto)
Palabras clave
Materiales Dentales, Microfiltración marginal, Resina compuesta, Sistema Adhesivo, Adhesión a tejidos dentarios