Examinando por Materia "Espigos prefabricados de fibra de vidrio"

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(Universidad Privada Norbert Wiener, 2012) Altamirano Canales, Dayvi Ramiro; Del Castillo Ayquipa, Armando
The objective of this research was to evaluate in vitro the degree of microleakage in the cementation of prefabricated fiberglass posts using two types of adhesive cementing agents (dual-cure resin cement and flowable resin). The sample consisted of 32 single-rooted teeth (lower premolars) recently extracted. All teeth underwent root canal treatments and were then randomly distributed into two groups: in 16 teeth, translucent fiberglass prefabricated posts were installed using dual-cure resin cement, and in the remaining 16 teeth, the same posts were cemented using flowable light-cured resin. The sample was coated with nail varnish on the entire length of the root and then immersed in 5% methylene blue for 7 days to allow passive filtration. The teeth were sectioned by wear to observe the microleakage of the dye, which was recorded through high-precision digital photographs. Microleakage was then measured using Adobe® Illustrator® CS5.5 with the “Transform” tool. The data were analyzed using the independent samples t-test, which showed a statistically significant difference between the study groups (p < 0.05). The study concluded that the degree of microleakage in the cementation of prefabricated fiberglass posts is lower with flowable resin compared to dual-cure resin cement.