Examinando por Autor "Muñoz Rodríguez, Senith Aide"

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    Adhesive strength of fiberglass bolts using two resinous cement systems. in vitro study. Lima Peru. 2021.
    (Universidad Privada Norbert Wiener, 2022-11-12) Muñoz Rodríguez, Senith Aide; Menacho Angeles, Gregorio Lorenzo
    Objective: To compare the adhesive resistance of fiberglass posts using two resin cement systems. Methodology: 7 teeth were used for each cement type (Relyx U200 and RelyX Ultimate). A transverse cut was made at 2 mm from the cement-enamel junction on each tooth. The root canal treatment was then performed. For cementing with Relyx Ultimate, 37% phosphoric acid and Scotchbond universal adhesive were used beforehand, while for Relyx U200 cementing, the cement was applied directly. After cementing the fiberglass post, all teeth were cut into 1 mm thick discs, resulting in 6 discs. These root portion discs were taken to the DHL mechanical testing laboratory, where they underwent push-out testing to measure adhesive strength using a universal testing machine. Results: The adhesive strength of the fiberglass posts with Relyx Ultimate resin cement was 37 ± 14.59 Mpa in the cervical portion, 32.61 ± 8.44 Mpa in the middle portion, and 34.29 ± 9.13 Mpa in the apical portion. For Relyx U200 cement, the values were 34.05 ± 9.23 Mpa in the cervical portion, 38.43 ± 14.29 Mpa in the middle portion, and 30.15 ± 15.17 Mpa in the apical portion. Conclusion: No significant difference was found in the adhesive strength of fiberglass posts using the resin cement systems Relyx U200 and RelyX Ultimate in all three root thirds.