Bibliographic citations
Quispe, J., (2015). Influencia del grabado ácido en la resistencia a la compresión del ionómero de vidrio base convencional e híbrido [Tesis, Universidad Nacional Mayor de San Marcos]. https://hdl.handle.net/20.500.12672/4318
Quispe, J., Influencia del grabado ácido en la resistencia a la compresión del ionómero de vidrio base convencional e híbrido [Tesis]. PE: Universidad Nacional Mayor de San Marcos; 2015. https://hdl.handle.net/20.500.12672/4318
@misc{renati/479931,
title = "Influencia del grabado ácido en la resistencia a la compresión del ionómero de vidrio base convencional e híbrido",
author = "Quispe Ampuero, Johana Milagro",
publisher = "Universidad Nacional Mayor de San Marcos",
year = "2015"
}
The aim of this study was to determine the influence of acid etching on the compressive strength of convencional glass ionomer base (Ketac Bond) and hybrid glass ionomer base (Vitrebond). 40 specimens were elaborated of 5 mm in diameter by 10 mm in height and they were prepared in a plastic mold; divided into two groups according to the type of glass ionomer base and also, subdivided into two groups according to the etching. The preparation of the ionomer was performed under the manufacturer. The acid etching was performed with phosphoric acid 37%, for 15 seconds, on the upper surface of the specimen, then he proceeded to washing with distilled water for 20 seconds and then the surface wiped with paper towel. Subsequently, measures of the specimens were calibrated with a vernier and parallelism of the surfaces was found, and then be stored for 24 hours in an oven at 37⁰ C until the time of the test, which took place in the universal testing machine (Mark J. AMSLER). The results of resistance average compression for each group was: conventional glass ionomer base with acid etching was 27.22 MPa, conventional glass ionomer base without acid etching was 31.51 MPa, hybrid glass ionomer base with acid etching was 72.46 MPa and hybrid glass ionomer without acid etching was 95.54 MPa. The results were analyzed by two-way ANOVA and comparisons between groups, the Student t test was used. It was concluded that etching and glass ionomer type influence on the compressive strength. Keywords: Compressive strength, conventional glass ionomer base, hybrid glass ionomer base, acid etching.
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