Examinando por Materia "Protección superficial"

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Moisture absorption and resistance to acid dissolution in glass ionomer cements with and without surface protection during the first 24 hours: in vitro study
(Universidad Privada Norbert Wiener, 2023-05-20) Romero Cárdenas, Zuly Marisol; Arauzo Sinchez, Carlos Javier
Objective: To evaluate the effect of surface protection on moisture absorption and acid dissolution resistance in glass ionomers during the first 24 hours. Methodology: An experimental (in vitro), longitudinal, and comparative study was conducted with 40 glass ionomer disk samples (10mm x 2mm). Two groups were formed: G1 (control) without surface protection and G2 (experimental group) with surface protection (solid petroleum jelly). To evaluate moisture absorption, the samples were immersed in water, and to assess acid dissolution, they were submerged in 3% citric acid. The weight of the samples was recorded at 0, 6, 12, and 24 hours and compared between the groups (independent t-test) and within each group (dependent t-test). Results: No significant difference was found between the two groups in moisture absorption, but differences were observed in acid dissolution at 6 and 12 hours. In group G1, both submerged in water (p=0.0009; p=0.0094; p=0.0158) and in acid (p=0.000; p=0.000; p=0.000), significant differences were found at 6, 12, and 24 hours, respectively. In group G2, submerged in water (p=0.3279; p=0.0004; p=0.0000) showed differences at 12 and 24 hours, and in acid (p=0.0000; p=0.0000; p=0.0000), no significant differences were observed. Conclusion: No significant difference was found in moisture absorption between using or not using surface protection over the 24-hour period; however, differences in acid dissolution were observed between the two groups.