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Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1010007

RESUMO

Objetivo. Evaluar la resistencia adhesiva dentina-resina (RADR) en adhesivos Optibond FL (OFL), Adper Single Bond 2 (ASB2) y Single Bond Universal (SBU) en tres tiempos diferentes de aplicación. Métodos. Estudio experimental in vitro, se empleó nueve molares humanas obteniéndose, 135 especímenes de 1 mm2 aproximadamente conformando nueve grupos de estudio de 15 especímenes para cada grupo. La RADR se midió a través del test de microtensión a una fuerza de tracción con una aceleración de 0,5 mm/min hasta la fractura. El contraste de hipótesis de diferencia se realizó utilizando el test de ANOVA de un factor y comparaciones múltiples de Tukey, ambos a un nivel de confianza del 95%. Resultados. A los 10 segundos, se hallaron diferencias significativas entre los sistemas adhesivos OFL (25,78 ± 5,98 MPa) vs ASB2 (de 14,02 ± 3,06 MPa), p<0,001, así como entre OFL vs SBU (14,36 ± 4,69 MPa) con p<0,001. A los 20 segundos, entre OFL (34,37 ± 6,03 MPa) y ASB2 (16,33 ± 3,02 MPa), p<0,001, así como entre OFL y SBU (19,44 ± 5,98 MPa) con p<0,001. A los 30 segundos también se encontraron las mismas diferencias entre OFL (37,6 ± 11,93 MPa) y ASB2 (16,62 ± 1,81 MPa), p<0,001, así como entre OFL y SBU (23,56 ± 7,3 MPa) p<0,001. Conclusiones. Optibond FL presentó mayor RADR frente a ASB2 y SBU en los tres tiempos; entre ASB2 y SBU a 10 s no se encontró diferencia, a los 20 s y 30 s SBU presentó mayor RADR. En los tres grupos hubo aumento significativo de la RADR entre los 10 y 30 segundos. Palabras clave: Dentina; Adhesión dental; Adhesivos (fuente: DeCS BIREME).


Objective. To evaluate the dentin-resin bond ́s resistance (DRBR) of the adhesives Opti-bond FL (OFL), Adper Single Bond 2 (ASB2) and Single Bond Universal (SBU) with its self-engraving possibility, in three different times of application. Methods. Experimental, comparative and crossectional in vitro study. We used nine human molars, obtaining 135 specimens of 1 mm2 approximately, forming nine study groups of 15 specimens for each group. The DRBR was measured through the Microtunsion test at a tensile force with an acceleration of 0.5mm/min until a fracture.The contrast of difference hypotheses was performed using the one-factor ANOVA test and Tukey's multiple comparisons, both at a confidence level of 95%. Results. After 10 seconds, significant differences were found between the OFL adhesive systems (25.78 ± 5.98 MPa) vs ASB2 (from 14.02 ± 3.06 MPa) at p<0.001, as well as between OFL vs SBU (14.36 ± 4.69 MPa) with p<0.001. At 20 seconds, between OFL (34.37 ± 6.03 MPa) and ASB2 (16.33 ± 3.02 MPa) at level p<0.001, as well as between OFL and SBU (19.44 ± 5.98 MPa) with p<0.001. After 30 seconds, the same differences were found between OFL (37.6 ± 11.93 MPa) and ASB2 (16.62 ± 1.81 MPa) at p<0.001, as well as between OFL and SBU (23.56) ± 7.3 MPa) with p<0.001. Conclusions. OFL presented greater DRBR compared to ASB2 and SBU in the three rubs; between ASB2 and SBU rubbing 10 s no difference was found, rubbing 20 s and 30 s SBU presented higher DRBR. In all three groups there was a significant increase in DRBR between 10 and 30 seconds. Keywords: Dentin; Dental bonding; Adhesives (source: MeSH NLM).

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