Comparación de los grados de conversión entre los cementos dual y de fotoactivación
Objective: To determine the degree of in vitro conversion of dual activation resinous cement and a photoactivation resinous cement. Materials and methods: 2 resin cements were investigated and 2 groups of 6 samples of each were formed, these samples were processed in 3 moments: prior to photoactivat...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Ecuador |
| Institución: | Universidad de las Américas |
| Repositorio: | Repositorio Universidad de las Américas |
| Idioma: | español |
| OAI Identifier: | oai:dspace.udla.edu.ec:33000/11893 |
| Acceso en línea: | http://dspace.udla.edu.ec/handle/33000/11893 |
| Access Level: | acceso abierto |
| Palabra clave: | ODONTOLOGÍA RESTAURADORA MATERIALES DENTALES |
| Sumario: | Objective: To determine the degree of in vitro conversion of dual activation resinous cement and a photoactivation resinous cement. Materials and methods: 2 resin cements were investigated and 2 groups of 6 samples of each were formed, these samples were processed in 3 moments: prior to photoactivation, immediately after being photoactivated with direct light and the last scan 24 hours after its photoactivation; in the second group in the same way, having the difference that this time the samples were photoactivated through a 1.5 mm thick ceramic disk, the samples were analyzed by Fourier transformation spectroscopy with attenuated total reflection. Results: By means of the statistical study carried out through a 1-factor ANOVA, assuming equal DMS variances and with a significance of 0.05, the means of the degrees of conversion of the cements studied were obtained, in the immediate scanning position, direct activation , in which the light source was placed closest to the sample we obtained Allcem Veneers: 44.9 percent Allcem Dual: 51.89 percent at 24 hours Allcem Veneers: 61.47 percent Allcem Dual: 60.49 percent, in poscura immediate scan, activation through ceramic disc, Allcem Veneers: 37.25 percent Allcem Dual: 29.29 percent at 24 hours Allcem Veneers: 58.28 percent Allcem Dual: 60.97 percent. Conclusions: The degree of conversion of both cements showed significant differences immediately after photoactivation depending on whether the light was direct or through a ceramic disk, the dual cement being superior when the light was direct with 6.99 percent in relation to to photoactivation cement, when the samples were irradiated through the ceramic disk the photoactivation cement was 7.96 percent higher than the dual cement, while at 24 hours no significant differences were found in the degree of conversion, in direct irradiation the degree of conversion of the photoactivation cement was higher than the dual cement with 0.98 percent, when the ceramic disc was interposed, the degree of conversion of the dual cement was 2.69 percent higher than the photoactivation cement. |
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