The purpose of the present studied it was to measure and to evaluate the difference from the resistance to the adhesion to the tension in two groups of dental pieces. In this he/she studied in vitro forty human premolars they were used extracted with ends orthodontics. The forty premolars was divided at random in two groups of twenty premolars each one. To both groups they were carried out previous prevention, later on the recording (sour fosfòrico to 37%) acid was placed, bond was placed to both groups and finally the corresponding resins: * Group 1 (Transbond XT 3M) * Group 2 (In-Light Ormco) were carried out the test of tension in each sample, in the universal machine of tests Instron model 1125, the results were registered for both groups. Both results suggest that the resistance average of the adhesion to the tension was bigger in the group 1 to which was applied the resin Transbond XT 3M giving a great difference to the detachment with the group 2 to which was applied the resin In - Light Ormco.
El propósito del presente estudió fue medir y evaluar la diferencia de la resistencia a la adhesión a la tensión en dos grupos de piezas dentales. En este estudió in vitro se utilizaron cuarenta premolares humanos extraídos con fines ortodónticos. Los cuarenta premolares fueron divididos al azar en dos grupos de veinte premolares cada uno. A ambos grupos se le realizaron previa profilaxis, posteriormente se colocó el ácido grabador (ácido fosfórico al 37%), se colocó bond a ambos grupos y finalmente las resinas correspondientes: *Grupo 1 (Transbond XT 3M) *Grupo 2 (En-Light Ormco) Se realizó la prueba de tensión en cada muestra, en la máquina universal de pruebas Instron modelo 1125, los resultados fueron registrados para ambos grupos. Ambos resultados sugieren que el promedio de resistencia de la adhesión a la tensión fue mayor en el grupo 1 al cual se le aplicó la resina Transbond XT 3M dando una gran diferencia al desprendimiento con el grupo 2 al cual se le aplicó la resina En- Light Ormco.
