En este estudio se evaluó la microdureza superficial “in vitro” de dos materiales restauradores; una resina de metacrilato FILTEK Z350XT y una resina de silorano FILTEK P90.
Se elaboraron 10 cilindros de 6mm de diámetro por 6mm de altura de cada uno de los materiales en estudio, siendo polimerizadas por LED a 40 segundos para luego ser almacenadas en agua destilada a 37ºC durante 24h. Se realizó la medición de la microdureza de todas las muestras con un microdurómetro aplicando una carga de 500gr por 10 segundos para finalmente ser observados en un microscopio a 20x. Los datos fueron sometidos a la prueba T-Student con un nivel de confianza de 95%. Los resultados mostraron que el grupo de resina de metacrilato Z350XT tuvo un promedio de microdureza superficial de 86.40 Kg/mm2, mientras que el grupo de la resina de silorano P90 presentó un promedio de microdureza de 84.64 Kg/mm2. Los datos mostraron un p=0.0066 siendo estadísticamente significativa entre las resinas evaluadas. Concluyendo que la resina de metacrilato fue la que presentó mayor valor de microdureza respecto a la resina de silorano.
Palabras claves: dureza, resinas, silorano. / --- In this study was evaluated the in vitro surface microhardness from two restorative materials; FILTEK Z350XT methacrylate and FILTEK P90 silorane resins.
Ten cylinders were elaborated of 6mm diameter by 6mm high for each one of the materials used in this study, light cured by LED during 40 seconds to then be stored in distilled water at 37 degrees Celsius for 24 hours. Microhardness measurement was reach at all samples with a microdurometer applying a loading of 500g by 10 second, finally samples were observed in a microscope at 20x magnification. The data were subjected to the student t-test with a confidence level at 95%. The results showed that group of methacrylate composite Z350 XT had a superficial microhardness average of 86.40 Kg/mm2, while the group of silorane composite P90 showed microhardness average of 84.64 Kg/mm2. The data showed p = 0.0066 being statistically significant, between composites observed. Concluding that methacrylate composite presented higher microhardness value instead of silorane composite.
Keywords: hardness, composites, silorane
| Identifer | oai:union.ndltd.org:Cybertesis/oai:cybertesis.unmsm.edu.pe:cybertesis/3425 |
| Date | January 2013 |
| Creators | Salas Castro, Yeni Mercedes |
| Contributors | Lozano Castro, Felipe Enrique |
| Publisher | Universidad Nacional Mayor de San Marcos |
| Source Sets | Universidad Nacional Mayor de San Marcos - SISBIB PERU |
| Language | Spanish |
| Detected Language | English |
| Type | info:eu-repo/semantics/bacherlorThesis |
| Source | Repositorio de Tesis - UNMSM, Universidad Nacional Mayor de San Marcos |
| Rights | info:eu-repo/semantics/openAccess |
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