Avaliação da união de resinas compostas a estrutura dentinária considerando a presença ou não de materiais de base

• Autor(a) principal: Tarnoschi, Larissa Maria Alessio [UNESP]
• Data de Publicação: 2010
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/149327; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-01-25/000851524.pdf
• topic: Dentina; Resinas compostas; Resinas sintéticas; Dentin

Once established in the union adhesive restorative procedures, its integrity could be compromised over time by the effects of stress-type chemical and mechanical bond in the interface allowing the occurrence of microleakage. Thus, this research was carried out to evaluate the marginal integrity in the composite resin restorations, using or not materials. Eighteen human molars received preparation class II with margin in dentin / cement and the cavities were restored as follows: GI - Phosphoric Acid to 37% + Adhesive System XPBond + Composite Resin Esthet-X; GII - Polyacrilic Acid to 20% + Glass Ionomer Riva Light Cure + Phosphoric Acid to 37% + Adhesive System XPBond + Composite Resin Esthet-X. and GIII - Phosphoric Acid to 37% + System Adhesive XPBond + Tetric Flow Resin + Composite Resin Esthet-X. The specimens were prepared and submitted to the marginal microleakage, with silver nitrate, distal cut mesi in order and cuts seen in stereoscopic microscope to an increase of 20X to check the degree of leakage. The average scores and their standard deviation for the groups were: GI 3.75 (0.45), GII 2.33 (0.98) and GIII 1.33 (0.65), demonstrating that no combination restorative prevent the occurrence of leakage, and statistical tests showed a statistically significant difference supremacy between the two groups of behavior for the GI group was used where the resin Flow best managed microleakage. Taking into account the results of this study it was concluded that no restorative technique eliminated completely microleakage; restorations of class II cavities with composite resin, where the walls are neck with little or no enamel, the use of flexible bases are necessary, and the resin high flow (Flow) showed better control of microleakage