EFFECT OF THE ADHESIVE ON THE BOND STRENGTH BETWEEN GLASS IONOMER CEMENT AND COMPOSITE RESIN

Camilla Lage MARTINS, Michel Sena Fernandes Faria LIMA, Douglas Visconte GONÇALVES, Gabriela Rodrigues PIRES, Lais Sant´Ana MUNARI, Alberto Nogueira da Gama ANTUNES

Resumo


The growing demand for aesthetic restorations in the posterior region has become a fundamental part of dental practice, reflecting the increasing interest in aesthetic materials. However, finding a restorative material that exhibits ideal characteristics similar to dental structure has always been a challenge in dentistry. In pursuit of these properties, techniques that combine the physical and chemical aspects of different materials are being explored to ensure the success of long-lasting aesthetic restorations in the posterior region. This study investigates the "sandwich" technique, which combines glass ionomer cement and composite resin, through in vitro shear strength tests. The objective was to evaluate the effectiveness of this technique with different types of adhesive systems. A total of 360 adhesions were performed on the surface of resin-modified glass ionomer cement, Riva (SDI, Australia), divided according to the adhesive material: Scotchbond™ Universal Plus 3M™, Adper™ Single Bond 2 3M™, Adper™ Scotchbond™ 3M™. Additionally, the influence of phosphoric acid conditioning on the resin-modified glass ionomer cement and artificial aging through immersion of the specimens in a humid environment for 6 months were evaluated. It was concluded that, after storage, a reduction in shear strength values was observed for the group using the Universal adhesive when phosphoric acid was applied. The other groups did not show a reduction in values, regardless of the phosphoric acid application on the resin modified glass ionomer cement. After 6 months of storage, an increase in cohesive fractures was observed.

Keywords: Dentin-bonding agents, glass ionomer cements, shear strength.


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Referências


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