Flexure strength of resin-modified glass ionomer cements and their bond strength to dental composites

Abstract

The flexure strength of three resin-modified glass ionomer cements and one conventional glass ionomer cement and their bond strength to dental composites were studied by measuring the three-point bending and the shear strengths. The bond strengths between the dental composite and the resin-modified glass ionomer cements were dependent on the curing modes. Resin-modified glass ionomer cements bonded significantly more strongly to cured dental composites than dental composites bonded to cured resin-modified glass ionomer cements. However, the dental composites showed a significantly stronger bonding to the resin-modified glass ionomer cements than to the cured conventional glass ionomer cement, to which the dental composite did not adhere without acid etching. The flexure strengths of the resin-modified glass ionomer cements were significantly improved compared with the conventional one but were still significantly lower than that of the dental composites.

Shear bond strength evaluation of resin composite bonded to glass-ionomer cement using self-etching bonding agents with different pH: In vitro study

“…This could be attributed to the difference in the setting reactions between dental composites and conventional GICs. [6] Bond strengths improve if the GIC is etched after 24 h of maturation. [78] However, this procedure requires an additional clinical visit to complete a restoration.…”

Influence of surface treatment of glass-ionomers on surface free energy and bond strength of resin composite

“…This technique benefits from the advantages of fluoride release combined with aesthetic resin material to enhance clinical serviceability. However, the bond between conventional GIC and resin composite is limited by the low cohesive strength of this material, and by minimal chemical bonding between two materials due to the different chemical reactions 5) . Clinically, the GIC lining/base contain micro-porosities and have a surface roughness that will provide micro-mechanical bonding to the resin composite.…”

Reverse Sandwich Restoration for the Management of Invasive Cervical Resorption: A Case Report

“…Microfilled resin was used along with RMGIC in RSR because they tend to flex with the tooth rather than debond as compared with the more rigid macrofilled resin (31). In addition, when RSR is compared with conventional sandwich restoration, RMGIC forms a significantly stronger bond to cured resin composite in RSR than that of resin composite to cured RMGIC in the absence of etching (32). The development of subgingival plaque over RMGIC is prevented by achieving a smooth finish using the cervical matrix.…”