In vitro assessment reveals that 15-minute intervals yield optimal shear bond strength in enhanced Mineral Trioxide Aggregate and glass ionomer cement.
The shear bond strength (SBS) between enhanced Mineral Trioxide Aggregate (e-MTA) and glass ionomer cement (GIC) under different placement intervals is of interest. Sixty acrylic blocks filled with e-MTA were restored with GIC at 0 min, 15 min and 24 h. The highest SBS (12.47 ą 1.29 MPa) was observed at the 15-minute interval. Predominantly mixed failures were seen in Groups II and III, while cohesive failures occurred in Group I. Applying GIC 15 minutes after e-MTA yields optimal bonding for durable restorations.
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Singh et al. (2025) studied this question.
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