Which of the following is false about glass ionomer cement?
The adhesion of GIC to dentin reduces the probability of gap formation at gingival margins located in dentin or cementum, compensating for the polymerization shrinkage of the overlying resin-based composite restoration on the hybrid ionomer base.
Ref: Phillip’s Science of Dental Materials ed 12 pg 327
Acid treatment of the tooth surface is required before placement
Poor marginal seal
Low fracture resistance
Has ability to renew broken ionic bonds