<prompt> Which of the following is false about glass ionomer cement?Acid treatment of the tooth surface is required before placementPoor marginal sealLow fracture resistanceHas ability to renew broken ionic bonds  <response>: 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: Phillips Science of Dental Materials ed 12 pg 327 