Assessment of Microleakage in Class II Cavities having Gingival Wall in Cementum using Three Different Posterior Composites.

Background: Dental composites are one of the most desired restorative materials today. Composite materials can be bonded successfully to human tooth enamel; however, developing the same degree of adhesion to dentin or cementum is a more challenging task. Polymerization contraction stress of dental composites is often associated with marginal and interfacial failures of bonded restorations.