Glass-ionomer-resin cements carry the advantages of both traditional glass-ionomer cements (such as esthetics and fluoride ion leaching) and light-curing resins (such as adhesive bonding to tooth structure and rapid material hardening by visible light exposure). In addition, their physical properties are improved over those of self-hardening glass-ionomer cements. The glass-ionomer-resin cements can be used to restore primary teeth quickly and successfully. The technique for simultaneously restoring adjacent Class II lesions in primary teeth is presented.