Purpose: To evaluate the 2-year clinical results of a newly developed zinc-containing conventional glass-ionomer cement (ChemFil Rock, Dentsply) when used in occlusal and approximal restorations in primary molars with caries. Materials and Methods: Following caries removal and cavity preparation, the teeth were restored with ChemFil Rock. The restorations were evaluated at baseline and at 6, 12, 18, and 24 months according to the modified US Public Health Service (USPHS) criteria. Data obtained were analysed using the Mann-Whitney U-test and the Friedman test. Results: At the end of 24 months, the success rates of the occlusal and approximal restorations of the primary molars restored with ChemFil Rock were 100% and 69%, respectively. No postoperative sensitivity was reported in any restored tooth at any patient assessment time. Conclusion: These results suggest that this material is suitable for occlusal and approximal restorations in primary teeth and it demonstrated acceptable clinical results.