Method: Fourty- six patients with at least 2 Class v lesions were enrolled in this study. A total of 175 Class V carious lesions having the gingival margins extending into cementum were restored with the tested materials. A Calibrated operator placed the restorations according to each manufacturer's instruction. The restorations were finished with super fine diamond point, and polished with Soflex Discs (3M, Espe).Two independent examiners evaluated the restorations at baseline, after 1 year, two years and three years according to the modified USPHS criteria. The differences between tested materials were statistically evaluated by Pearson Chi-Square test (p=0, 05)
Result: After three years, 131 restorations were available for evaluation (Recall Rate= 74.8%). one Ionolux restoration was lost after three years while four restorations of Fuji II LC and five restorations of Ketac Nano were lost. (retention rate 92%)
Conclusion: After three years , limited deterioration in marginal adaptation and slight surface roughness were detected for ionolux restorations. In contrast Fuji II LC and Ketac nano showed significant deterioration in some of tested criteria. The clinical performance of all tested materialas was clinically acceptable