To evaluate clinical performance of three different resin composites (microfilled, nanohybrid, nanofilled) polished with one-step polishing system in cervical restorations after 24 month. Thirty adult patients were selected from outpatient clinics with a total of 90 restorations (30 of each type of dental composite resin). All of the restorations were finished using fine grit finishing diamond under water-cooling to remove gross excess and polished with one-step polishing system. All restorations showed only minor changes and no differences were detected between their performance at any time period. Nanofill and nanohybrid composite resin showed a satisfactory clinical performance after 24 month as microfill composite resin.