Prospective Clinical Split-Mouth Study of Pressed and CAD/CAM All-Ceramic Partial-Coverage Restorations: 7-Year Results

The aim of this prospective clinical split-mouth study was to investigate the long-term performance of pressed and computer-aided design/computer-assisted manufacture (CAD/CAM) all-ceramic partial-coverage restorations (PCRs). Twenty-five patients were restored with 40 lithium disilicate pressed PCRs (IPS e. max-Press, Ivoclar Vivadent) and 40 leucite-reinforced glass-ceramic CAD/CAM PCRs (ProCAD, Ivoclar Vivadent). All restorations were placed in vital first or second molars. The 7-year Kaplan-Meier survival rate was 100% for pressed PCRs and 97% for CAD/CAM PCRs. Both systems showed significant deterioration over time in all modified United States Public Health Service criteria. Increased surface roughness and impaired color match were significantly more prevalent with pressed PCRs. Based on the 7-year data, both all-ceramic systems can be considered reliable treatment options for posterior PCRs. Int J Prosthodont 2013;26:21-25. doi: 10.11607/ijp.3043