Fracture resistance of cingulum rest seats in CAD-CAM tooth-colored crowns for removable partial denture abutments

摘要

Statement of problem. The prevalent use of computer-aided design and computer-aided manufacturing (CAD-CAM) for tooth-colored ceramic materials has led to several case reports and retrospective clinical studies of surveyed crowns used to support removable partial dentures. How the specific contour of a cingulum rest seat affects the fracture resistance of these CAD-CAM tooth-colored materials is unknown.