Abstract
Metal-composite crowns or metal-polymeric crown are an intermediary option from the mechanical and esthetical characteristics between acrylic resin and ceramic materials. Same as in the case of other types of fix partial dentures, the esthetic veneer may present fissures or fractures. The replacement of a fix partial denture is time consuming and involves high costs. In specific clinical cases, the metal-composite fix partial dentures can be repaired with plastic materials like diacrylic composite resin. Metal-acrylic and metal-ceramic fix partial dentures can also take advantage of the diacrylic composite resin in similar situations- fracture. The repairing maneuver can be considered temporary for a longer period of time. The key of reparation’s success is the interface integrity between the two materials. Imagistic investigation methods, like Atomic Force Microscopy gives important information about the surface roughness of different materials. The purpose of the present study is the investigation of the new interface obtained after the direct reparation of metal-composite crowns with diacrylic composite resins. Keywords: crown, acrylic resins, ceramic materilas