The dynamic development of materials science and technology in dental prosthetics makes it possible to perform restorations that are more and more aesthetic and at the same time biocompatible and durable. Zirconium oxide fulfils all of these requirements. The introduction of CAD/CAM systems to dentistry has made it possible to use this material in the production of permanent prosthetic restorations. The study describes the case of a patient aged 30 years with clefts of the lip, the alveolar process and the palate, in whom surgical orthodontic treatment was undertaken. The last stage was prosthetic treatment. He had permanent all-ceramic restorations on a zirconium oxide substructure made in the anterior segment of the maxilla