Comparative and non-invasive study of two different ceramic materials

The purpose of this study is to investigate through imagistic methods repaired metal ceramic crowns with ceramic material. Fracture of ceramic veneer may be reconstructed with either ceramic or composite resin material. The interfaces resulted are the key of success for the longevity of these metal-ceramic repaired crowns. 20 metal ceramic crowns which restore the upper first incisor were made from Ni-Cr alloy and Kiss (D.Sign ) ceramic material. A defect of 3A?3 mm was made on the buccal face of each crown. The samples were divided in two groups. Each group was repaired with a different ceramic mass. Group one was repaired with In Line ceramic (Ivoclar Vivadent) and group 2 was repaired with VMK ceramic (Vita).Reparation of the crowns generated new interfaces between different materials. The interfaces were imagistic and noninvasive investigate by X-ray and Optical Coherence Tomography. The quality of the interfaces could be evaluated and also some clinical conclusions about the materials could be obtained.