Repair of fractured lithium disilicate restorations with partial feldspathic ceramic veneers

The purpose of this case report is to describe the use of partial feldspathic ceramic veneers to restore a fractured lithium disilicate ceramic restoration. Feldspathic ceramics have almost the aesthetic property of enamel, and they have good light transmission property, but its mechanical properties particularly when used over reduced dentin has been the subject of controversy. This case report presents the restoration of a distal fracture on the incisal margin of a layered lithium disilicate restoration, where only the feldspathic ceramic layer was damaged, and was repaired using a partial feldspathic veneer. Although the veneer was successfully adapted to incisal plane, there is a remarkable discrepancy in terms of esthetic finish in that there is a clear line of separation between the newly placed veneer and the existing restoration. The failure of lithium disilicate restoration under three months of service shows that the choice of materials and an evaluation before repair is critical. This case shows direction of feldspathic ceramics to the multifaceted restorative tasks, focusing on the necessity of the complex bonding and material science approaches for improved both performance and esthetic characteristics. The study indicates that feldspathic veneers may be useful to rehabilitate feldspathic ceramic restorations however; it is not easy always to completely achieve an aesthetic success.