A Y-TZP–based FPD framework may be designed using either conventional waxing techniques or computer-assisted design (CAD). CAD software may allow technicians to custom-design an FPD framework while combining traditional concepts of design with material-derived requirements. Several Y-TZP–based restorative systems for crowns and FPDs have been described in the literature. The Cercon system requires conventional waxing techniques for designing the Y-TZP–based infrastructure. The DCS-Precident and Lava systems each use a different type of CAD technology with different features and design options.