The book explores the significance of lithium disilicate and zirconia in restorative dentistry. It traces the evolution of ceramics, highlighting advancements from traditional to modern applications. It provides a detailed classification of dental ceramics. A detailed analysis of the physical and mechanical properties, biocompatibility, surface treatment and marginal fit of lithium disilicate and zirconia is presented. The concluding section provides a comprehensive overview of the clinical applications of lithium disilicate and zirconia. It discusses their use in crowns, bridges, veneers, and implant-supported restorations, supported by case studies and clinical outcomes.