From porcelain-fused-to-metal to zirconia: Clinical and experimental considerations
Section snippets
Introduction to the review
In the last decades, since the development of porcelain-fused-to-metal (PFM) procedures in the early sixties, metal–ceramic restorations have represented the “gold standard” for years in prosthetic dentistry, thanks to their good mechanical properties and to somewhat satisfactory esthetic results, along with a clinically acceptable quality of their marginal and internal adaptation [1], [2], [3], [4], [5], [6], [7]. The predictability and consistency of positive clinical results, validated by
Glass- and alumina-based dental ceramics
An ideal all-ceramic dental material should exhibit excellent esthetic characteristics, like translucency, natural tooth color, outstanding light transmission and, at the same time, optimal mechanical properties, like flexural strength (σ), fracture toughness and limited crack propagation at the functional and parafunctional load conditions, in order to ensure lifetime serviceability. Unfortunately, today, none of the available dental ceramics fulfills all of these requirements at the same
Summary
The trend toward an increasingly extended use of all-ceramic SCs and FPDs is an undeniable reality in Fixed Prosthodontics. After the development era, dental ceramics introduced in the last 20 years exhibit different, favorable and promising esthetic and mechanical properties. At the moment, there is no one ceramic material that equally excels in all of these characteristics. The choice of one specific typology of ceramic, rather than on the latest fashion, should be based on a careful
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