What is the recommended incisal reduction for a porcelain fused to metal (PFM) crown?

The recommended incisal reduction for a porcelain fused to metal (PFM) crown is typically around 1.3-1.5 mm, which allows for adequate space for the porcelain layer to ensure strength, aesthetics, and proper contour of the restoration. This amount of reduction not only accommodates the thickness of the metal substructure but also provides enough bulk for the porcelain to create the desired esthetic quality without compromising the crown's durability.

When considering incisal reduction, it's important to maintain a balance between enough material to support the esthetic overlay and minimizing the reduction to preserve tooth structure. While 0.5 mm or 1 mm may not provide sufficient thickness for the porcelain layer, 2 mm could lead to unnecessary loss of tooth structure, which can impact the health and function of the natural tooth. Therefore, opting for a reduction in the range of 1.3-1.5 mm is the most appropriate recommendation to achieve a successful PFM crown restoration.