The completed reduction of the incisal edge on an anterior tooth should allow for adequate material thickness to permit translucency in the completed restoration. What is the required thickness?

The required thickness for adequate material translucency in a completed restoration is 2mm. This thickness is critical because it allows the restorative material to display the necessary optical properties that mimic natural tooth enamel. Translucency is vital for achieving a lifelike appearance, as natural teeth exhibit variations in color and light transmission.

At 2mm, the material is thick enough to create a natural look while maintaining the structural integrity needed for the restoration to withstand occlusal forces. If the thickness were less than this, such as at 1mm, the material may not have sufficient translucency or strength, which could result in an unnatural appearance or an increased risk of fracturing. Material thicknesses greater than 2mm, such as 3mm or 4mm, could lead to reduced light transmission and potentially compromise the aesthetic properties intended in the restoration. Thus, the choice of 2mm strikes an optimal balance.