What is the minimal amount of incisal reduction necessary for esthetics in CAD/CAM restoration for the anterior dentition?

The minimal amount of incisal reduction necessary for esthetics in CAD/CAM restorations for the anterior dentition is generally considered to be around 2 mm. This amount of reduction is crucial as it allows for adequate space for the material used in the restoration, ensuring that the final product maintains a natural appearance and meets the appropriate aesthetic demands.

With 2 mm of incisal reduction, there is sufficient material thickness, which is important for both the strength and translucency of the restoration. Adequate bulk of the ceramic material helps in mimicking the optical properties of natural teeth, such as light transmission and reflection, which are essential for achieving a lifelike appearance.

Additionally, this depth is practical for designing restorations that integrate well with the existing tooth structure while providing enough clearance to avoid issues with occlusion or wear. While greater reductions may offer some benefits, they are often unnecessary and may compromise tooth structure without any significant advantage in terms of esthetics or functionality.