What is the typical occlusal reduction width for a mesio-occlusal-distal (MOD) restoration?

The typical occlusal reduction width for a mesio-occlusal-distal (MOD) restoration is expected to be at least 1.5 mm. This ensures that there is enough space to accommodate the restorative material while maintaining a proper occlusal relationship with opposing teeth. Sufficient reduction is crucial for achieving an optimal outcome that promotes function and aesthetics.

When considering negative values, such as -0.8 mm or -3 mm, these would not apply in this context, as they imply a reduction that is not feasible or applicable in the scenario of a dental restoration. A positive occlusal reduction, on the other hand, indicates that the tooth structure has been adequately prepared to receive the restorative material.

Thus, the correct answer effectively reflects the necessary preparation needed for a successful MOD restoration, supporting the integrity and durability of the final dental restoration. The initial choices presented emphasize the importance of understanding the correct occlusal reduction in prosthetic dentistry.