What should the final configuration of a chamfer be?

The final configuration of a chamfer is ideally smooth and continuous mesiodistally because this design promotes optimal adaptation and fit of the prosthetic restoration. A smooth contour helps to distribute occlusal forces evenly and reduces stress concentrations that could lead to failure or complications in the future. The continuous nature of the chamfer ensures that there are no abrupt changes in thickness or contour, which can improve the sealing properties of the junction between the tooth structure and the restorative material.

In a clinical context, a smooth mesiodistal configuration also facilitates easier finishing and polishing of the restoration, leading to better aesthetics and maintenance of periodontal health. A well-constructed chamfer can enhance retention and resistance form, which are key considerations in prosthetic dentistry.

Other configurations, such as those that are parallel to various planes or V-shaped, might not provide the same level of adaptability or stress distribution, making them less favorable for achieving an effective and durable restoration.