What is the depth of occlusal guiding grooves in metal-ceramic restoration typically?

The depth of occlusal guiding grooves in metal-ceramic restorations is typically designed to be 0.2 mm less than the final occlusal reduction. This specific depth is critical in ensuring that the restoration fits properly into the prepared tooth and provides adequate clearance for the opposing dentition while allowing for functional articulation.

By setting the grooves at this depth, it ensures that the ceramic material can achieve the necessary thickness for strength and aesthetics, while still accommodating the functional movements of the teeth. Maintaining a precise relationship through the guiding grooves helps to manage occlusion effectively, reducing the risk of interfering contacts that could lead to wear or failure of the restoration.

This attention to detail in the occlusal design is essential for the longevity and effectiveness of the metal-ceramic prosthesis, as it balances the requirements for both function and aesthetics.