What should be the approach when facing a cracked cusp?

When facing a cracked cusp, the recommended approach involves reducing the cusp by 2mm while following the natural outline of the cusp. This method is effective because it ensures that the remaining tooth structure is given adequate support, which is critical for the longevity and stability of the restoration. By contouring to the original outline, the restoration can better mimic the natural tooth, maintaining aesthetics and function.

Additionally, following the cusp's outline allows for an even distribution of forces across the tooth during function, reducing the risk of further fracture. Properly reducing the cusp ensures that there is enough sound tooth structure remaining to support a restoration, such as a crown or onlay, if needed after the reduction. This option balances effective treatment for the cracked area while maximizing the integrity of the surrounding tooth structure.