What factor should be prioritized when considering the reduction of functional cusps in a PFM crown?

When considering the reduction of functional cusps in a porcelain-fused-to-metal (PFM) crown, prioritizing functional stability is essential. Functional cusps are designed to withstand the forces of occlusion during biting and chewing. Proper reduction of these cusps is crucial to ensure that the crown can absorb and distribute these forces without compromising the integrity of the restoration or the underlying tooth structure.

By focusing on functional stability, the clinician aims to prevent any adverse effects such as premature wear, fracturing of the crown, or undue stress on the supporting tooth. This consideration directly impacts the longevity and performance of the crown in a clinical setting.

While aspects such as esthetic considerations, load distribution, and surface finish are also important, they come into play after ensuring that the crown provides a stable and functional occlusion. If the functional stability is compromised, it could lead to significant complications, making this factor the top priority in the context of reducing functional cusps in a PFM crown.