What is the occlusal clearance measurement for gold restorations?

The measurement for occlusal clearance in the context of gold restorations is crucial for ensuring proper function and longevity of the restoration. The ideal measurement typically cited for gold restorations includes 1.5 mm of functional occlusal clearance and 1 mm of non-functional occlusal clearance.

Functional occlusal clearance refers to the space necessary for the restoration to withstand occlusal forces during activities like chewing without causing excessive wear or failure. A 1.5 mm clearance allows for enough material to absorb these forces effectively.

Non-functional occlusal clearance, often less than functional, is measured at 1 mm. This is relevant in areas where the restoration does not experience direct occlusal load, such as on the lingual or palatal aspects where no opposing occlusal contact occurs during function.

Using these specific measurements helps to ensure that gold restorations are both functional and aesthetically pleasing while also providing sufficient material to prevent fracture or wear over time. Thus, the correct choice regarding these measurements aligns with established guidelines in restorative dentistry.