Final answer:
The recommended minimum thickness for amalgam in dental fillings is about 1.5 to 2 mm to provide sufficient resistance and strength for chewing forces.
Step-by-step explanation:
The question of amalgam thickness for resistance in dental applications doesn't have a one-size-fits-all answer, as it depends on the size and location of the cavity being filled. However, generally speaking, the minimum thickness recommended for amalgam restorations is about 1.5 mm to 2 mm to ensure adequate strength and resistance to the forces of mastication. Dentists take into account the amalgam's composition, which is typically 50% mercury by weight, balancing concerns over mercury toxicity with the amalgam's affordability, ease of use, and durability. While the amount of mercury has raised health concerns, the longevity and effectiveness of amalgam fillings continue to make them a viable option in many cases.