What is the typical duration for an amalgam filling to set?

The typical duration for an amalgam filling to reach complete hardness is indeed approximately 24 hours. This timeframe is based on the properties of dental amalgam, which is a mixture of metals used for dental restorations. Initially, amalgam sets quickly, allowing for immediate function and the ability to chew, usually within about 1 hour. However, achieving complete hardness and maximum strength takes longer, around a full day.

This 24-hour period is important because it ensures that the material has fully cured and can withstand biting forces without risk of fracturing or failing. During this time, it is advisable to avoid placing excessive stress on the filling to allow it to reach its optimal durability. Understanding these timeframes is essential for proper patient care and advice following the placement of amalgam restorations.