Complex sentence: Dental Amalgam is the commonly used dental restorative material used for dental fillings first introduced in France in the early 1800s It contains a mixture of mercury with at least one other metal.
Split into simpler sentences: Dental Amalgam is the most commonly used dental restorative material used for dental fillings. First introduced in France in the early 1800s, it contains a mixture of mercury with at least one other metal.