I find a fast curing light to be indispensable in restorative dental work. As a pediatric dentist, I often have to work quickly due to children's short attention spans. Typically, hardening or curing the filling material takes about 20 seconds in regular mode. However, with the fast mode, this time is reduced to just 3-5 seconds. This increased speed significantly enhances time efficiency and helps the child complete the treatment more swiftly.