An In-situ Tooth Filling System and Method Utilizing External Curing Step. The method and system utilizes the heat-/light-/vacuum-curing process normally available only in a dental laboratory. Like the conventional dental prosthetic production process, the filling is attached to the tooth void utilizing curable cement. Unlike the conventional (indirect) method, however, the instant method is completed totally within a single appointment in the dentists office. The system utilizes fill stems that are made from curable filling material. These stems will become a part of the filling when the filling is cured. The filling is partially cured and then removed from the tooth for final curing in a vacuum oven that heat- and/or light-cures the filling.