Remove all loose and splintered particles and damaged edge tooth. Before filling, the underground should be "locked" and dry. Liquefy FSG-Hard wax 'C' with a gas-melter (middle level) or an electric melter (stage hard wax) and fill the damages area in layers. Do not work too hot! FSG-Hard wax 'C' is applied viscous to avoid blistering. Plane-off remainings. To seal the surface, use a Spray Lacquer transparent.