Examination of a 12-year-old girl bu a dentist revealed a carious cavity on the mesial contact surface of tooth 46. The cavity is located within the mantle dentin, its walls and floor are pigmented and dense. Thermal stimuli provoke no response. Preparation of tooth 46 is painful in the area of the dentinoenamel junction. The decay-missing-filled index is DFM + df = 2. What filling material would be optimal in this case?