The invention relates to:- A resilient resorbable chemically crosslinked collagen sponge for promoting soft tissue volume augmentation in the oral region, comprising 60-96 % (w/w) collagen and 4-40 % (w/w) elastin, which shows by mercury intrusion porosimetry interconnected pores with a median pore diameter between 50 and 90 µm and at least 80 % porosity with a pore diameter more than 10 µm, an onset temperature of 45 to 57 °C and a density in dry state from 50 to 65 mg/cm3.- A process for preparing that resilient resorbable chemically crosslinked collagen sponge, and- That resilient resorbable chemically crosslinked collagen sponge for use as an implant in the oral cavity for soft tissue volume augmentation
