Definite Implant Position as Novel Readout for Effectiveness of Ridge Preservation Indicates to Beneficial Effect of Combined Treatment with Platelet-Rich Fibrin (PRF) and Xenogenic Biomaterial in Bone Regeneration. - Heselich, Anja; Mann, Sebastian; Wiegner, Jörg-Ulf; Ghanaati, Shahram (Bioengineering (Basel), 2026)