Fig. 3From: PRGF as adjunct to DBB in maxillary sinus floor augmentation: histological results of a pilot split-mouth studyPanoramic X-ray of the case presented in Fig. 2, 6 months post-operatively (a), showing increased radio-opacity in both grafted sinuses. Biopsies were obtained with trephine burs during oral implant site preparation (b)Back to article page