Fig. 4From: Efficacy of hyaluronic acid, absorbable collagen sponge, and their combination in minimizing bisphosphonate-related osteonecrosis of the jaws (BRONJ) after dental extraction: a preliminary animal histomorphometric studyAlveolar bone cross-section in the control group without treatment 2 weeks after tooth extraction, a significant number of empty lacunae (arrow) and lacunae with pyknotic nuclei (arrow tip) are seen (H&E)Back to article page