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. 2020 Dec 10;25(24):5819. doi: 10.3390/molecules25245819

Figure 2.

Figure 2

The histologic section of an incisor tooth and periodontal tissue of rats. (A) Treatment control group, a and b. Intact junctional epithelium with mild inflammatory cells (black head arrows) in the insertion point, c. Regular bone surface with well-formed dense bone, a wide periodontal ligament space of uniform thickness filled with organized proliferating periodontal ligament tissue attached to a regular cementum surface and multiple blood vessels (red arrow, H&E, scale bar 10 μm in section a, and 20 μm in section b and c). (B) EOK or tested treatment group, a and b. Intact junctional epithelium with mild inflammatory cells (black head arrows) in the insertion point (section b), c. Regular bone surface with well-formed dense bone, and dilated blood vessels (red arrow), d. A wide periodontal ligament space of uniform thickness filled with less organized proliferating periodontal ligament tissue attached to a regular cementum surface (H&E, scale bar 10 μm in section a, and 20 μm in section b–d). (AB; alveolar bone, PL; periodontal ligament and C; cementum).