Figure 4: Periodontal healing of root surface after transplantation a) The remove group that was implanted immediately after extraction and remove of periodontal ligament on root surface (Hematoxylin and Eosin original magnification ×40): The ankylosis and inflammatory resorption was observed on the root surface, b) The 0w group that was implanted immediately after extraction (Hematoxylin and Eosin original magnification ×40): The connective tissue formation was observed between the bone surface of inner wall of bone cavity and root surface, c) The 2w group that was implanted after tissue culture for 2 weeks (Hematoxylin and Eosin original magnification ×40): The connective tissue formation was observed, d) The 4w group that was implanted after tissue culture for 4 weeks (Hematoxylin and Eosin original magnification ×40): The connective tissue formation was observed. D: Dentin, C: Cementum, B: Bone