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Representative μCT images. Sectional images of the central part of the defect site and surrounding tissue were viewed from the buccal side. Upper column, 6 weeks; lower column, 24 weeks. D: dentin, NB: new bone, B: existing bone, yellow arrowheads: defect bottom, yellow dot line: the border between the defect site and the existing bone. Scale bar represents 2 mm.
