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Figure 4: Histological feature of sodium hypochlorite group. (a) Photomicrograph × 40 magnification shows area mild chronic inflammatory cell infiltrate predominantly composed of lymphocytes and necrosis dilated blood vessels at 3 months. (b) Photomicrograph × 40 magnification area of mild necrosis in radicular pulp at 3 months. (c) Photomicrograph at × 40 magnification chronic minimal inflammatory cell infiltrate composed predominantly of lymphocyte at 6 months. (d) Photograph at × 40 magnification dentin bridge formation between NAOCl and pulp chamber with intact odontoblast layer and no inflammatory cells at 6 months

Figure 4: Histological feature of sodium hypochlorite group. (a) Photomicrograph × 40 magnification shows area mild chronic inflammatory cell infiltrate predominantly composed of lymphocytes and necrosis dilated blood vessels at 3 months. (b) Photomicrograph × 40 magnification area of mild necrosis in radicular pulp at 3 months. (c) Photomicrograph at × 40 magnification chronic minimal inflammatory cell infiltrate composed predominantly of lymphocyte at 6 months. (d) Photograph at × 40 magnification dentin bridge formation between NAOCl and pulp chamber with intact odontoblast layer and no inflammatory cells at 6 months