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Figure 5: Group IV. (a) Macroscopic aspects of residual roots. (b-e) Histological sections. (b) Periodontal ligament region with presence of biofilm (Brown and Brenn; ×132 magnification). (c and d) Presence of bacteria in pulp tissue with necrosis and inner resorption (Brown and Brenn and H and E; ×33 magnification). (e) Inflammatory pathological resorption and inflammatory reaction in periodontum (H and E, ×33)

Figure 5: Group IV. (a) Macroscopic aspects of residual roots. (b-e) Histological sections. (b) Periodontal ligament region with presence of biofilm (Brown and Brenn; ×132 magnification). (c and d) Presence of bacteria in pulp tissue with necrosis and inner resorption (Brown and Brenn and H and E; ×33 magnification). (e) Inflammatory pathological resorption and inflammatory reaction in periodontum (H and E, ×33)