The intensity of periapical inflammation and bone resorption increased from days 7 to . At days , periapical little abscess and granuloma can be seen, bone destruction was most significant and the number of Howship' lacunae were considerably increased.
The intensity of periapical inflammation and bone resorption increased from days 7 to . At days , periapical little abscess and granuloma can be seen, bone destruction was most significant and the number of Howship' lacunae were considerably increased.
开髓后7一天，根尖周组织炎细胞浸润与尖周牙槽骨吸收程度逐渐加重; 天组可见根尖周小的脓肿灶与肉芽组织形成，牙槽骨吸收明显，可见较多HowshiP陷窝;