The other groups were observed diffuse inflammatory cells, forming periodontal pockets after 4 weeks, abscesses in subgingival tissue after 8 weeks and bone absorption after 10 weeks.

• 实验组四周时有牙龈炎症细胞浸润、牙周袋形成，在8周甚至有龈下脓肿形成；10周时牙龈仍有炎症、牙周袋，并出现骨吸收现象。