Methods: Areas of subgingival calculus were selected from 6 freshly extracted human teeth with periodontal disease.
方法：选取6颗新近拔除的有明显龈下牙石的牙周病患牙。
Freshly extracted carrot juice is one of the best natural medicines available for preventions from colds and viruses.
鲜榨胡萝卜汁可用于预防感冒和病毒，是最好的天然药物，经常饮用冰凉的胡萝卜汁还能有助于提高身体对细菌和传染病的抵抗力。
Methods Superficial occlusal dentin of 9 molars freshly extracted was finished with 600-grit SiC paper under running water.
方法选取9颗无龋坏人磨牙，用600目碳化硅砂纸在流水冲洗下预备出统一的牙本质黏结面玷污层。
Methods Superficial occlusal dentin of 9 molars freshly extracted was finished with 600-grit SiC paper under running water.
方法选取9颗无龋坏人磨牙，用600目碳化硅砂纸在流水冲洗下预备出统一的牙本质黏结面玷污层。
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