The socket is lined on the inside by a periodontal ligament.

牙周韧带使牙槽排列整齐排列。

The root is covered by cementum, which is a bonelike substance that the periodontal ligament’s fibers attach to.

包裹着牙根的牙骨，一种骨样物，牙周韧带纤维连接的部分。

These changes may increase pathogenic organisms or their activity causing a series of oral infectious diseases such as dental caries or periodontal diseases.

这些改变可能会增加致病微生物的提高其活性，从而导致诸如龋齿、牙周疾病等一系列口腔感染性疾病。

In pregnancy, the oral microbiota goes through some important changes which lead to colonisation of various microorganisms especially periodontal pathogens that may be a risk for the health of the pregnant woman.

怀孕期间，口腔微生物群会经历许多重要变化；这些变化会导致多种微生物的定植，尤其牙周致病菌的定植，可能会威胁到孕妇健康。

This alteration can disrupt the bacterial equilibrium in the oral cavity by increasing harmful bacteria and decreasing the beneficial ones, thus leading to a series of oral infectious diseases such as dental caries, or periodontal diseases.

这种改变会增加有害菌、减少有益菌，从而破坏口腔中的细菌平衡，导致龋齿、牙周疾病等一系列口腔感染性疾病的发生。