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.

包裹着牙根的是牙骨质，是一种骨样物质，也是牙周韧带纤维连接的部分。

It will increase your risk, not only for cavities, but periodontal rot.

它会增加的风险，不仅是龋齿，还有牙周腐烂。

You have something much worse: periodontal disease.

有更严重的问题：牙周病。

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

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

Animals as adults commonly get periodontal disease, so we really should be brushing their teeth, and more pet owners are starting to do this.

成年动物经常会得牙周病， 所以我们真的应该给它们刷牙，越来越多的宠物主人开始样做。

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；些变化会导致多种微生物的定植，尤其是牙周致病菌的定植，可能会威胁到孕妇健康。

These include stem cells from human exfoliated deciduousteeth (SHED), stem cells from apical papilla (SCAP), dental follicleprecursor cells (DFPCs), periodontal ligament stem cells (PDLSCs), and gingiva-derived mesenchymal stem cells.

些包括来自人类脱落的脱落的干细胞(SHED), 来自顶乳头(SCAP)的干细胞, 牙囊前体细胞(DFPC), 牙周韧带干细胞(PDLSCs)和牙龈来源的间充质干细胞。

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.

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。