Together, the gums and other structures that support the teeth are known as the periodontium.

牙龈和支撑牙齿的其他结构一起被称为牙周组织。

Also, some systemic diseases such as diabetes, rheumatoid arthritis, and systemic lupus erythematosis can enhance inflammation in the periodontium which can lead to a shift in bacterial composition and increase the risk or severity of periodontitis.

此，某些系统疾病，例如糖尿病、类风湿关节炎、系统红斑狼疮，会增加牙周组织炎症，从而改变口物群中细菌的组成，并增大患牙周炎的风险或加重牙周炎。