几个研究已经证实牙龈疾病与其他慢性炎症性疾病如糖尿病、心血管疾病以及风湿性关节炎有关。
Several research studies have associated gum disease with other chronic inflammatory diseases such as diabetes, cardiovascular disease, and rheumatoid arthritis.
超过130万的美国人患有一种慢性炎症性关节疾病----类风湿性关节炎（RA）。
Over 1.3 million Americans suffer from rheumatoid arthritis (RA), a chronic, inflammatory disease of the joints.
风湿性关节炎是一种慢性炎症性疾病，它能够引起关节肿胀和疼痛。
Rheumatoid arthritis is a chronic inflammatory disease that causes pain and swelling of the joints.
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