EPIDEMIOLOGICAL STUDY ON DENTAL STATUS AND TEMPOROMANDIBULAR JOINT IN SUBJECTS WITH RHEUMATOID ARTHRITIS

为了解类风湿性关节炎患者的牙齿和颞下颌关节（TMJ）情况，对142例女性类风湿性关节炎患者和143例同龄对照者进行了比较。RA组的剩余牙数和缺牙率明显低于非RA组。同时，RA组的DMF牙齿数量以及全口义齿和可摘局部义齿的使用频率显著较高。在类风湿关节炎中，颞下颌关节疼痛的主观症状发生率为1.4%，张口疼痛为4.9%，张口困难为14.8%。此外，9.2%的患者出现TMJ压痛，12.7%的患者出现咔嗒声，35.9%的患者出现捻发音。RA组中出现捻发音的受试者数量显著多于非RA组。颞下颌关节紊乱病（TMD）在RA组和非RA组中的发生率分别为67.6%和32.9%。退行性关节疾病的发生是最常见的TMD患者，这被发现与Steinbrocker的阶段和RA疾病的持续时间。

In order to understand the dental and temporomandibular joint (TMJ) in subjects with rheumatoid arthritis, 142 female patients were compared with 143 control subjects of the same age. The number of remaining teeth and edentulous rate were significantly lower in the RA group than non-RA group. Meanwhile, the number of DMF teeth, as well as frequency of complete denture and removable partial dentures were significantly higher in the RA group. In RA, the incidence of subjective symptoms was 1.4% for pain in the TMJ, 4.9% for pain on mouth opening, and 14.8% for difficulty with mouth opening. Further, signs of TMJ tenderness were found in 9.2%, clicking in 12.7%, and crepitus in 35.9% of those patients. A significantly greater number of subjects who demonstrated crepitus were found in the RA group than the non-RA group. As for temporomandibular disorders (TMD), the incidence was 67.6% in the RA group and 32.9% in the non-RA group. The occurrence of degenerative joint disorders was most frequent among patients with TMD, which was found to correlate with Steinbrocker's stage and RA disease duration.