Research Article
Significance of Circulating and Crevicular Matrix Metalloproteinase-9 in Rheumatoid Arthritis-Chronic Periodontitis Association
Table 1
The demographic and clinical data of the studied individuals.
| Subjects | Number | Age range (years) | Sex ratio (M : F) |
| Control | 21 | 35–58 | 7 : 14 | Chronic periodontitis (CP) | 14 | 39–68 | 6 : 8 | Associations Rheumatoid arthritis-chronic periodontitis (RA-CP) | 12 | 38–62 | 3 : 9 | Rheumatoid arthritis (RA) | 16 | 38–69 | 4 : 12 |
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