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Observational Study
©The Author(s) 2026.
World J Clin Cases. Feb 26, 2026; 14(6): 118460
Published online Feb 26, 2026. doi: 10.12998/wjcc.v14.i6.118460
Table 1 Number of subjects and salivary thioredoxin-1 concentration in each periodontal stage, n (%)

Total (n = 144)
Salivary TRX-1 (ng/mL) median (P25%-75%)
P value
< 0.001
Periodontal health86 (59.7)55.6 (30.4-67.6)
Periodontitis stage I16 (11.1)37.1 (27.8-54.8)
Periodontitis stage II23 (16.0)29.7 (26.2-33.6)
Periodontitis stage III13 (9.0)26.0 (22.6-31.2)
Periodontitis stage IV6 (4.2)23.2 (18.4-26.5)


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