Table 3 Assessment of risk factors related to the oral health status of the participants, including DMFT, bleeding, and periodontal (only adult participants) indexes (Medians; interquartile range).

From: Risk factors for the presence of dental black plaque

Oral Health Status Control Black stain P value
DMFT index 5; 9 7; 8 0.298
Bleeding index 4.3; 5.5 3.4; 6.1 0.574
Periodontal index 16.8; 1.2 16.8; 1.0 0.416