Table 1 Characteristics of the sample

Age

10.1 (0.5) [9, 11]

15.2 (0.4) [15, 16]

Sex (female/male/non-binary)

21/21/–

6/17/1

Educational status of parents

 UED^a

36

15

 No UED

6

8

 Unknown

–

1

Dental status

 Permanent teeth

16 (4.7) [10, 25]

27.9 (0.5) [26, 29]

 Deciduous teeth^b (0/1–5/6–10/11–13 teeth)

7/9/11/15

22/2/–/–

 Erupting teeth (0/1–3/4–5 teeth)

27/13/2

N/A

 Mobile teeth (0/1–3/4–5 teeth)

36/6/–

N/A

 dmf-t/DMF-T (0/1–2/3–6/7–12)

21/14/5/2

8/8/5/3

 Decayed teeth (0/1–2/3–4/5–8 teeth)

28/11/3/–

19/4/1/–

 Filled teeth (0/1–2/3–4/5–8 teeth)

29/8/3/2

9/8/4/3

Papillary bleeding^c

 Mean overall score

  Total

0.8 (0.4) [0.1, 1.8]

0.9 (0.5) [0.1, 1.9]

  Inner surfaces

0.9 (0.5) [0.2, 2.0]

1.0 (0.5) [0.2, 1.9]

  Outer surfaces

0.7 (0.5) [0.0, 1.9]

0.7 (0.6) [0.0, 2.0]

 Mean percentage of sides bleeding

  Total

50.5 (21.5) [6.3, 94.0]

49.9 (23.4) [8.9, 94.6]

  Inner surfaces

54.8 (22.4) [12.5, 92.0]

58.6 (23.0) [14.3, 100]

  Outer surfaces

46.2 (25.5) [0.0, 96.0]

41.1 (27.9) [3.6, 89.3]