Table 1 Participants demographic and clinical characteristics

Age of participants, months (mean ± SD)

63.70 ± 8.32

63.25 ± 8.32

Sex

 Male

8 (40%)

11(55%)

 Female

12(60%)

9(45%)

Birth order

 First child

8 (40%)

11 (55%)

 Second child

8 (40%)

5 (25%)

 Third child

3 (15%)

2 (10%)

 Forth child

1 (5%)

2(10%)

Father’s education level (based on ISCED 2011 [26])

 Post-secondary non-tertiary education and other lower educational levels (ISCED 4 and lower levels)

1 (5%)

6 (30%)

 Short-cycle tertiary education (ISCED 5)

2 (10%)

13 (65%)

 Bachelor or equivalent (ISCED 6)

11 (55%)

0 (0.0%)

 Master or equivalent (ISCED 7)

6 (30%)

1 (5%)

Mother’s education level (based on ISCED 2011 [26])

 Post-secondary non-tertiary education and other lower educational levels (ISCED 4 and lower levels)

0 (5%)

4 (30%)

 Short-cycle tertiary education (ISCED 5)

5 (10%)

15 (65%)

 Bachelor or equivalent (ISCED 6)

2 (55%)

0 (0.0%)

 Master or equivalent (ISCED 7)

13 (30%)

1 (5%)

Father’s age, years (mean ± SD)

35.10 ± 4.75

38.50 ± 4.74

Mother’s age, years (mean ± SD)

32.70 ± 3.93

33.75 ± 5.02

Diseases of parents

 Diabetes

1 (5%)

2 (10%)

 Rheumatism

1 (5%)

1 (5%)

 Cardiovascular diseases

0 (0%)

1 (5%)

Dental visits regularly (at least every 6 months)

 Yes

17 (85%)

5 (25%)

 No

3 (15%)

15 (75%)

Toothbrush

 Yes

19 (95%)

14 (70%)

 No

1 (5%)

6 (30%)

Mouthwash

 Yes

7 (35%)

2 (10%)

 No

13 (65%)

18 (90%)

Flossing

 Yes

13 (65%)

3 (15%)

 No

7 (35%)

17 (85%)

Using fluoride toothpaste

 Yes

18 (90%)

10 (50%)

 No

1 (5%)

4 (20%)

Parental smoking daily

 Yes

6 (30%)

3 (15%)

 No

14 (70%)

17 (85%)