Table 1.
Clinical characteristics of the participants at baseline
| Control group (n = 33) | Water-flossing group (n = 30) | p value | |
|---|---|---|---|
| Age (years) | 34.20 ± 11.99 | 31.05 ± 10.00 | 0.265 |
| Gender (M/F) | 11/22 | 14/16 | 0.313 |
| Ethnicity (Han/other) | 33/0 | 29/1 | 0.476 |
| BMI (kg/m2) | 22.82 ± 3.35 | 22.60 ± 3.74 | 0.798 |
| No. of teeth | 28.85 ± 1.97 | 28.63 ± 1.63 | 0.629 |
| Past medical history (no/yes) | 30/3 | 24/6 | 0.289 |
| Gingival sulcus depth | 1.51 ± 0.27 | 1.41 ± 0.22 | 0.115 |
| Gingival index | 1.26 ± 0.17 | 1.23 ± 0.16 | 0.493 |
| Sulcus bleeding index | 1.70 ± 0.44 | 1.63 ± 0.41 | 0.554 |
| Bleeding on probing (%) | 48.23 ± 23.91 | 43.61 ± 21.85 | 0.428 |
| Dental plaque index | 2.46 ± 0.61 | 2.60 ± 0.51 | 0.335 |
| Oral malodor values | 177.14 ± 96.10 | 201.65 ± 119.40 | 0.371 |
Continuous variables are presented as mean ± standard deviation. Categorical variables are presented as natural frequencies
M male, F female, BMI body mass index