Table 2.
Comparison of median percentage values between initial and follow-up stages in both study groups
| Study group and outcome variables | Stage – Mean % (Sd.,) | Median% difference | p-value* | ||
|---|---|---|---|---|---|
| Initial | Follow-up | ||||
| Interdental floss group | 16.13 | ||||
| 23.57 | |||||
| Plaque Index | 37.50(18.3) | 21.37(19.6) | 0.010 | ||
| 44.40(44.6) | 20.83(30.9) | 0.002 | |||
| Gingival Bleeding Index | |||||
| 10 (83.3) | 11 (91.7) | -- | |||
| Gingival index grades | 2 (16.7) | 1 (8.3) | -- | ||
| 2 | |||||
| 3 | |||||
| Water jet flossing group | |||||
| Plaque index | 36.45(40.0) | 14.58(11.5) 15.62(13.5) | 21.87 | < 0.0001 | |
| 47.91(47.7) | 15.62(13.5) | 32.29 | |||
| Gingival Bleeding index | < 0.0001 | ||||
| 17 (94.4) | 18 (100) | -- | |||
| Gingival index grades | 1 (5.6) | -- | -- | -- | |
| 2 | -- | -- | |||
| 3 | -- | ||||
* By using Wilcoxon Signed Rank test