Plaque Index (PI) | PI (T0) | PI (T1) | PI (T2) | T0 versus T1 | T0 versus T2 | T1 versus T2 |
---|---|---|---|---|---|---|
Self-ligating brackets group | 0 | 23 | 28 | W= 153.06 P=0.001 | W= 97.53 P=0.001 | NS |
Conventional brackets group | 0 | 33 | 37 ** | W= 133.06 P=0.001 | W= 178.0 P=0.001 | NS |
Control group | 0 | 14 ** | 27 | W= 127.88 P=0.001 | W= 188.0 P=0.001 | NS |
Buffering capacity (indicated as the more frequent nominal value for each group) | Self-ligating group VERSUS Control group | Conventional group VERSUS Control group | Self-ligating group VERSUS Cnventional group | |||
Self-ligating brackets group | 3 (middle boffering capacity) | NS | ||||
Conventional brackets group | 4 (middle-high capacity) | NS | ||||
Control group | 3 (middle capacity) | NS | ||||
Salivary Flow (T0) | Salivary Flow (T1) | Salivary Flow (T2) | T0 versus T1 | T0 versus T2 | T1 versus T2 | |
Self-ligating brackets group | 59 | 69 | 69 | W= 10.7 P=0.05 | W= 97.53 P=0.001 | NS |
Conventional brackets group | 51 | 59 | 59 | NS | NS | NS |
Control group | 50 | 50 ** | 50 * | NS | NS | NS |
% of subjects with abnormal value (>10 5 ) T0 | % of subjects with abnormal value (>10 5 ) T1 | % of subjects with abnormal value (>10 5 ) T2 | T0 versus T1 | T0 versus T2 | T1 versus T2 | |
Self-ligating brackets group | 0% | 25% | 45% | NS | Chi-square= 10.17 P= 0.01 | NS |
Conventional brackets group | 0% | 60% ** | 20% ** | Chi-square = 97.53 P=0.001 | Chi-square= 24.47 P= 0.001 | Chi-square= 88.6 P=0.001 |
Control group | 0% | 5% | 35% | NS | Chi-square= 10.75 p=0.001 | Chi-square= 14.25 P=0.01 |
% of subjects with abnormal value (>10 5 ) T0 | % of subjects with abnormal value (>10 5 ) T1 | % of subjects with abnormal value (>10 5 ) T2 | T0 versus T1 | T0 versus T2 | T1 versus T2 | |
Self-ligating brackets group | 0% | 10% | 25% | Chi-square=5 P=0.03 | Chi-square=4.27 P=0.04 | Chi-square=27.22 P=0.001 |
Conventional brackets group | 0% | 50% | 70% | Chi-square=35.5 P=0.001 | Chi-square=80 P=0.001 | NS |
Control group | 0% | 10% | 30% | NS | Chi-square=8.8 P=0.001 | Chi-square=8.8 P=0.001 |